Re: a lot of netbios traffic?

From: Daniel Polombo (polombo@cartel-info.fr)
Date: 01/02/02 

From: Daniel Polombo <polombo@cartel-info.fr>
Date: Wed, 2 Jan 2002 12:11:24 +0000 (UTC)

Yan Seiner s'est fendu de cette remarque :
> NetBEUI is incredibly noisy. Every 10 minutes or so every win box
> broadcasts its information to the network. Then there are the WINS
> elections, to be held at some frequent interval.

This is NetBios (presumably over IP), not NetBEUI. Also, there are no
WINS elections that I am aware of, only master browser elections (which
are completely independant from WINS).

> If you have a lot of win boxes, and they have TCP/IP installed, that adds
> up to a lot of useless traffic.
>
> Nothing you can do about it. Forget it. Block ports 135, 137-139, both
> TCP and UDP, and go on your way.

IIRC, 135 is used by Microsoft RPC services, and might be used by other
stuff than NetBios.

The fact that heavy network-ns and network-dg traffic is spotted may
simply mean that there is a lot of file-sharing going on (through
windows' native resource sharing system, SMB, which sits on top of
NetBios).

Oh, btw ... what does this have to do with linux? 

-- 
BOFH excuse #176:

vapors from evaporating sticky-note adhesives

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