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hello list,

we want to use kerberos for authentication and to secure connections for 
telnet sessions.
so i installed kerberos v5 for the debian system via apt-get and did the 
configuration.
attached are the configs for this system.

kinit works for a user, but the start of a telnet session is refused 
with the message
"Authentication failed". i used the command "kinit stefan" and 
"telnet.krb5 -a -F vxr-r.imos.net."
"vxr-r.imos.net" is the cisco router i want to connect to.
when i look into the logs i see the following messages:

Nov 11 09:49:28 alpha krb5kdc[8745](info): AS_REQ (1 etypes {1}) 
192.168.3.3(16417): NEEDED_PREAUTH: stefan@IMOS.NET for 
krbtgt/IMOS.NET@IMOS.NET, Additional pre-authentication required
Nov 11 09:49:30 alpha krb5kdc[8745](info): AS_REQ (1 etypes {1}) 
192.168.3.3(16417): ISSUE: authtime 1100162970, etypes {rep=1 tkt=16 
ses=1}, stefan@IMOS.NET for krbtgt/IMOS.NET@IMOS.NET
Nov 11 09:49:33 alpha krb5kdc[8745](info): TGS_REQ (1 etypes {1}) 
192.168.3.3(16417): UNKNOWN_SERVER: authtime 1100162970,  
stefan@IMOS.NET for host/vxr-r.imos.net@IMOS.NET, Server not found in 
Kerberos database
Nov 11 09:49:33 alpha krb5kdc[8745](info): TGS_REQ (1 etypes {1}) 
192.168.3.3(16417): UNKNOWN_SERVER: authtime 1100162970,  
stefan@IMOS.NET for host/vxr-r.imos.net@IMOS.NET, Server not found in 
Kerberos database

but the kerberos server alpha.imos.net is in the kerberos database, as 
vxr-r.imos.net is.
can anyone give me a hint what the problem is?
if you need additional infos please tell..

bye
stefan
IMOS.NET

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[libdefaults]
	default_realm = IMOS.NET
# The following krb5.conf variables are only for MIT Kerberos.
	default_tgs_enctypes = des-cbc-crc 
	default_tkt_enctypes = des-cbc-crc 
	permitted_enctypes = des3-hmac-sha1 des-cbc-crc des-cbc-md5 des-cbc-crc
	krb4_config = /etc/krb.conf
	krb4_realms = /etc/krb.realms
	kdc_timesync = 1
	ccache_type = 4
	forwardable = true
	proxiable = true
# The following libdefaults parameters are only for Heimdal Kerberos.
	v4_instance_resolve = false
	v4_name_convert = {
		host = {
			rcmd = host
			ftp = ftp
		}
		plain = {
			something = something-else
		}
	}

[realms]
	IMOS.NET = {
		kdc = alpha.imos.net:88
		admin_server = alpha.imos.net
	}

[domain_realm]
	.imos.net = IMOS.NET
	imos.net = IMOS:NET

[login]
	krb4_convert = true
	krb4_get_tickets = true
[logging]
	default = FILE:/var/log/krb5.log

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kadmin.local:  listprincs
K/M@IMOS.NET
alfred/admin@IMOS.NET
alfred@IMOS.NET
host/alpha.imos.net@IMOS.NET
kadmin/admin@IMOS.NET
kadmin/changepw@IMOS.NET
kadmin/history@IMOS.NET
krbtgt/IMOS.NET@IMOS.NET
stefan/admin@IMOS.NET
stefan@IMOS.NET


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ktutil:  l
slot KVNO Principal
---- ---- ---------------------------------------------------------------------
   1    4                          stefan@IMOS.NET
   2    4                          stefan@IMOS.NET
   3    3                          alfred@IMOS.NET
   4    3                          alfred@IMOS.NET
   5    3             host/alpha.imos.net@IMOS.NET
   6    3             host/alpha.imos.net@IMOS.NET


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