nanog mailing list archives
Re: Crazy flying netbios packets
From: Eric Germann <ekgermann () cctec com>
Date: Thu, 03 Sep 1998 09:32:46 -0400
At 02:59 PM 9/2/98 -0600, Pete Ashdown wrote:
Has anyone done any estimates on how much net-wide traffic is useless netbios udp?
No. But then again, theres a lot of useless traffic, i.e. Phlegm-ings rants currently on the ietf list (at least he's not on NANOG, whew)
Are there any suggestions for cutting large chunks of this out of my network without punishing SAMBA and other users who need it?
1. Implement WINS within the organization and set the netbios node type to h node (0x8) This will force the netbios stack to use a wins lookup and then a lookup via broadcast. 2. Implement WINS within the organization and set the netbios node type to p node (0x4?) This forces the client to ONLY use the WINS server. Note every server has to be registered in the wins database. Neither of these affect DNS resolution. Also, try blocking udp and tcp ports 137, 138 and 139 at your borders. Wins, properly implemented, can eliminate about 90%+ of useless name resolution traffic. Anxiously waiting for Fraziers Linux response :) Eric ========================================================================== Eric Germann CCTec ekgermann () cctec com Van Wert, OH 45891 http://www.cctec.com Ph: 419 968 2640 Fax: 419 968 2641 Network Design, Connectivity & System Integration Services A Microsoft Solution Provider
Current thread:
- Crazy flying netbios packets Pete Ashdown (Sep 02)
- Re: Crazy flying netbios packets Leigh Porter (Sep 03)
- Re: Crazy flying netbios packets Eric Germann (Sep 03)
- Re: Crazy flying netbios packets blast (Sep 03)
- Re: Crazy flying netbios packets Samuel Gunnestad (Sep 11)
- Re: Crazy flying netbios packets blast (Sep 03)
- <Possible follow-ups>
- Re: Crazy flying netbios packets jprovo (Sep 03)
- Re: Crazy flying netbios packets Paul Thornton (Sep 03)
- Re: Crazy flying netbios packets Karl Denninger (Sep 03)
- Re: Crazy flying netbios packets Dean Anderson (Sep 03)
- Re: Crazy flying netbios packets Stephen Stuart (Sep 03)