> > I followed the steps in this guide > > http://wiki.squid-cache.org/ConfigExamples/Intercept/LinuxDnat > > and it works as I wish. Websites with entries in /etc/hosts are > forwarded fine, however with -d 9 supplied to ./squid I get: > > WARNING: transparent proxying not supported. > > I'm initially thinking of ignoring this warning as everything appears to > be working fine. > > Can anyone think why I should'nt ignore this? The NAT lookup support is not built into Squid. Your logs and traffic traces may not reflect accurately where the requests are coming from. Check your squid is built with --enable-linux-netfilter , and that there are no build-time errors about that option. Amos