sources/ldap: add support for cert based auth (#5850)

* ldap: support cert based auth Signed-off-by: Jens Langhammer <jens@goauthentik.io> * ldap: default sni switch to off * ldap: `get_info=NONE` on insufficient access error * fix: Make file locale script * ldap: add google ldap attribute mappings * ldap: move google secure ldap blueprint to examples Revert "ldap: add google ldap attribute mappings" This reverts commit 8a861bb92c1bd763b6e7ec0513f73b3039a1adb4. * ldap: remove `validate` for client cert auth not strictly necessary * ldap: write temp cert files more securely * ldap: use first array value for sni when provided csv input * don't specify tempdir we set $TMPDIR in the dockerfile Signed-off-by: Jens Langhammer <jens@goauthentik.io> * limit API to only allow certificate key pairs with private key Signed-off-by: Jens Langhammer <jens@goauthentik.io> * use maxsplit Signed-off-by: Jens Langhammer <jens@goauthentik.io> * update locale Signed-off-by: Jens Langhammer <jens@goauthentik.io> --------- Signed-off-by: Jens Langhammer <jens@goauthentik.io> Signed-off-by: Jens L. <jens@goauthentik.io> Co-authored-by: Jens Langhammer <jens@goauthentik.io>
2023-06-12 09:41:44 -04:00 · 2023-06-12 09:41:44 -04:00 · 029395d08b
parent 8ddefb213f
commit 029395d08b
19 changed files with 680 additions and 121 deletions
--- a/2
+++ b/2
@ -151,7 +151,7 @@ web-check-compile:
 	cd web && npm run tsc

 web-i18n-extract:
-	cd web && npm run extract
+	cd web && npm run extract-locales

 #########################
 ## Website
--- a/authentik/sources/ldap/api.py
+++ b/authentik/sources/ldap/api.py
@ -8,6 +8,7 @@ from drf_spectacular.utils import extend_schema, extend_schema_field, inline_ser
 from rest_framework.decorators import action
 from rest_framework.exceptions import ValidationError
 from rest_framework.fields import DictField, ListField
+from rest_framework.relations import PrimaryKeyRelatedField
 from rest_framework.request import Request
 from rest_framework.response import Response
 from rest_framework.viewsets import ModelViewSet
@ -16,6 +17,7 @@ from authentik.admin.api.tasks import TaskSerializer
 from authentik.core.api.propertymappings import PropertyMappingSerializer
 from authentik.core.api.sources import SourceSerializer
 from authentik.core.api.used_by import UsedByMixin
+from authentik.crypto.models import CertificateKeyPair
 from authentik.events.monitored_tasks import TaskInfo
 from authentik.sources.ldap.models import LDAPPropertyMapping, LDAPSource
 from authentik.sources.ldap.tasks import SYNC_CLASSES
@ -24,6 +26,15 @@ from authentik.sources.ldap.tasks import SYNC_CLASSES
 class LDAPSourceSerializer(SourceSerializer):
    """LDAP Source Serializer"""

+    client_certificate = PrimaryKeyRelatedField(
+        allow_null=True,
+        help_text="Client certificate to authenticate against the LDAP Server's Certificate.",
+        queryset=CertificateKeyPair.objects.exclude(
+            key_data__exact="",
+        ),
+        required=False,
+    )
+
    def validate(self, attrs: dict[str, Any]) -> dict[str, Any]:
        """Check that only a single source has password_sync on"""
        sync_users_password = attrs.get("sync_users_password", True)
@ -42,9 +53,11 @@ class LDAPSourceSerializer(SourceSerializer):
        fields = SourceSerializer.Meta.fields + [
            "server_uri",
            "peer_certificate",
+            "client_certificate",
            "bind_cn",
            "bind_password",
            "start_tls",
+            "sni",
            "base_dn",
            "additional_user_dn",
            "additional_group_dn",
@ -75,7 +88,9 @@ class LDAPSourceViewSet(UsedByMixin, ModelViewSet):
        "server_uri",
        "bind_cn",
        "peer_certificate",
+        "client_certificate",
        "start_tls",
+        "sni",
        "base_dn",
        "additional_user_dn",
        "additional_group_dn",
--- a/authentik/sources/ldap/migrations/0003_ldapsource_client_certificate_ldapsource_sni_and_more.py
+++ b/authentik/sources/ldap/migrations/0003_ldapsource_client_certificate_ldapsource_sni_and_more.py
@ -0,0 +1,45 @@
+# Generated by Django 4.1.7 on 2023-06-06 18:33
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("authentik_crypto", "0004_alter_certificatekeypair_name"),
+        ("authentik_sources_ldap", "0002_auto_20211203_0900"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="ldapsource",
+            name="client_certificate",
+            field=models.ForeignKey(
+                default=None,
+                help_text="Client certificate to authenticate against the LDAP Server's Certificate.",
+                null=True,
+                on_delete=django.db.models.deletion.SET_DEFAULT,
+                related_name="ldap_client_certificates",
+                to="authentik_crypto.certificatekeypair",
+            ),
+        ),
+        migrations.AddField(
+            model_name="ldapsource",
+            name="sni",
+            field=models.BooleanField(
+                default=False, verbose_name="Use Server URI for SNI verification"
+            ),
+        ),
+        migrations.AlterField(
+            model_name="ldapsource",
+            name="peer_certificate",
+            field=models.ForeignKey(
+                default=None,
+                help_text="Optionally verify the LDAP Server's Certificate against the CA Chain in this keypair.",
+                null=True,
+                on_delete=django.db.models.deletion.SET_DEFAULT,
+                related_name="ldap_peer_certificates",
+                to="authentik_crypto.certificatekeypair",
+            ),
+        ),
+    ]
--- a/authentik/sources/ldap/models.py
+++ b/authentik/sources/ldap/models.py
@ -1,11 +1,13 @@
 """authentik LDAP Models"""
+from os import chmod
 from ssl import CERT_REQUIRED
+from tempfile import NamedTemporaryFile, mkdtemp
 from typing import Optional

