I used msktutil to create the keytab.
Thanks in advance for any help.
Hi Pedro,
How did you create your keytab ? What does klist –ekt <squid.keytab>
show ( I assume you use MIT Kerberos) ?
Markus
"Pedro Lobo" palobo@xxxxxxxxx wrote
in message news:40E1E0E7-50C6-4117-94AA-50B06573430A@xxxxxxxxx...
Hi Squid
Gurus,
I'm at my wit's end and in dire need of some squid expertise.
We've got a production environment with a couple of squid 2.7 servers using
NTLM and basic authentication. Recently though, we decided to upgrade and I'm
now setting up squid 3.3 with Kerberos and NTLM Fallback. I've followed just
about every guide I could find and in my testing environment, things were
working great. Now that I've hooked it up to the main domain, things are
awry.
If I use a machine that's not part of the domain, NTLM kicks in and I can
surf the web fine. If I use a Windows XP or Windows Server 2003, kerberos
works just fine, however, if I use a machine Windows 7, 8 or 2008 server, I
keep getting a popup asking me to authenticate and even then, it's and endless
loop until it fails. My cache.log is littered with:
negotiate_kerberos_auth.cc(200): pid=1607 :2014/10/24 23:03:01|
negotiate_kerberos_auth: ERROR: gss_accept_sec_context() failed: Unspecified
GSS failure. Minor code may provide more information.
2014/10/24 23:03:01|
ERROR: Negotiate Authentication validating user. Error returned 'BH
gss_accept_sec_context() failed: Unspecified GSS failure. Minor code may
provide more information. '
The odd thing, is that this has worked before.
Help me Obi Wan... You're my only hope! :)
Current Setup
Squid 3.3 running on Ubuntu 14.04 server. It's connected
to a 2003 server with function level 2000 (I know, we're trying to fase out
the older servers).
krb5.conf
[libdefaults]
default_realm = FAKE.NET
dns_lookup_kdc =
yes
dns_lookup_realm = yes
ticket_lifetime = 24h
default_keytab_name
= /etc/squid3/PROXY.keytab
; for Windows 2003
default_tgs_enctypes = rc4-hmac des-cbc-crc
des-cbc-md5
default_tkt_enctypes = rc4-hmac des-cbc-crc
des-cbc-md5
permitted_enctypes = rc4-hmac des-cbc-crc des-cbc-md5
[realms]
FAKE.NET = {
kdc = srv01.fake.net
kdc =
srv02.fake.net
kdc = srv03.fake.net
admin_server =
srv01.fake.net
default_domain = fake.net
}
[domain_realm]
.fake.net = FAKE.NET
fake.net = FAKE.NET
[logging]
kdc = FILE:/var/log/kdc.log
admin_server =
FILE:/var/log/kadmin.log
default =
FILE:/var/log/krb5lib.log
squid.conf
auth_param negotiate program /usr/lib/squid3/negotiate_kerberos_auth -d -r
-s HTTP/proxy01tst.fake.net
auth_param negotiate children 20 startup=0
idle=1
auth_param negotiate keep_alive off
auth_param ntlm program /usr/bin/ntlm_auth --diagnostics
--helper-protocol=squid-2.5-ntlmssp --domain=FAKE.NET
auth_param ntlm
children 10
auth_param ntlm keep_alive off
Cheers,
Pedro
Cumprimentos
Pedro Lobo
Solutions Architect | System Engineer
pedro.lobo@xxxxxxxxxxxx
Tlm.:
+351 939 528 827 | Tel.: +351 214 127 314
Claranet Portugal
Ed. Parque Expo
Av. D. João II, 1.07-2.1, 4º
Piso
1998-014 Lisboa
www.claranet.pt
Empresa certificada ISO 9001, ISO 20000 e ISO 27001
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