Date: Wed, 16 Jun 2004 18:41:23 +0200 From: Martin <nakal@web.de> To: FreeBSD Current <freebsd-current@freebsd.org> Subject: ppp with dynamic IPs and ipfw "me" Message-ID: <1087404082.795.28.camel@klotz.local>
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Hello, I've a strange effect here when using "ppp -ddial" with my ISP and my firewall rules. Sometimes, I get disconnected with my DSL router and ppp reconnects me in background. This is correct so far, but I also get a new (dynamic) IP and it seems that ipfw does not forget my old IP. I noticed this behavior with the rules which restrict the communication to the ntpd-port 123. The rules look like this: allow udp from xx.xx.xx.xx 123 to me dst-port 123 allow udp from me 123 to xx.xx.xx.xx dst-port 123 After I get a new IP, the logs show that the communication from "me" to xx.xx.xx.xx is blocked. I'm on DSL here (using PPPoE and NAT). Is this a bug or should I update the rules myself? If yes, what is the best way to update the rules? Martin
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