Changes for page KerberosAndLDAP
Last modified by Sirius Rayner-Karlsson on 2024/05/09 10:54
From version 15.1
edited by Sirius Rayner-Karlsson
on 2024/05/01 17:28
on 2024/05/01 17:28
Change comment:
There is no comment for this version
To version 13.1
edited by Sirius Rayner-Karlsson
on 2024/05/01 17:11
on 2024/05/01 17:11
Change comment:
There is no comment for this version
Summary
-
Page properties (1 modified, 0 added, 0 removed)
Details
- Page properties
-
- Content
-
... ... @@ -2,7 +2,6 @@ 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 - 6 6 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: 7 7 8 8 ##{{{$ sudo apt install krb5-kdc-ldap krb5-admin-server schema2ldif}}}## ... ... @@ -10,60 +10,64 @@ 10 10 11 11 Then load the ##kerberos## schema: 12 12 13 -##{{{$ zcat /usr/share/doc/krb5-kdc-ldap/kerberos.openldap.ldif.gz | ldapadd -H ldap://nas.fqdn/ -D uid=root,cn=users,dc=example,dc=com -W}}}## 14 -##{{{Password:}}}## 15 -##{{{adding new entry "cn=kerberos,cn=schema,cn=config"}}}## 16 -##{{{$}}}## 12 +##{{{$ zcat /usr/share/doc/krb5-kdc-ldap/kerberos.openldap.ldif.gz | ldapadd -H ldap:~/~/nas.fqdn/ -D uid=root,cn=users,dc=example,dc=com Password: adding new entry "cn=kerberos,cn=schema,cn=config" $}}}## 17 17 18 18 19 -Having an index on the ##krbPrincipalName## improves performance and also suppresses some log messages if ##slapd## is configured to log more than default for the database(s) where you intend to store Kerberos data. As this is OpenLDAP on the Synology, it does not use ##mdb## format, it uses ##bdb##: 20 20 21 -##{{{$ sudo ldapmodify -H ldap://nas.fqhn/ -D uid=root,cn=users,dc=example,dc=com -W <<EOF}}}## 22 -##{{{dn: olcDatabase={1}bdb,cn=config}}}## 23 -##{{{add: olcDbIndex}}}## 24 -##{{{olcDbIndex: krbPrincipalName eq,pres,sub}}}## 25 -##{{{EOF}}}## 26 -##{{{Password:}}}## 27 -##{{{modifying entry "olcDatabase={1}bdb,cn=config"}}}## 28 -##{{{$}}}## 16 +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: 29 29 18 +{{{# ldapmodify -H ldap:~/~/nas.fqhn <<EOF 30 30 31 - Next, you needto create andconfigure two entries which will be used by the Kerberos servers toconnect to OpenLDAP. As you will not run the Kerberos KDCand Admin Server onthe same hostasOpenLDAP, these steps are required. In order to keep things nicely separated, everything willbecreated under a separate ##organizationalUnit##.20 +dn: olcDatabase={1}bdb,cn=config 32 32 33 -##{{{# ldapadd -H ldap://nas.fqhn/ -D uid=root,cn=users,dc=example,dc=com -W <<EOF}}}## 34 -##{{{dn: ou=Services,dc=example,dc=com}}}## 35 -##{{{objectClass: organizationalUnit}}}## 36 -##{{{objectClass: top}}}## 37 -##{{{ou: Services}}}## 38 -## ## 39 -##{{{dn: ou=kerberos,ou=Services,dc=example,dc=com}}}## 40 -##{{{objectClass: organizationalUnit}}}## 41 -##{{{objectClass: top}}}## 42 -##{{{ou: kerberos}}}## 43 -## ## 44 -##{{{dn: uid=kdc,ou=kerberos,ou=Services,dc=example,dc=com}}}## 45 -##{{{uid: kdc}}}## 46 -##{{{objectClass: account}}}## 47 -##{{{objectClass: simpleSecurityObject}}}## 48 -##{{{userPassword: {CRYPT}x}}}## 49 -##{{{description: Kerberos KDC Account}}}## 50 -## ## 51 -##{{{dn: uid=kadmin,ou=kerberos,ou=Services,dc=example,dc=com}}}## 52 -##{{{uid: kadmin}}}## 53 -##{{{objectClass: account}}}## 54 -##{{{objectClass: simpleSecurityObject}}}## 55 -##{{{userPassword: {CRYPT}x}}}## 56 -##{{{description: Kerberos Admin Server Account}}}## 57 -##{{{EOF}}}## 58 -##{{{Enter LDAP Password: SECRET}}}## 59 -## ## 60 -##{{{adding new entry "ou=Services,dc=example,dc=com"}}}## 61 -## ## 62 -##{{{adding new entry "ou=kerberos,ou=Services,dc=example,dc=com"}}}## 63 -## ## 64 -##{{{adding new entry "uid=kdc,ou=kerberos,ou=Services,dc=example,dc=com"}}}## 65 -## ## 66 -##{{{adding new entry "uid=kadmin,ou=kerberos,ou=Services,dc=example,dc=com"}}}## 22 +add: olcDbIndex 67 67 24 +olcDbIndex: krbPrincipalName eq,pres,sub 68 68 26 +EOF 27 + 28 +modifying entry "olcDatabase={1}bdb,cn=config" 29 + 30 +}}} 31 + 32 + 33 +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: 34 + 35 + 36 +{{{# ldapadd -x -D cn=admin,dc=example,dc=com -W <<EOF 37 +dn: ou=Services,dc=example,dc=com 38 +objectClass: organizationalUnit 39 +objectClass: top 40 +ou: Services 41 + 42 +dn: ou=kerberos,ou=Services,dc=example,dc=com 43 +objectClass: organizationalUnit 44 +objectClass: top 45 +ou: kerberos 46 + 47 +dn: uid=kdc,ou=kerberos,ou=Services,dc=example,dc=com 48 +uid: kdc 49 +objectClass: account 50 +objectClass: simpleSecurityObject 51 +userPassword: {CRYPT}x 52 +description: Kerberos KDC Account 53 + 54 +dn: uid=kadmin,ou=kerberos,ou=Services,dc=example,dc=com 55 +uid: kadmin 56 +objectClass: account 57 +objectClass: simpleSecurityObject 58 +userPassword: {CRYPT}x 59 +description: Kerberos Admin Server Account 60 +EOF 61 +Enter LDAP Password: SECRET 62 + 63 +adding new entry "ou=Services,dc=example,dc=com" 64 + 65 +adding new entry "ou=kerberos,ou=Services,dc=example,dc=com" 66 + 67 +adding new entry "uid=kdc,ou=kerberos,ou=Services,dc=example,dc=com" 68 + 69 +adding new entry "uid=kadmin,ou=kerberos,ou=Services,dc=example,dc=com"}}} 70 + 71 + 69 69