Hi all, I have the following squestions on the below snip of configuration: Does squid supports multiple schemes of authentification? The problem i encouter is that i am able to auth onyl with group proxy_c (e.g the last acl no matter how do i modify the file) Basically what i need is to assign each group of users different tcp_outgoing_ip addresses. The network background cannot be modified that is why i`m looking for a workaround. auth_param basic program /usr/local/squid/libexec/ncsa_auth /home/ticketre/public_html/sarg/chpass/users/a.pass auth_param basic children 1 auth_param basic realm Proxy Server auth_param basic credentialsttl 1 hour acl proxy_a proxy_auth REQUIRED tcp_outgoing_address 66.147.239.138 proxy_a http_access allow proxy_a auth_param basic program /usr/local/squid/libexec/ncsa_auth /home/ticketre/public_html/sarg/chpass/users/b.pass auth_param basic children 1 auth_param basic realm Proxy Server auth_param basic credentialsttl 1 hour acl proxy_b proxy_auth REQUIRED tcp_outgoing_address 66.147.239.139 proxy_b http_access allow proxy_b auth_param basic program /usr/local/squid/libexec/ncsa_auth /home/ticketre/public_html/sarg/chpass/users/c.pass auth_param basic children 1 auth_param basic realm Proxy Server auth_param basic credentialsttl 1 hour acl proxy_c proxy_auth REQUIRED tcp_outgoing_address 66.147.239.140 proxy_c http_access allow proxy_c http_access deny all