> > The same websites work fine on my "old" proxy (squid 2.5 stable9), and this > > proxy uses also NTLM authentication. > > Do you know what could have changed in squid that explain this different > > behavior ? > > Same Samba version? The bulk of the NTLM authentication is done by > Samba, Squid just acts as a relay between the client and Samba.. > > The only difference I can think of in Squid is that there is slight > change in persistent connection management. You can try > > auth_param ntlm keep_alive off > > to see if that makes any difference. > Bad news. No changes. However, it may be linked to this message i see in the cache.log since we've upgraded the proxy : [2007/05/11 08:04:02, 1] libsmb/ntlmssp.c:ntlmssp_update(259) got NTLMSSP command 3, expected 1