[squid-users] NTLM authentication

Hi.

I'm using Squid 2.5.PRE7 with both basic MSNT and NTLM authentication methods.

The two questions:
1) How can i collect/see the per user statistic if only IP addresses (without usernames) are stored in access.log?
2) In MSNT method there are two files on Proxy server's side - "$SQUID_BASE/etc/allowusers" and "$SQUID_BASE/etc/denyusers". So, i can permit or deny the access of the user to Internet in these files. Unfortunately, there is no such scheme in NTLM method - all requests passed directly to NT domain controller. How can i limit the access of users to Internet on Proxy server's side using NTLM method?

--
Bests,
Sasha