Hi all, At present my Proxy server and firewall is an OpenBSD 3.6 box running Squid.
I have a DSL internet connection with Static IP. The squid proxy listens on 127.0.0.1:8080. The clients have their browsers configured to use proxy server address as 172.16.1.1:8080 which is the internal interface of the OpenBSD gateway. The requests that comes to 172.16.1.1:8080 is redirected by PF to 127.0.0.1:8080 and thus squid acts as the proxy for all requests. Now things are working fine. But I want to add a third NIC to the OpenBSD Gateway with a cable internet connection. The IP address, Gateway address and DNS will be got by DHCP on that interface. Now I want to allow only a certain group on the LAN to use the DSL connection. All others should use the cable modem connection to connect to the internet. How can I accomplish this with PF and Squid? Also how should I configure the ftp-proxy that comes by defaul with OpenBSD in this situation? For SMTP, POP which are NATed this can be accomplished by adding a few rules and is easy :)) What are the problems that can be faced when there are two internet connections to from a gateway? ie both will have differrent Gateway and DNS address and one is static where as the other is dhcp!! Has anyone done this before? Thankyou so much God bless you all Kind Regards Siju
