SSSD/Kerberos/LDAP Authentication: Difference between revisions
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#Modify the /etc/samba/smb.conf file as follows, changes are are in bold italic. | #Modify the /etc/samba/smb.conf file as follows, changes are are in bold italic. | ||
###:<tt>[global] | ###:<tt>[global] | ||
###:workgroup = '''''<AD DOMAIN minus top level domain>''''' | |||
###:''''';''''' server string = Samba Server Version %v | |||
###:.''''' | |||
###:.''''' | |||
###:.''''' | |||
###:''''';''''' security = user | |||
###:''''';''''' passdb backend = tdbsam | |||
###:.''''' | |||
###:.''''' | |||
###:.''''' | |||
###:'''''client signing = yes''''' | |||
###:'''''client use spnego = yes | |||
###:'''''kerberos method = secrets and keytab | |||
###:'''''security = ads | |||
###:'''''passdb backend = tdbsam | |||
###:'''''realm = <AD DOMAIN> | |||
###:'''''.''''' | |||
###:'''''.''''' | |||
###:''''';''''' load printers = yes | |||
###:''''';''''' cups options = raw | |||
###:'''''.''''' | |||
###:'''''.''''' | |||
###:'''''.''''' | |||
###:''''';'''''[printers] | |||
###:''''';'''''comment = All Printers | |||
###:''''';'''''path = /var/spool/samba | |||
###:''''';''''' browseable = no | |||
###:''''';''''' guest ok = no | |||
###:''''';''''' writable = no | |||
###:''''';''''' printable = yes</tt> | |||
Revision as of 16:44, 21 July 2016
Install Required Packages
- RHEL6: Install the following packages.
- # yum install sssd krb5-workstation samba-common authconfig oddjob oddjob-mkhomedir openldap-clients ipa-client sssd-common krb5-devel
- RHEL7: Install the following packages
- # yum install sssd krb5-workstation samba-common authconfig oddjob oddjob-mkhomedir openldap-clients sssd-libwbclient sssd-tools ipa-client sssd-common krb5-devel
- UBUNTU: Install the following packages
- $ sudo apt-get install krb5-user krb5-config samba sssd ntp nscd libpam-sss libnss-sss sssd-tools sssd-ad libpam-modules
Configure Kerberos
- Gather the list of KDCs for the realm, the KDCs are bold italic.
- # nslookup -type=SRV _kerberos._tcp.<domain in lowercase>
- Output of previous command:
- Server: <ip address>
- Address: <ip address>#53
_kerberos._tcp.<domain in lowercase> service = 0 100 88 dc1.<domain in lowercase>.- _kerberos._tcp.<domain in lowercase> service = 0 100 88 dc2.<domain in lowercase>.
- _kerberos._tcp.<domain in lowercase> service = 0 100 88 dc3.<domain in lowercase>.
- _kerberos._tcp.<domain in lowercase> service = 0 100 88 dc4.<domain in lowercase>.
- # nslookup -type=SRV _kerberos._tcp.<domain in lowercase>
- Create a backup of the /etc/krb5.conf file.
- # cp -p /etc/krb5.conf{,.bak}
- Modify the /etc/krb5.conf file as follows, changes are bold italic.
- [logging]
- default = FILE:/var/log/krb5libs.log
- kdc = FILE:/var/log/krb5kdc.log
- admin_server = FILE:/var/log/kadmind.log
[libdefaults]- default_realm = <AD DOMAIN>
- dns_lookup_realm = false
- dns_lookup_kdc = false
- ticket_lifetime = 24h
- renew_lifetime = 7d
- forwardable = true
[realms]- <AD DOMAIN> = {
- kdc = dc1.<AD DOMAIN>
- kdc = dc2.<AD DOMAIN>
- kdc = dc3.<AD DOMAIN>
- kdc = dc4.<AD DOMAIN>
- admin_server = <AD DOMAIN>
- }
[domain_realm]- .<ad domain> = <AD DOMAIN>
- <ad domain> = <AD DOMAIN>
Configure Samba
- Create a backup of the /etc/samba/smb.conf file.
- # cp -p /etc/samba/smb.conf{,.bak}
- Modify the /etc/samba/smb.conf file as follows, changes are are in bold italic.
- [global]
- workgroup = <AD DOMAIN minus top level domain>
- ; server string = Samba Server Version %v
- .
- .
- .
- ; security = user
- ; passdb backend = tdbsam
- .
- .
- .
- client signing = yes
- client use spnego = yes
- kerberos method = secrets and keytab
- security = ads
- passdb backend = tdbsam
- realm = <AD DOMAIN>
- .
- .
- ; load printers = yes
- ; cups options = raw
- .
- .
- .
- ;[printers]
- ;comment = All Printers
- ;path = /var/spool/samba
- ; browseable = no
- ; guest ok = no
- ; writable = no
- ; printable = yes
3. Verify the Samba configuration.
# testparm
4. The output should be similar to [global] workgroup = <AD DOMAIN minus top level domain> realm = <AD DOMAIN> security = ADS kerberos method = secrets and keytab log file = /var/log/samba/log.%m max log size = 50 client signing = required idmap config * : backend = tdb
[homes] comment = Home Directories read only = No browseable = No