I've configured squid with squid with squidguard and when using proxy in browser it works fine. But I want to enforce using proxy (probably in iptables) in all browsers. Now it can be disabled in the browser settings by user.
My setup is: one standalone pc with ubuntu running the squid and squidguard and on this very same device I want to somehow enforce using the proxy. Squid conf file has set:
http_port 3128 transparent