-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Monday 27 October 2003 00:47, Chris I wrote: > Hi. > > I, and many others at my school are having a problem with (at least) > one person running a DHCP server on their laptops. People often get > invalid addresses due to this and cannot (easily) access network > resources. It's so far been fairly hard to track down this individual, > so we can't disable the server. > > Short from trying harder to find him and kicking him in the shins, can > anybody think of a way to block dhcp servers, or to specify which is > allowed to be used. I've tried ip and mac filtering in iptables, but it > doesnt seem to be effective.
The DHCP client logs the IP of the server which answered and offered. I'd watch the logs, and keep on requesting new addresses until I got the rouge server, then go kick him in the shins :) If the clients can all talk directly to each other (i.e. not though a router) then you'd have to firewall each and every client. - -- Mike Williams -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (GNU/Linux) iD8DBQE/nQSyInuLMrk7bIwRAuh6AJ0UOSI+9WO1osNH0vOdnO4n/ANVogCfeqAS WJOIKbNT+8uPscnGjYx7s3A= =2few -----END PGP SIGNATURE----- -- [EMAIL PROTECTED] mailing list