 from django.db import models
 from django.utils.translation import gettext_lazy as _
 from ldap3 import ALL, NONE, RANDOM, Connection, Server, ServerPool, Tls
-from ldap3.core.exceptions import LDAPSchemaError
+from ldap3.core.exceptions import LDAPInsufficientAccessRightsResult, LDAPSchemaError
 from rest_framework.serializers import Serializer

 from authentik.core.models import Group, PropertyMapping, Source
@ -39,14 +41,24 @@ class LDAPSource(Source):
        on_delete=models.SET_DEFAULT,
        default=None,
        null=True,
+        related_name="ldap_peer_certificates",
        help_text=_(
            "Optionally verify the LDAP Server's Certificate against the CA Chain in this keypair."
        ),
    )
+    client_certificate = models.ForeignKey(
+        CertificateKeyPair,
+        on_delete=models.SET_DEFAULT,
+        default=None,
+        null=True,
+        related_name="ldap_client_certificates",
+        help_text=_("Client certificate to authenticate against the LDAP Server's Certificate."),
+    )

    bind_cn = models.TextField(verbose_name=_("Bind CN"), blank=True)
    bind_password = models.TextField(blank=True)
    start_tls = models.BooleanField(default=False, verbose_name=_("Enable Start TLS"))
+    sni = models.BooleanField(default=False, verbose_name=_("Use Server URI for SNI verification"))

    base_dn = models.TextField(verbose_name=_("Base DN"))
    additional_user_dn = models.TextField(
@ -112,8 +124,22 @@ class LDAPSource(Source):
        if self.peer_certificate:
            tls_kwargs["ca_certs_data"] = self.peer_certificate.certificate_data
            tls_kwargs["validate"] = CERT_REQUIRED
+        if self.client_certificate:
+            temp_dir = mkdtemp()
+            with NamedTemporaryFile(mode="w", delete=False, dir=temp_dir) as temp_cert:
+                temp_cert.write(self.client_certificate.certificate_data)
+                certificate_file = temp_cert.name
+                chmod(certificate_file, 0o600)
+            with NamedTemporaryFile(mode="w", delete=False, dir=temp_dir) as temp_key:
+                temp_key.write(self.client_certificate.key_data)
+                private_key_file = temp_key.name
+                chmod(private_key_file, 0o600)
+            tls_kwargs["local_private_key_file"] = private_key_file
+            tls_kwargs["local_certificate_file"] = certificate_file
        if ciphers := CONFIG.y("ldap.tls.ciphers", None):
            tls_kwargs["ciphers"] = ciphers.strip()
+        if self.sni:
+            tls_kwargs["sni"] = self.server_uri.split(",", maxsplit=1)[0].strip()
        server_kwargs = {
            "get_info": ALL,
            "connect_timeout": LDAP_TIMEOUT,
@ -133,7 +159,9 @@ class LDAPSource(Source):
        """Get a fully connected and bound LDAP Connection"""
        server_kwargs = server_kwargs or {}
        connection_kwargs = connection_kwargs or {}
+        if self.bind_cn is not None:
            connection_kwargs.setdefault("user", self.bind_cn)
+        if self.bind_password is not None:
            connection_kwargs.setdefault("password", self.bind_password)
        connection = Connection(
            self.server(**server_kwargs),
@ -148,9 +176,10 @@ class LDAPSource(Source):
            successful = connection.bind()
            if successful:
                return connection
-        except LDAPSchemaError as exc:
+        except (LDAPSchemaError, LDAPInsufficientAccessRightsResult) as exc:
            # Schema error, so try connecting without schema info
            # See https://github.com/goauthentik/authentik/issues/4590
+            # See also https://github.com/goauthentik/authentik/issues/3399
            if server_kwargs.get("get_info", ALL) == NONE:
                raise exc
            server_kwargs["get_info"] = NONE
--- a/blueprints/example/sources-google-ldap-mappings.yaml
+++ b/blueprints/example/sources-google-ldap-mappings.yaml
@ -0,0 +1,222 @@
+version: 1
+metadata:
+  labels:
+    blueprints.goauthentik.io/instantiate: "false"
+  name: Example - Google Secure LDAP mappings
+entries:
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-uid
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: uid"
+      object_field: "username"
+      expression: |
+        return ldap.get('uid')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-googleuid
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: googleUid"
+      object_field: "attributes.googleUid"
+      expression: |
+        return ldap.get('googleUid')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-posixuid
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: posixUid"
+      object_field: "attributes.posixUid"
+      expression: |
+        return ldap.get('posixUid')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-cn
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: cn"
+      object_field: "name"
+      expression: |
+        return ldap.get('cn')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-sn
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: sn"
+      object_field: "attributes.sn"
+      expression: |
+        return list_flatten(ldap.get('sn'))
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-givenname
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: givenName"
+      object_field: "attributes.givenName"
+      expression: |
+        return list_flatten(ldap.get('givenName'))
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-displayname
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: displayName"
+      object_field: "attributes.displayName"
+      expression: |
+        return ldap.get('displayName')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-mail
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: mail"
+      object_field: "email"
+      expression: |
+        return ldap.get('mail')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-memberof
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: memberOf"
+      object_field: "attributes.memberOf"
+      expression: |
+        return ldap.get('memberOf')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-title
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: title"
+      object_field: "attributes.title"
+      expression: |
+        return ldap.get('title')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-employeenumber
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: employeeNumber"
+      object_field: "attributes.employeeNumber"
+      expression: |
+        return ldap.get('employeeNumber')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-employeetype
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: employeeType"
+      object_field: "attributes.employeeType"
+      expression: |
+        return ldap.get('employeeType')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-departmentnumber
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: departmentNumber"
+      object_field: "attributes.departmentNumber"
+      expression: |
+        return ldap.get('departmentNumber')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-physicaldeliveryofficename
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: physicalDeliveryOfficeName"
+      object_field: "attributes.physicalDeliveryOfficeName"
+      expression: |
+        return ldap.get('physicalDeliveryOfficeName')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-jpegphoto
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: jpegPhoto"
+      object_field: "attributes.jpegPhoto"
+      expression: |
+        return ldap.get('jpegPhoto')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-entryuuid
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: entryUuid"
+      object_field: "attributes.entryUuid"
+      expression: |
+        return ldap.get('entryUuid')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-objectsid
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: objectSid"
+      object_field: "attributes.objectSid"
+      expression: |
+        return ldap.get('objectSid')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-uidnumber
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: uidNumber"
+      object_field: "attributes.uidNumber"
+      expression: |
+        return ldap.get('uidNumber')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-gidnumber
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: gidNumber"
+      object_field: "attributes.gidNumber"
+      expression: |
+        return ldap.get('gidNumber')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-homedirectory
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: homeDirectory"
+      object_field: "attributes.homeDirectory"
+      expression: |
+        return ldap.get('homeDirectory')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-loginshell
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: loginShell"
+      object_field: "attributes.loginShell"
+      expression: |
+        return ldap.get('loginShell')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-gidnumber
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: gidNumber"
+      object_field: "attributes.gidNumber"
+      expression: |
+        return ldap.get('gidNumber')
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-sshpublickey
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: sshPublicKey"
+      object_field: "attributes.sshPublicKey"
+      expression: |
+        return list_flatten(ldap.get('sshPublicKey'))
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-description
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: description"
+      object_field: "attributes.description"
+      expression: |
+        return list_flatten(ldap.get('description'))
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-member
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: member"
+      object_field: "attributes.member"
+      expression: |
+        return list_flatten(ldap.get('member'))
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-memberuid
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: memberUid"
+      object_field: "attributes.memberUid"
+      expression: |
+        return list_flatten(ldap.get('memberUid'))
+  - identifiers:
+      managed: goauthentik.io/sources/ldap/google-googleadmincreated
+    model: authentik_sources_ldap.ldappropertymapping
+    attrs:
+      name: "Google Secure LDAP Mapping: googleAdminCreated"
+      object_field: "attributes.googleAdminCreated"
+      expression: |
+        return list_flatten(ldap.get('googleAdminCreated'))
--- a/blueprints/schema.json
+++ b/blueprints/schema.json
@ -4732,6 +4732,11 @@
                    "title": "Peer certificate",
                    "description": "Optionally verify the LDAP Server's Certificate against the CA Chain in this keypair."
                },
+                "client_certificate": {
+                    "type": "integer",
+                    "title": "Client certificate",
+                    "description": "Client certificate to authenticate against the LDAP Server's Certificate."
+                },
                "bind_cn": {
                    "type": "string",
                    "title": "Bind CN"
@ -4744,6 +4749,10 @@
                    "type": "boolean",
                    "title": "Enable Start TLS"
                },
+                "sni": {
+                    "type": "boolean",
+                    "title": "Use Server URI for SNI verification"
+                },
                "base_dn": {
                    "type": "string",
                    "minLength": 1,
--- a/locale/en/LC_MESSAGES/django.po
+++ b/locale/en/LC_MESSAGES/django.po
@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-05-21 21:59+0000\n"
+"POT-Creation-Date: 2023-06-12 12:11+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@ -31,16 +31,16 @@ msgstr ""
 msgid "Validation Error"
 msgstr ""

