[squid-users] authentication mechanism selected based on ip-address

[Joseph Spadavecchia]

Hi all,

We have a requirement to use different authentication mechanisms based 
on the subnet/ip-address of the client.

For example, a client from one subnet would authenticate against ntlm 
while a client from another subnet would authenticate against an LDAP 
server.

AFAIK, this is normally done by running multiple instances of squid; but 
we have the requirement to do it with a single instance.  One way of 
achieving this would be to modify squid to pass the client's ip-address 
along with the authentication information.  However, I'd like to do it 
cleanly without modifying squid.

Can anyone offer suggestions for doing this cleanly, without 
modifications to squid.

Thanks in advance.
Joseph