There seems to be a problem with compiling it into the kernel. IP Masquerade Setup First off, check out the Linux IP Masquerade page . You must also arrange to have the appropriate modules loaded on re-boot. Tools Socks Proxy for telnet, ftp, archie. It allows you to negotiate your way through firewalls by forwarding traffic to socks servers.
Most commercial firewalls support the socks protocol.
It can also be compiled with Kerberos to provide better authentication and traffic encryption. NetMeeting Netmeeting and other conferencing software is a firewall nightmare. The port negotiation is via an encrypted channel, just to be difficult. Netmeeting also requires a server for rendezvous. The best idea is to place a hardened Netmeeting server or MCU from Whitepine on Linux or Solaris in the DMZ to handle this.