-#: authentik/blueprints/api.py:43
+#: authentik/blueprints/api.py:44
 msgid "Blueprint file does not exist"
 msgstr ""

-#: authentik/blueprints/api.py:54
+#: authentik/blueprints/api.py:55
 #, python-format
 msgid "Failed to validate blueprint: %(logs)s"
 msgstr ""

-#: authentik/blueprints/api.py:59
+#: authentik/blueprints/api.py:60
 msgid "Either path or content must be set."
 msgstr ""

@ -69,24 +69,24 @@ msgstr ""
 msgid "authentik Export - %(date)s"
 msgstr ""

-#: authentik/blueprints/v1/tasks.py:149 authentik/crypto/tasks.py:93
+#: authentik/blueprints/v1/tasks.py:150 authentik/crypto/tasks.py:93
 #, python-format
 msgid "Successfully imported %(count)d files."
 msgstr ""

-#: authentik/core/api/providers.py:113
+#: authentik/core/api/providers.py:120
 msgid "SAML Provider from Metadata"
 msgstr ""

-#: authentik/core/api/providers.py:114
+#: authentik/core/api/providers.py:121
 msgid "Create a SAML Provider by importing its Metadata."
 msgstr ""

-#: authentik/core/api/users.py:118
+#: authentik/core/api/users.py:143
 msgid "No leading or trailing slashes allowed."
 msgstr ""

-#: authentik/core/api/users.py:121
+#: authentik/core/api/users.py:146
 msgid "No empty segments in user path allowed."
 msgstr ""

@ -1365,7 +1365,7 @@ msgstr ""
 msgid "Authentication token"
 msgstr ""

-#: authentik/providers/scim/models.py:33 authentik/sources/ldap/models.py:82
+#: authentik/providers/scim/models.py:33 authentik/sources/ldap/models.py:94
 msgid "Property mappings used for group creation/updating."
 msgstr ""

@ -1426,79 +1426,88 @@ msgstr ""
 msgid "Used recovery-link to authenticate."
 msgstr ""

-#: authentik/sources/ldap/models.py:35
+#: authentik/sources/ldap/models.py:37
 msgid "Server URI"
 msgstr ""

-#: authentik/sources/ldap/models.py:43
+#: authentik/sources/ldap/models.py:46
 msgid ""
 "Optionally verify the LDAP Server's Certificate against the CA Chain in this "
 "keypair."
 msgstr ""

