I have a Debian gateway system, doing pppd demand dialling. ISP gives a new IP address with each connect. No problems with that - it works as advertised. My problem is that once up, it often does not shut down even when there has been no traffic from me for longer than the set time-out period. The reason appears to be traffic coming in from outside. It looks (Ethereal) as though it is traffic for a previous user of the IP address I now have. My (simple) iptables rules ensure that my machine does not respond, but the traffic is enough to trigger pppd into keeping the connection active. I note that back in Jan 2003, someone had the same problem but got no response on the mailing list.
How can I ensure that traffic initiated from outside does not keep the dial-up connection open? -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]