This is not quite true, firewalls will allow traffic in both directions as
well as between several different networks dependant upon how the rule base
is defined.
As for the original post, if your firewall is built and configured properly
by someone who knows what they are doing this should not pose any threat to
your company, as you can specify all sorts of parameters and limits in your
rules.
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, April 07, 1999 1:15 PM
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: RE: Netbios
FIREWALL PERMITS ONE WAY TRAFFIC. iF U ARE INSIDE THE FIREWALL, THEN YOU CAN
ACCESS THE FILES ON OTHER NETWORK IF PERMITTED BUT REVERSE IS NOT TRUE.
THEREFORE I DON'T THINK THERE WILL BE ANY SECURITY AS PER YOUR COMPANY'S
PLAN. MORE OVER YOU CAN DEFINE APPLICATION PORT TO BE MORE SPECIFIC.
Sanjeev Jha
> W
-----Original Message-----
From: pdmallya [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, April 07, 1999 9:19 AM
To: [EMAIL PROTECTED]
Subject: Netbios
Hi,
A department in my company wants to permit PC's in our network to access
files in machines on an external network using Netbios file-sharing. I'm
being told that this does not open any loopholes in our security, because:
(a) we can connect our network to the external one using a Checkpoint
Firewall, with a rule permitting NBT connections from our internal PCs to
the external machines containing the files. There will be no rule permitting
a reverse connection.
(b) there will be no shared disks on our network, and the Checkpoint rules
will enforce this.
(c) ergo, our network is not exposed in any way.
I am not quite convinced - can anyone give me some more information or
pointers on this?
TIA & Regards
Prabhakar D. Mallya
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