-#: authentik/sources/ldap/models.py:47
-msgid "Bind CN"
-msgstr ""
-
-#: authentik/sources/ldap/models.py:49
-msgid "Enable Start TLS"
-msgstr ""
-
-#: authentik/sources/ldap/models.py:51
-msgid "Base DN"
-msgstr ""
-
-#: authentik/sources/ldap/models.py:53
-msgid "Prepended to Base DN for User-queries."
-msgstr ""
-
-#: authentik/sources/ldap/models.py:54
-msgid "Addition User DN"
+#: authentik/sources/ldap/models.py:55
+msgid ""
+"Client certificate to authenticate against the LDAP Server's Certificate."
 msgstr ""

 #: authentik/sources/ldap/models.py:58
-msgid "Prepended to Base DN for Group-queries."
+msgid "Bind CN"
 msgstr ""

-#: authentik/sources/ldap/models.py:59
-msgid "Addition Group DN"
+#: authentik/sources/ldap/models.py:60
+msgid "Enable Start TLS"
+msgstr ""
+
+#: authentik/sources/ldap/models.py:61
+msgid "Use Server URI for SNI verification"
+msgstr ""
+
+#: authentik/sources/ldap/models.py:63
+msgid "Base DN"
 msgstr ""

 #: authentik/sources/ldap/models.py:65
+msgid "Prepended to Base DN for User-queries."
+msgstr ""
+
+#: authentik/sources/ldap/models.py:66
+msgid "Addition User DN"
+msgstr ""
+
+#: authentik/sources/ldap/models.py:70
+msgid "Prepended to Base DN for Group-queries."
+msgstr ""
+
+#: authentik/sources/ldap/models.py:71
+msgid "Addition Group DN"
+msgstr ""
+
+#: authentik/sources/ldap/models.py:77
 msgid "Consider Objects matching this filter to be Users."
 msgstr ""

-#: authentik/sources/ldap/models.py:68
+#: authentik/sources/ldap/models.py:80
 msgid "Field which contains members of a group."
 msgstr ""

-#: authentik/sources/ldap/models.py:72
+#: authentik/sources/ldap/models.py:84
 msgid "Consider Objects matching this filter to be Groups."
 msgstr ""

-#: authentik/sources/ldap/models.py:75
+#: authentik/sources/ldap/models.py:87
 msgid "Field which contains a unique Identifier."
 msgstr ""

-#: authentik/sources/ldap/models.py:89
+#: authentik/sources/ldap/models.py:101
 msgid ""
 "When a user changes their password, sync it back to LDAP. This can only be "
 "enabled on a single LDAP source."
 msgstr ""

-#: authentik/sources/ldap/models.py:159
+#: authentik/sources/ldap/models.py:188
 msgid "LDAP Source"
 msgstr ""

-#: authentik/sources/ldap/models.py:160
+#: authentik/sources/ldap/models.py:189
 msgid "LDAP Sources"
 msgstr ""

-#: authentik/sources/ldap/models.py:182
+#: authentik/sources/ldap/models.py:211
 msgid "LDAP Property Mapping"
 msgstr ""

-#: authentik/sources/ldap/models.py:183
+#: authentik/sources/ldap/models.py:212
 msgid "LDAP Property Mappings"
 msgstr ""

