libpam_krb5 + heimdal issue (newbie alarm)

Marcus Blomenkamp mblomenk at gmx.de
Thu Jul 25 04:06:40 EDT 2002


Hi there.

I'm a real nb when it comes to Kerberos/LDAP/PAM/NSS etc.

I've installed heimdal on a fresh debian-3.0 system, realmname 
MY_KRB_REALM and added a user marcus. No problem so far, i can 'kinit 
<marcus>' fine. But I've got major problems getting it running with PAM. 
I made the modifications to pam config files locally for simplicities 
sake. I am following the steps of documentation from: 
http://www.ofb.net/~jheiss/krbldap/howto.html

Situation in short:
I added a user to kerberos called 'marcus'.
I added a user locally to passwd/shadow and modified password to '*K*', 
so i don't have to get LDAP running first.
I modified the appropriate lines in files in '/etc/pam.d' according to 
the documentation:
	'login'
	auth	sufficient	pam_unix.so
	auth	required	pam_krb5.so use_first_pass

	'other'
	session		optional	pam_krb5.so
	session		required	pam_unix.so
	password	sufficient	pam_unix.so
	password	required	pam_krb5.so use_first_pass

I tried to do 'login marcus' but it failed with 'Login incorrect'. 
Heimdal-kdc logfiles spills out the following for each attempt:

2002-07-25T09:41:21 AS-REQ marcus at MY_KRB_REALM from IPv4:192.168.1.101 
for krbtgt/MY_KRB_REALM at MY_KRB_REALM
2002-07-25T09:41:21 Using des3-cbc-sha1/des3-cbc-sha1
2002-07-25T09:41:21 sending 617 bytes to IPv4:192.168.1.101

I bet this is a simple issue for you out there. Is it because of the 
'use_first_pass' parameters? I've never seen them before. Or is it a 
crypto thing - des vs 3des?

Big Thanks, Marcus




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