I have a redhat 7.3 box that is dualhomed. It is my firewall and vpn server. I can successfully vpn (with IPSEC) into it. If I use the following command "iptables -t nat -I POSTROUTING -o eth0 -j MASQUERADE" I cannot use VPN, but my internal network can only receive email (POP3) and telnet after I use this command. I have set up squid so I proxy my www traffic. Can I NAT my pop3 and my telnet, and still VPN (IPSEC)? I am guessing my command is too general and I need to be more specific - ports, source, etc defined. Thanks, Doug