--- a/schema.yml
+++ b/schema.yml
@ -17096,6 +17096,11 @@ paths:
        name: bind_cn
        schema:
          type: string
+      - in: query
+        name: client_certificate
+        schema:
+          type: string
+          format: uuid
      - in: query
        name: enabled
        schema:
@ -17171,6 +17176,10 @@ paths:
        name: slug
        schema:
          type: string
+      - in: query
+        name: sni
+        schema:
+          type: boolean
      - in: query
        name: start_tls
        schema:
@ -30950,11 +30959,20 @@ components:
          nullable: true
          description: Optionally verify the LDAP Server's Certificate against the
            CA Chain in this keypair.
+        client_certificate:
+          type: string
+          format: uuid
+          nullable: true
+          description: Client certificate to authenticate against the LDAP Server's
+            Certificate.
        bind_cn:
          type: string
        start_tls:
          type: boolean
          title: Enable Start TLS
+        sni:
+          type: boolean
+          title: Use Server URI for SNI verification
        base_dn:
          type: string
        additional_user_dn:
@ -31064,6 +31082,12 @@ components:
          nullable: true
          description: Optionally verify the LDAP Server's Certificate against the
            CA Chain in this keypair.
+        client_certificate:
+          type: string
+          format: uuid
+          nullable: true
+          description: Client certificate to authenticate against the LDAP Server's
+            Certificate.
        bind_cn:
          type: string
        bind_password:
@ -31072,6 +31096,9 @@ components:
        start_tls:
          type: boolean
          title: Enable Start TLS
+        sni:
+          type: boolean
+          title: Use Server URI for SNI verification
        base_dn:
          type: string
          minLength: 1
@ -36356,6 +36383,12 @@ components:
          nullable: true
          description: Optionally verify the LDAP Server's Certificate against the
            CA Chain in this keypair.
+        client_certificate:
+          type: string
+          format: uuid
+          nullable: true
+          description: Client certificate to authenticate against the LDAP Server's
+            Certificate.
        bind_cn:
          type: string
        bind_password:
@ -36364,6 +36397,9 @@ components:
        start_tls:
          type: boolean
          title: Enable Start TLS
+        sni:
+          type: boolean
+          title: Use Server URI for SNI verification
        base_dn:
          type: string
          minLength: 1
--- a/web/src/admin/sources/ldap/LDAPSourceForm.ts
+++ b/web/src/admin/sources/ldap/LDAPSourceForm.ts
@ -184,6 +184,26 @@ export class LDAPSourceForm extends ModelForm<LDAPSource, string> {
                            ${msg("To use SSL instead, use 'ldaps://' and disable this option.")}
                        </p>
                    </ak-form-element-horizontal>
+                    <ak-form-element-horizontal name="sni">
+                        <label class="pf-c-switch">
+                            <input
+                                class="pf-c-switch__input"
+                                type="checkbox"
+                                ?checked=${first(this.instance?.sni, false)}
+                            />
+                            <span class="pf-c-switch__toggle">
+                                <span class="pf-c-switch__toggle-icon">
+                                    <i class="fas fa-check" aria-hidden="true"></i>
+                                </span>
+                            </span>
+                            <span class="pf-c-switch__label"
+                                >${msg("Use Server URI for SNI verification")}</span
+                            >
+                        </label>
+                        <p class="pf-c-form__helper-text">
+                            ${msg("Required for servers using TLS 1.3+")}
+                        </p>
+                    </ak-form-element-horizontal>
                    <ak-form-element-horizontal
                        label=${msg("TLS Verification Certificate")}
                        name="peerCertificate"
@ -222,6 +242,45 @@ export class LDAPSourceForm extends ModelForm<LDAPSource, string> {
                            )}
                        </p>
                    </ak-form-element-horizontal>
+                    <ak-form-element-horizontal
+                        label=${msg("TLS Client authentication certificate")}
+                        name="clientCertificate"
+                    >
+                        <ak-search-select
+                            .fetchObjects=${async (
+                                query?: string,
+                            ): Promise<CertificateKeyPair[]> => {
+                                const args: CryptoCertificatekeypairsListRequest = {
+                                    ordering: "name",
+                                    hasKey: true,
+                                    includeDetails: false,
+                                };
+                                if (query !== undefined) {
+                                    args.search = query;
+                                }
+                                const certificates = await new CryptoApi(
+                                    DEFAULT_CONFIG,
+                                ).cryptoCertificatekeypairsList(args);
+                                return certificates.results;
+                            }}
+                            .renderElement=${(item: CertificateKeyPair): string => {
+                                return item.name;
+                            }}
+                            .value=${(item: CertificateKeyPair | undefined): string | undefined => {
+                                return item?.pk;
+                            }}
+                            .selected=${(item: CertificateKeyPair): boolean => {
+                                return item.pk === this.instance?.clientCertificate;
+                            }}
+                            ?blankable=${true}
+                        >
+                        </ak-search-select>
+                        <p class="pf-c-form__helper-text">
+                            ${msg(
+                                "Client certificate keypair to authenticate against the LDAP Server's Certificate.",
+                            )}
+                        </p>
+                    </ak-form-element-horizontal>
                    <ak-form-element-horizontal label=${msg("Bind CN")} name="bindCn">
                        <input
                            type="text"
--- a/web/xliff/de.xlf
+++ b/web/xliff/de.xlf
@ -748,13 +748,6 @@
        <source>Certificate</source>
        <target>Zertifikat</target>
      </trans-unit>
-      <trans-unit id="s4eb524a2bb358f8b">
-        <source>Due to protocol limitations, this certificate is only used when the outpost has a single provider, or all providers use the same certificate.</source>
-      </trans-unit>
-      <trans-unit id="s73e9d580d6d96b02">
-        <source>If multiple providers share an outpost, a self-signed certificate is used.</source>
-        <target>Wenn sich mehrere Anbieter einen Außenposten teilen, wird ein selbstsigniertes Zertifikat verwendet.</target>
-      </trans-unit>
      <trans-unit id="sac43cb9690260b86">
        <source>UID start number</source>
        <target>UID-Startnummer</target>
@ -5722,6 +5715,27 @@ Bindings to groups/users are checked against the user of the event.</source>
        <source>Activate</source>
        <target>Aktivieren</target>
      </trans-unit>
+<trans-unit id="s1024166475850a65">
+  <source>Use Server URI for SNI verification</source>
+</trans-unit>
+<trans-unit id="se65beb94fffc3c4b">
+  <source>Required for servers using TLS 1.3+</source>
+</trans-unit>
+<trans-unit id="s5506b35a1bceb141">
+  <source>Client certificate keypair to authenticate against the LDAP Server's Certificate.</source>
+</trans-unit>
+<trans-unit id="s4647b2c92638d6fd">
+  <source>The certificate for the above configured Base DN. As a fallback, the provider uses a self-signed certificate.</source>
+</trans-unit>
+<trans-unit id="scd247ffad6e04ac0">
+  <source>TLS Server name</source>
+</trans-unit>
+<trans-unit id="s2acef4f6ba39bf11">
+  <source>DNS name for which the above configured certificate should be used. The certificate cannot be detected based on the base DN, as the SSL/TLS negotiation happens before such data is exchanged.</source>
