I have a squid transparent proxy that's working great.
To save time on client configurations I've decided to redirect port 80 to 3128 so I can configure for all clients the new proxy just changing gateway in dhcp server. It went well, I've used this rule:
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 3128
Now I can surf the internet from clients without problems but it seems I can't open some websites, like gmail.
It loads for ages and then I get a blank page.
If I set manually proxy values in the browser it works without problems. Using port redirection work for some sites but won't work for others...
Reading here and there I see that is a common problem solved in various (and difficult) ways like this: http://www.rahulpahade.com/content/squid-transparent-proxy-over-ssl-https
I'd need simple commands so let https traffic go straight to the internet... How can I achieve this?