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Changes for page KerberosAndLDAP

Last modified by Sirius Rayner-Karlsson on 2024/05/09 10:54
From version 2.1
edited by Sirius Rayner-Karlsson
on 2024/05/01 05:00
Change comment: There is no comment for this version
To version 3.1
edited by Sirius Rayner-Karlsson
on 2024/05/01 05:02
Change comment: There is no comment for this version

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2 2  
3 3  The guide I followed was [[https:~~/~~/wiki.debian.org/LDAP/OpenLDAPSetup#Kerberos>>https://wiki.debian.org/LDAP/OpenLDAPSetup#Kerberos]] which while it worked required some minor tweaks. I obtained edit privileges for the Debian Wiki and updated the guide with the fixes that I found. I however have a Synology NAS and that can run an LDAP Server. So this guide differs a little from the upstream Debian Guide.
4 4  
5 +First, install the packages containing the LDAP-enabled Kerberos servers ([[krb5-kdc-ldap>>url:https://packages.debian.org/krb5-kdc-ldap]] and [[krb5-admin-server>>url:https://packages.debian.org/krb5-admin-server]]) and the [[schema2ldif>>url:https://packages.debian.org/schema2ldif]] tool:
5 5  
7 +{{{# apt install krb5-kdc-ldap krb5-admin-server schema2ldif}}}
8 +
9 +Then load the ##kerberos## schema:
10 +
11 +
12 +{{{# zcat /usr/share/doc/krb5-kdc-ldap/kerberos.openldap.ldif.gz | ldapadd -Q -Y EXTERNAL -H ldapi:///
13 +adding new entry "cn=kerberos,cn=schema,cn=config"}}}
14 +
15 +And add an index on the ##krbPrincipalName## (improves performance and also suppresses some log messages if ##slapd## is configured to log more than default) for the database(s) where you intend to store Kerberos data:
16 +
17 +
18 +{{{# ldapmodify -Q -Y EXTERNAL -H ldapi:/// <<EOF
19 +dn: olcDatabase={1}mdb,cn=config
20 +add: olcDbIndex
21 +olcDbIndex: krbPrincipalName eq,pres,sub
22 +EOF
23 +
24 +modifying entry "olcDatabase={1}mdb,cn=config"}}}
25 +
26 +Next, you need to create and configure two entries which will be used by the Kerberos servers to connect to OpenLDAP. If you are running Kerberos and OpenLDAP on the same system, these steps are optional, but recommended. In order to keep things nicely separated, everything will be created under a separate ##organizationalUnit##. Note that a simple bind (##-x -D##) is used instead of an ##EXTERNAL## bind since write access to the dc=example,dc=com DIT is necessary:
27 +
28 +
29 +{{{# ldapadd -x -D cn=admin,dc=example,dc=com -W <<EOF
30 +dn: ou=Services,dc=example,dc=com
31 +objectClass: organizationalUnit
32 +objectClass: top
33 +ou: Services
34 +
35 +dn: ou=kerberos,ou=Services,dc=example,dc=com
36 +objectClass: organizationalUnit
37 +objectClass: top
38 +ou: kerberos
39 +
40 +dn: uid=kdc,ou=kerberos,ou=Services,dc=example,dc=com
41 +uid: kdc
42 +objectClass: account
43 +objectClass: simpleSecurityObject
44 +userPassword: {CRYPT}x
45 +description: Kerberos KDC Account
46 +
47 +dn: uid=kadmin,ou=kerberos,ou=Services,dc=example,dc=com
48 +uid: kadmin
49 +objectClass: account
50 +objectClass: simpleSecurityObject
51 +userPassword: {CRYPT}x
52 +description: Kerberos Admin Server Account
53 +EOF
54 +Enter LDAP Password: SECRET
55 +
56 +adding new entry "ou=Services,dc=example,dc=com"
57 +
58 +adding new entry "ou=kerberos,ou=Services,dc=example,dc=com"
59 +
60 +adding new entry "uid=kdc,ou=kerberos,ou=Services,dc=example,dc=com"
61 +
62 +adding new entry "uid=kadmin,ou=kerberos,ou=Services,dc=example,dc=com"}}}
63 +
64 +
6 6