+</trans-unit>
+<trans-unit id="s000ee3e634868b3c">
+  <source>TLS Client authentication certificate</source>
+</trans-unit>
    </body>
  </file>
 </xliff>
--- a/web/xliff/en.xlf
+++ b/web/xliff/en.xlf
@ -777,14 +777,6 @@
        <source>Certificate</source>
        <target>Certificate</target>
      </trans-unit>
-      <trans-unit id="s4eb524a2bb358f8b">
-        <source>Due to protocol limitations, this certificate is only used when the outpost has a single provider, or all providers use the same certificate.</source>
-        <target>Due to protocol limitations, this certificate is only used when the outpost has a single provider, or all providers use the same certificate.</target>
-      </trans-unit>
-      <trans-unit id="s73e9d580d6d96b02">
-        <source>If multiple providers share an outpost, a self-signed certificate is used.</source>
-        <target>If multiple providers share an outpost, a self-signed certificate is used.</target>
-      </trans-unit>
      <trans-unit id="sac43cb9690260b86">
        <source>UID start number</source>
        <target>UID start number</target>
@ -6039,6 +6031,27 @@ Bindings to groups/users are checked against the user of the event.</source>
        <source>Activate</source>
        <target>Activate</target>
      </trans-unit>
+<trans-unit id="s1024166475850a65">
+  <source>Use Server URI for SNI verification</source>
+</trans-unit>
+<trans-unit id="se65beb94fffc3c4b">
+  <source>Required for servers using TLS 1.3+</source>
+</trans-unit>
+<trans-unit id="s5506b35a1bceb141">
+  <source>Client certificate keypair to authenticate against the LDAP Server's Certificate.</source>
+</trans-unit>
+<trans-unit id="s4647b2c92638d6fd">
+  <source>The certificate for the above configured Base DN. As a fallback, the provider uses a self-signed certificate.</source>
+</trans-unit>
+<trans-unit id="scd247ffad6e04ac0">
+  <source>TLS Server name</source>
+</trans-unit>
+<trans-unit id="s2acef4f6ba39bf11">
+  <source>DNS name for which the above configured certificate should be used. The certificate cannot be detected based on the base DN, as the SSL/TLS negotiation happens before such data is exchanged.</source>
+</trans-unit>
+<trans-unit id="s000ee3e634868b3c">
+  <source>TLS Client authentication certificate</source>
+</trans-unit>
    </body>
  </file>
 </xliff>
--- a/web/xliff/es.xlf
+++ b/web/xliff/es.xlf
@ -733,13 +733,6 @@
        <source>Certificate</source>
        <target>Certificado</target>
      </trans-unit>
-      <trans-unit id="s4eb524a2bb358f8b">
-        <source>Due to protocol limitations, this certificate is only used when the outpost has a single provider, or all providers use the same certificate.</source>
-      </trans-unit>
-      <trans-unit id="s73e9d580d6d96b02">
-        <source>If multiple providers share an outpost, a self-signed certificate is used.</source>
-        <target>Si varios proveedores comparten un puesto avanzado, se utiliza un certificado autofirmado.</target>
-      </trans-unit>
      <trans-unit id="sac43cb9690260b86">
        <source>UID start number</source>
        <target>Número inicial de UID</target>
@ -5630,6 +5623,27 @@ Bindings to groups/users are checked against the user of the event.</source>
        <source>Activate</source>
        <target>Activar</target>
      </trans-unit>
+<trans-unit id="s1024166475850a65">
+  <source>Use Server URI for SNI verification</source>
+</trans-unit>
+<trans-unit id="se65beb94fffc3c4b">
+  <source>Required for servers using TLS 1.3+</source>
+</trans-unit>
+<trans-unit id="s5506b35a1bceb141">
+  <source>Client certificate keypair to authenticate against the LDAP Server's Certificate.</source>
+</trans-unit>
+<trans-unit id="s4647b2c92638d6fd">
+  <source>The certificate for the above configured Base DN. As a fallback, the provider uses a self-signed certificate.</source>
+</trans-unit>
+<trans-unit id="scd247ffad6e04ac0">
+  <source>TLS Server name</source>
+</trans-unit>
+<trans-unit id="s2acef4f6ba39bf11">
+  <source>DNS name for which the above configured certificate should be used. The certificate cannot be detected based on the base DN, as the SSL/TLS negotiation happens before such data is exchanged.</source>
+</trans-unit>
+<trans-unit id="s000ee3e634868b3c">
+  <source>TLS Client authentication certificate</source>
+</trans-unit>
    </body>
  </file>
 </xliff>
--- a/web/xliff/fr_FR.xlf
+++ b/web/xliff/fr_FR.xlf
@ -749,13 +749,6 @@
        <source>Certificate</source>
        <target>Certificat</target>
      </trans-unit>
-      <trans-unit id="s4eb524a2bb358f8b">
-        <source>Due to protocol limitations, this certificate is only used when the outpost has a single provider, or all providers use the same certificate.</source>
-      </trans-unit>
-      <trans-unit id="s73e9d580d6d96b02">
-        <source>If multiple providers share an outpost, a self-signed certificate is used.</source>
-        <target>Si plusieurs fournisseurs partagent un avant-poste, un certificat auto-signé est utilisé.</target>
-      </trans-unit>
      <trans-unit id="sac43cb9690260b86">
        <source>UID start number</source>
        <target>Numéro de départ d'UID</target>
@ -5737,6 +5730,27 @@ Bindings to groups/users are checked against the user of the event.</source>
        <source>Activate</source>
        <target>Activer</target>
      </trans-unit>
+<trans-unit id="s1024166475850a65">
+  <source>Use Server URI for SNI verification</source>
+</trans-unit>
+<trans-unit id="se65beb94fffc3c4b">
+  <source>Required for servers using TLS 1.3+</source>
+</trans-unit>
+<trans-unit id="s5506b35a1bceb141">
+  <source>Client certificate keypair to authenticate against the LDAP Server's Certificate.</source>
+</trans-unit>
+<trans-unit id="s4647b2c92638d6fd">
+  <source>The certificate for the above configured Base DN. As a fallback, the provider uses a self-signed certificate.</source>
+</trans-unit>
+<trans-unit id="scd247ffad6e04ac0">
+  <source>TLS Server name</source>
+</trans-unit>
+<trans-unit id="s2acef4f6ba39bf11">
+  <source>DNS name for which the above configured certificate should be used. The certificate cannot be detected based on the base DN, as the SSL/TLS negotiation happens before such data is exchanged.</source>
+</trans-unit>
+<trans-unit id="s000ee3e634868b3c">
+  <source>TLS Client authentication certificate</source>
+</trans-unit>
    </body>
  </file>
 </xliff>
--- a/web/xliff/pl.xlf
+++ b/web/xliff/pl.xlf
@ -752,13 +752,6 @@
        <source>Certificate</source>
        <target>Certyfikat</target>
      </trans-unit>
-      <trans-unit id="s4eb524a2bb358f8b">
-        <source>Due to protocol limitations, this certificate is only used when the outpost has a single provider, or all providers use the same certificate.</source>
-      </trans-unit>
-      <trans-unit id="s73e9d580d6d96b02">
-        <source>If multiple providers share an outpost, a self-signed certificate is used.</source>
-        <target>Jeśli wielu dostawców współdzieli placówkę, używany jest certyfikat z podpisem własnym.</target>
-      </trans-unit>
      <trans-unit id="sac43cb9690260b86">
        <source>UID start number</source>
        <target>Numer początkowy UID</target>
@ -5869,6 +5862,27 @@ Bindings to groups/users are checked against the user of the event.</source>
        <source>Activate</source>
        <target>Aktywuj</target>
      </trans-unit>
+<trans-unit id="s1024166475850a65">
+  <source>Use Server URI for SNI verification</source>
+</trans-unit>
+<trans-unit id="se65beb94fffc3c4b">
+  <source>Required for servers using TLS 1.3+</source>
+</trans-unit>
+<trans-unit id="s5506b35a1bceb141">
+  <source>Client certificate keypair to authenticate against the LDAP Server's Certificate.</source>
+</trans-unit>
+<trans-unit id="s4647b2c92638d6fd">
+  <source>The certificate for the above configured Base DN. As a fallback, the provider uses a self-signed certificate.</source>
+</trans-unit>
+<trans-unit id="scd247ffad6e04ac0">
+  <source>TLS Server name</source>
+</trans-unit>
+<trans-unit id="s2acef4f6ba39bf11">
+  <source>DNS name for which the above configured certificate should be used. The certificate cannot be detected based on the base DN, as the SSL/TLS negotiation happens before such data is exchanged.</source>
+</trans-unit>
+<trans-unit id="s000ee3e634868b3c">
+  <source>TLS Client authentication certificate</source>
+</trans-unit>
    </body>
  </file>
 </xliff>
--- a/web/xliff/pseudo-LOCALE.xlf
+++ b/web/xliff/pseudo-LOCALE.xlf
@ -761,14 +761,6 @@
      <trans-unit id="sb157267c85fdff30">
        <source>Certificate</source>
        
