apache using mod_auth_kerb always asks for the password twice
- by DrStalker
(Debian Squeeze)
I'm trying to set apache up to use Kerberos authentication to allow AD users to log in. It is working, but prompts the user twice for a username and password, with the first time being ignored (no matter what is put it in.) Only the second prompt includes the AuthName string from the config (i.e.: the first windows is a generic username/password one, the second includes the title "Kerberos Login") I'm not worried about integrated windows authentication working at this stage, I just want users to be able to login with their AD account so we don't need to set up a second repository of user accounts.
How do I fix this to eliminate that first useless prompt?
The directives in the apache2.conf file:
<Directory /var/www/kerberos>
AuthType Kerberos
AuthName "Kerberos Login"
KrbMethodNegotiate On
KrbMethodK5Passwd On
KrbAuthRealms ONEVUE.COM.AU.LOCAL
Krb5KeyTab /etc/krb5.keytab
KrbServiceName HTTP/[email protected]
require valid-user
</Directory>
krb5.conf:
[libdefaults]
default_realm = ONEVUE.COM.AU.LOCAL
[realms]
ONEVUE.COM.AU.LOCAL = {
kdc = SYD01PWDC01.ONEVUE.COM.AU.LOCAL
master_kdc = SYD01PWDC01.ONEVUE.COM.AU.LOCAL
admin_server = SYD01PWDC01.ONEVUE.COM.AU.LOCAL
default_domain = ONEVUE.COM.AU.LOCAL
}
[login]
krb4_convert = true
krb4_get_tickets = false
The access log when accessing the secured directory (note the two seperate 401's)
192.168.10.115 - - [24/Aug/2012:15:52:01 +1000] "GET /kerberos/ HTTP/1.1" 401 710 "-" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.83 Safari/537.1"
192.168.10.115 - - [24/Aug/2012:15:52:06 +1000] "GET /kerberos/ HTTP/1.1" 401 680 "-" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.83 Safari/537.1"
192.168.10.115 - [email protected] [24/Aug/2012:15:52:10 +1000] "GET /kerberos/ HTTP/1.1" 200 375 "-" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.83 Safari/537.1"
And one line in error.log
[Fri Aug 24 15:52:06 2012] [error] [client 192.168.0.115] gss_accept_sec_context(2) failed: An unsupported mechanism was requested (, Unknown error)
