<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title></title><style type="text/css">.felamimail-body-blockquote {margin: 5px 10px 0 3px;padding-left: 10px;border-left: 2px solid #000088;} </style></head><body>Hello together,<br><br>My Issue is the following: <br><br>Using Squid3 with Kerberos Auth works just fine but does not update the users group membership in the winbind cache of samba as for examle ntlm_auth does.<br><br>So when using /usr/lib/squid3/negotiate_kerberos_auth for Kerberos, the auth works, but group memberships for my user as example are never updated, when I comment this auth helper then it gets updated because then I use ntlm_auth for ntlmssp<br>So if I have a new group eg: My_Test , then I can check this like this: <br><br>wbinfo -n My_Test -> returns SID of My_Test<br>wbinfo -Y SID -> returns mapped GID<br>wbinfo -r myuser | grep GID -> GID is not listed!!<br><br>getent group My_Test -> returns: myuser is member of that group! So just in my account "myuser" it is not listed (wbinfo -r myuser | grep GID -> GID is not listed!!) but ext_wbinfo_group_acl is checking my group membership based on the commands listed above.<br><br>Commenting Kerberos auth in the squid conf, so that only ntlm_auth is used and requesting one website to be sure to have done an auth, works. So then the GID is listed in the output of wbinfo -r myuser<br><br>How can I ensure that my memberships are getting updated using /usr/lib/squid3/negotiate_kerberos_auth as it does work with ntlm_user? Or is there another auth helper that can be used for Kerberos that is doing what ntlm_user does automatically after an successfull authentication?<br><br>My Squid Config for Auth Helpers looks like this:<br><br>######################################################### Kerberos #########################################################<br>#auth_param negotiate program /usr/lib/squid3/negotiate_kerberos_auth -r -s HTTP/myserver.MYDOMAIN@MYDOMAIN<br>#auth_param negotiate children 300<br>#auth_param negotiate keep_alive on<br><br>######################################################### NTLM #########################################################<br>auth_param ntlm program /usr/bin/ntlm_auth --helper-protocol=squid-2.5-ntlmssp<br>auth_param ntlm children 50<br>auth_param ntlm keep_alive off<br><br>######################################################### BASIC #########################################################<br>auth_param basic program /usr/bin/ntlm_auth --helper-protocol=squid-2.5-basic<br>auth_param basic children 50<br>auth_param basic credentialsttl 2 hours<br>auth_param basic realm Windows Authentication required<br>auth_param basic casesensitive off<br><br>Also I am using the following to check group memberships, which is working fine !! with all auth helpers !! and it is much faster than the slow Kerberos group check, I assume that this helper is updating automatically the winbind group cache, which is the reason that the group itself is beeing recognized and I am also a member of that group when I check that specific group via getent group My_Test<br><br>external_acl_type nt_group ttl=60 children-max=300 children-startup=50 %LOGIN /usr/lib/squid3/ext_wbinfo_group_acl -K<br><br>Software Versions used:<br>- Squid Cache: Version 3.4.8<br>- Samba & winbindd Version 4.1.17-Debian<br>- Distri: Debian Jessie<br><br><br><span id="felamimail-body-signature">-- <br><span id="felamimail_inline_felamimail-body-signature">-- <br>Best regards,<br>Enrico Heine<br><br>This email and any files transmitted
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