-      </trans-unit>
-      <trans-unit id="s4eb524a2bb358f8b">
-        <source>Due to protocol limitations, this certificate is only used when the outpost has a single provider, or all providers use the same certificate.</source>
-        
-      </trans-unit>
-      <trans-unit id="s73e9d580d6d96b02">
-        <source>If multiple providers share an outpost, a self-signed certificate is used.</source>
-        
      </trans-unit>
      <trans-unit id="sac43cb9690260b86">
        <source>UID start number</source>
@ -5973,6 +5965,27 @@ Bindings to groups/users are checked against the user of the event.</source>
 </trans-unit>
 <trans-unit id="s27976e94b05c6970">
  <source>Activate</source>
+</trans-unit>
+<trans-unit id="s1024166475850a65">
+  <source>Use Server URI for SNI verification</source>
+</trans-unit>
+<trans-unit id="se65beb94fffc3c4b">
+  <source>Required for servers using TLS 1.3+</source>
+</trans-unit>
+<trans-unit id="s5506b35a1bceb141">
+  <source>Client certificate keypair to authenticate against the LDAP Server's Certificate.</source>
+</trans-unit>
+<trans-unit id="s4647b2c92638d6fd">
+  <source>The certificate for the above configured Base DN. As a fallback, the provider uses a self-signed certificate.</source>
+</trans-unit>
+<trans-unit id="scd247ffad6e04ac0">
+  <source>TLS Server name</source>
+</trans-unit>
+<trans-unit id="s2acef4f6ba39bf11">
+  <source>DNS name for which the above configured certificate should be used. The certificate cannot be detected based on the base DN, as the SSL/TLS negotiation happens before such data is exchanged.</source>
+</trans-unit>
+<trans-unit id="s000ee3e634868b3c">
+  <source>TLS Client authentication certificate</source>
 </trans-unit>
    </body>
  </file>
--- a/web/xliff/tr.xlf
+++ b/web/xliff/tr.xlf
@ -733,13 +733,6 @@
        <source>Certificate</source>
        <target>Sertifika</target>
      </trans-unit>
-      <trans-unit id="s4eb524a2bb358f8b">
-        <source>Due to protocol limitations, this certificate is only used when the outpost has a single provider, or all providers use the same certificate.</source>
-      </trans-unit>
-      <trans-unit id="s73e9d580d6d96b02">
-        <source>If multiple providers share an outpost, a self-signed certificate is used.</source>
-        <target>Birden çok sağlayıcı bir üssü paylaşıyorsa, otomatik olarak imzalanan bir sertifika kullanılır.</target>
-      </trans-unit>
      <trans-unit id="sac43cb9690260b86">
        <source>UID start number</source>
        <target>UID başlangıç numarası</target>
@ -5620,6 +5613,27 @@ Bindings to groups/users are checked against the user of the event.</source>
        <source>Activate</source>
        <target>Etkinleştir</target>
      </trans-unit>
+<trans-unit id="s1024166475850a65">
+  <source>Use Server URI for SNI verification</source>
+</trans-unit>
+<trans-unit id="se65beb94fffc3c4b">
+  <source>Required for servers using TLS 1.3+</source>
+</trans-unit>
+<trans-unit id="s5506b35a1bceb141">
+  <source>Client certificate keypair to authenticate against the LDAP Server's Certificate.</source>
+</trans-unit>
+<trans-unit id="s4647b2c92638d6fd">
+  <source>The certificate for the above configured Base DN. As a fallback, the provider uses a self-signed certificate.</source>
+</trans-unit>
+<trans-unit id="scd247ffad6e04ac0">
+  <source>TLS Server name</source>
+</trans-unit>
+<trans-unit id="s2acef4f6ba39bf11">
+  <source>DNS name for which the above configured certificate should be used. The certificate cannot be detected based on the base DN, as the SSL/TLS negotiation happens before such data is exchanged.</source>
+</trans-unit>
+<trans-unit id="s000ee3e634868b3c">
+  <source>TLS Client authentication certificate</source>
+</trans-unit>
    </body>
  </file>
 </xliff>
--- a/web/xliff/zh-Hans.xlf
+++ b/web/xliff/zh-Hans.xlf
@ -965,16 +965,6 @@
        <source>Certificate</source>
        <target>证书</target>
        
