> Hi all: > > I have a Squid running on 192.168.1.1 listening on 3128 TCP port. Users > from 192.168.1.0/24 can browse the Internet without problems thanks to a > REDIRECT rule in my shorewall config. > > But users from differents networks (192.168.2.0/24, 192.168.3.0/24, > etc.) can't browse the Internet. Those networks are connected to > 192.168.1.0/24 via a VPN connection. > > My redirect rule in iptables syntax is like this: > > iptables -t nat -A PREROUTING -s 0.0.0.0/24 -i eth2 -p tcp --dport 80 -j > REDIRECT --to-ports > > Is there a restriction to work transparent proxy for other networks > different from 192.168.1.0/24? Do I have to configure squid to listen on > each range o network addresses? Your current rule is restricting the REDIRECT to specific interface and 0.0.0.0 source. not sure host that 0.0.0.0 bit works. Does the VPN traffic come in from a virtual interface? There should also be a SNAT or MASQUERADE rule creating symetry for the proper routing of replies. The entire ruleset you need is listed in the wiki: http://wiki.squid-cache.org/ConfigExamples/Intercept/LinuxRedirect Amos
