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This article documents how to set up a firewall using a PPP dialup with FreeBSD and IPFW, and specifically with firewalling over a dialup with a dynamically assigned IP address. This document does not include information on setting up an initial PPP connection. For more information on setting up a PPP connection, consult the ppp(8) manual page.
This document outlines the steps required to set up firewalling with FreeBSD when an
IP address is assigned dynamically by your ISP. While every effort has been made to make
this document as informative and correct as possible, you are welcome to mail any
corrections, comments or suggestions to the author at