Re: NetBEUI and security

From: Duane Arnold (darnold92@Insightbb.com)
Date: 11/02/02 

From: "Duane Arnold" <darnold92@Insightbb.com>
Date: Sat, 02 Nov 2002 00:13:12 GMT

If the machines are setting behind a router that has SPI enabled, I don't
think no traffic from the outside is going to be able to come down the
NetBEUI ports.

If your concern is about protecting NetBEUI from behind the router on each
machine, then software firewall such as BlackICE will allow you to enable
File and Print Sharing and the NetBEUI protocol on each machine.

BlackIce has the features called Allow Internet Sharing and Allow NetBIOS
Neighborhood. When these features are enabled, it opens ports 137-139 and
445 on Win2k and XP machines to all IP(s) automatically. But it does an
ACCEPT, which enables the IDS and will detect a worm, Trojan Horse, port
scans etc, etc coming in the traffic and block it.

So if the machines are behind a router using SPI and have BlackIce on them
and NetBEUI or NetBIOS, File and Print Sharing and NetBIOS Neighborhood are
all enabled on the machines, there is not an issue about protection.

Duane :)

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