-      </trans-unit>
-      <trans-unit id="s4eb524a2bb358f8b">
-        <source>Due to protocol limitations, this certificate is only used when the outpost has a single provider, or all providers use the same certificate.</source>
-        <target>由于协议限制，只在前哨有单个提供程序，或所有提供程序都使用相同证书时才使用此证书。</target>
-        
-      </trans-unit>
-      <trans-unit id="s73e9d580d6d96b02">
-        <source>If multiple providers share an outpost, a self-signed certificate is used.</source>
-        <target>如果多个提供程序共享同一个前哨，则使用自签名证书。</target>
-        
      </trans-unit>
      <trans-unit id="sac43cb9690260b86">
        <source>UID start number</source>
@ -7547,6 +7537,27 @@ Bindings to groups/users are checked against the user of the event.</source>
        <target>激活</target>
        
      </trans-unit>
+<trans-unit id="s1024166475850a65">
+  <source>Use Server URI for SNI verification</source>
+</trans-unit>
+<trans-unit id="se65beb94fffc3c4b">
+  <source>Required for servers using TLS 1.3+</source>
+</trans-unit>
+<trans-unit id="s5506b35a1bceb141">
+  <source>Client certificate keypair to authenticate against the LDAP Server's Certificate.</source>
+</trans-unit>
+<trans-unit id="s4647b2c92638d6fd">
+  <source>The certificate for the above configured Base DN. As a fallback, the provider uses a self-signed certificate.</source>
+</trans-unit>
+<trans-unit id="scd247ffad6e04ac0">
+  <source>TLS Server name</source>
+</trans-unit>
+<trans-unit id="s2acef4f6ba39bf11">
+  <source>DNS name for which the above configured certificate should be used. The certificate cannot be detected based on the base DN, as the SSL/TLS negotiation happens before such data is exchanged.</source>
+</trans-unit>
+<trans-unit id="s000ee3e634868b3c">
+  <source>TLS Client authentication certificate</source>
+</trans-unit>
    </body>
  </file>
 </xliff>
--- a/web/xliff/zh-Hant.xlf
+++ b/web/xliff/zh-Hant.xlf
@ -740,13 +740,6 @@
        <source>Certificate</source>
        <target>证书</target>
      </trans-unit>
-      <trans-unit id="s4eb524a2bb358f8b">
-        <source>Due to protocol limitations, this certificate is only used when the outpost has a single provider, or all providers use the same certificate.</source>
-      </trans-unit>
-      <trans-unit id="s73e9d580d6d96b02">
-        <source>If multiple providers share an outpost, a self-signed certificate is used.</source>
-        <target>如果多个提供商共享一个 Outpost，则使用自签名证书。</target>
-      </trans-unit>
      <trans-unit id="sac43cb9690260b86">
        <source>UID start number</source>
        <target>UID 起始编号</target>
@ -5675,6 +5668,27 @@ Bindings to groups/users are checked against the user of the event.</source>
        <source>Activate</source>
        <target>启用</target>
      </trans-unit>
+<trans-unit id="s1024166475850a65">
+  <source>Use Server URI for SNI verification</source>
+</trans-unit>
+<trans-unit id="se65beb94fffc3c4b">
+  <source>Required for servers using TLS 1.3+</source>
+</trans-unit>
+<trans-unit id="s5506b35a1bceb141">
+  <source>Client certificate keypair to authenticate against the LDAP Server's Certificate.</source>
+</trans-unit>
+<trans-unit id="s4647b2c92638d6fd">
+  <source>The certificate for the above configured Base DN. As a fallback, the provider uses a self-signed certificate.</source>
+</trans-unit>
+<trans-unit id="scd247ffad6e04ac0">
+  <source>TLS Server name</source>
+</trans-unit>
+<trans-unit id="s2acef4f6ba39bf11">
+  <source>DNS name for which the above configured certificate should be used. The certificate cannot be detected based on the base DN, as the SSL/TLS negotiation happens before such data is exchanged.</source>
+</trans-unit>
+<trans-unit id="s000ee3e634868b3c">
+  <source>TLS Client authentication certificate</source>
+</trans-unit>
    </body>
  </file>
 </xliff>
--- a/web/xliff/zh_TW.xlf
+++ b/web/xliff/zh_TW.xlf
@ -740,13 +740,6 @@
        <source>Certificate</source>
        <target>证书</target>
      </trans-unit>
-      <trans-unit id="s4eb524a2bb358f8b">
-        <source>Due to protocol limitations, this certificate is only used when the outpost has a single provider, or all providers use the same certificate.</source>
-      </trans-unit>
-      <trans-unit id="s73e9d580d6d96b02">
-        <source>If multiple providers share an outpost, a self-signed certificate is used.</source>
-        <target>如果多个提供商共享一个 Outpost，则使用自签名证书。</target>
-      </trans-unit>
      <trans-unit id="sac43cb9690260b86">
        <source>UID start number</source>
        <target>UID 起始编号</target>
@ -5674,6 +5667,27 @@ Bindings to groups/users are checked against the user of the event.</source>
        <source>Activate</source>
        <target>启用</target>
      </trans-unit>
+<trans-unit id="s1024166475850a65">
+  <source>Use Server URI for SNI verification</source>
+</trans-unit>
+<trans-unit id="se65beb94fffc3c4b">
+  <source>Required for servers using TLS 1.3+</source>
+</trans-unit>
+<trans-unit id="s5506b35a1bceb141">
+  <source>Client certificate keypair to authenticate against the LDAP Server's Certificate.</source>
+</trans-unit>
+<trans-unit id="s4647b2c92638d6fd">
+  <source>The certificate for the above configured Base DN. As a fallback, the provider uses a self-signed certificate.</source>
+</trans-unit>
+<trans-unit id="scd247ffad6e04ac0">
+  <source>TLS Server name</source>
+</trans-unit>
+<trans-unit id="s2acef4f6ba39bf11">
+  <source>DNS name for which the above configured certificate should be used. The certificate cannot be detected based on the base DN, as the SSL/TLS negotiation happens before such data is exchanged.</source>
+</trans-unit>
+<trans-unit id="s000ee3e634868b3c">
+  <source>TLS Client authentication certificate</source>
+</trans-unit>
    </body>
  </file>
 </xliff>