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Identify and Fix LDAP and Kerberos Identity Management Issues
In this exercise, you will troubleshoot and resolve authentication issues with both LDAP and Kerberos. *This course is not approved or sponsored by Red Hat.*

Lab Info
Table of Contents
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Challenge
Verify LDAP and Kerberos logins on Server1.
On Server1 (10.0.1.10)
Attempt to SSH in as
testuser01
and receive a Kerberos ticket:ssh testuser01@localhost
kinit
LDAP seems functional, but Kerberos is broken. View the Kerberos config:
cat /etc/krb5.conf
Modify
/etc/krb5.conf
:vim /etc/krb5.conf
Change
EXAMPLE_COM
toEXAMPLE.COM
.Use
authconfig
to enable Kerberos logins:authconfig-tui
SSH in as
testuser01
and receive a Kerberos ticket:ssh testuser01@localhost
kinit
klist
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Challenge
Verify LDAP and Kerberos logins on Server2.
On Server2 (10.0.1.11)
Attempt to SSH in as
testuser01
:ssh testuser01@localhost
Use
getent
to retrieve account information abouttestuser01
:getent passwd testuser01
Verify LDAP and Kerberos logins are enabled:
cat /etc/sysconfig/authconfig
User
authconfig-tui
to modify LDAP settings:authconfig-tui
Use
getent
to retrieve account information abouttestuser01
:getent passwd testuser01
SSH in as
testuser01
and receive a Kerberos ticket:ssh testuser01@localhost
kinit
klist
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