[squid-users] squid auth NCSA + client IP ?

[Varun]

Hello,

I have proxy working using client IP as follows:

acl authentic   src a.b.c.d
http_access allow authentic

I have proxy working using NCSA with
username and password as follows:

acl authentic   proxy_auth      REQUIRED
http_access allow authentic

What I want is client IP + username and password.

Howto combine the two ?

Thanks in advance

Varun