Fixed Service Proxy


Fixed Service Proxy

This service subcommand establishes a service-independent relationship between an apparent IP Address on a public interface, and an actual IP Address on the private side.

Any service request from the public area that is addressed to the apparent IP Address is redirected to the actual service provider on the private network. Conversely, all reply messages from the actual IP Address (the actual server) are rewritten to appear to originate at the apparent public address.

Service requests that originate at the designated private “actual” server, such as telnet, ftp, www, etc., are rewritten to appear to originate at the apparent public address, also.

All affected checksums are recalculated in the messages before they are transmitted.

Command Syntax

  service [int] fixed [app IP] [act IP] {flags}

Where:

  • “int” is the NetNAT Interface on the “public” side (i.e. en0, tr0, ppp0)
  • “app IP” is the apparent IP Address for the public side
  • “act IP” is the actual IP Address of the real server
  • “flags” is an optional hex value for monitoring and logging flags

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