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Article #529

Re: "Shields UP!" - Port 139 & NetBIOS

#529
From: John Underwood
Date: Sun, 13 Feb 2000 00:00
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On Sun, 13 Feb 2000 at 15:41:53, Stuart Brady <stuart@bradymill-no.spam-
demon.co.uk> wrote in demon.tech.pc:
(Reference: <GOun+BABDtp4Iw5J@bradymill.demon.co.uk>)

>On Fri, 11 Feb 2000, Andy Mabbett wrote:
>>What do the panel think of the advice at:
>>
>>     http://grc.com/su-rebinding9x.htm
>>
>>about protecting Port 139
>
>A good idea, unless you _need_ Windows networking over TCP/IP. If you
>use a firewall and you don't bind any clients or services to your
>dial-up adapter, you should be safe, though.

You probably need an "or" rather than an "and" in there. If you don't
need to share files over TCP/IP, you will be safe. If you do you will
need a firewall.

You may need to use, say PCAnywhere, to exchange data with other
computers across the Internet. This will require sharing, at least, to
be bound to the Internet TCP/IP. If you use TCP/IP on your local net you
will need to bind sharing to it. Do that and you have opened NetBIOS to
the outside world, unless you have a firewall.

If you do those things and don't have a firewall, then you are not safe.
If you have a firewall configured with the right rules, then you should
be.
-- 
John Underwood
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From: John Underwood <john@jsunderwood.demon.co.uk>
Subject: Re: "Shields UP!" - Port 139 & NetBIOS
Date: 2000/02/13
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