PROTECTED]]
Sent: Monday, March 18, 2002 4:51 PM
To: Clint Goodwin; security-basics
Subject: RE: Help With firewall ports
Clint,
You're approaching this from the wrong angle... Don't look at what ports you
should block, look at the ports you need open. Open only those that are
necessary. Cl
>
To: "'Clint Goodwin'" <[EMAIL PROTECTED]>; "'security-basics'"
<[EMAIL PROTECTED]>
Sent: Monday, March 18, 2002 2:21 PM
Subject: RE: Help With firewall ports
> As a good practice, block all, and only open up the ones you need
> 80,2
i think the best way to go about this ..is to allow the services you need
and then block all the rest...!! i have a ORA book Building Internert
Firewall's if ya interested , i can send you a zipped up version of it.
Maybe that might help ya out :)
Ziggy
-Original Message-
From: [EMAIL PR
Clint,
Rather than trying to block a large number of ports I would recommend
blocking everything and opening only what is necessary for your site to use.
It's much easier to define the small number of ports you'll need to have
open and IMHO it's much better practice to deny everything that is not
On 17/03/02 20:16 +0930, Clint Goodwin wrote:
> Hi all,
>
> I was wondering what would be a good list of ports to block at my
> firewall.
> I have some of the most common ones covered , however I Don't have
I would say block everything, and then permit only the ones wanted.
> a lot of
Hi!
First of all, make design of your firewall. If it's high risky fw, I
recommend "default deny" approach. This means to block everything that comes
into your box (from WAN in) except to ports you explicitly allow. This leads
to modifieing rules every time you or any user needs to open another p
Here's a fairly complete listing of ports. But you shouldn't block specific ports
that you get
from a listing. You need to block ALL ports, and only allow in/out what you
specifically need.
http://www.securetips.com/tools/info/ports.asp
Cavell McDermott
Domino Admin
APW Ltd. - Texas Ca
Try this url on for size...
Jim
http://www.sans.org/newlook/resources/IDFAQ/oddports.htm
-Original Message-
From: Clint Goodwin [mailto:[EMAIL PROTECTED]]
Sent: Sunday, March 17, 2002 5:47 AM
To: security-basics
Subject: Help With firewall ports
Hi all,
I was wondering what wou
Clint,
You're approaching this from the wrong angle... Don't look at what ports you
should block, look at the ports you need open. Open only those that are
necessary. Close everything else.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf
Of Clint Goodwin
Se
Block everything in, allow all out.
Allow services that you are using and block all others.
If your firewall is linux based with ip tables let me know if you need any
help.
Regards
Kulla
- Original Message -
From: "Clint Goodwin" <[EMAIL PROTECTED]>
To: "security-basics" <[EMAIL PROTECT
Clint,
A better way to adminster a Firewall is to block all ports, and only allow
specific ports. It's much easier to list what you want, rather than what you
don't want.
Cheers,
Warren
-Original Message-
From: Clint Goodwin [mailto:[EMAIL PROTECTED]]
Sent: March 17, 2002 5:47 AM
To:
On Sun, Mar 17, 2002 at 08:16:31PM +0930, Clint Goodwin wrote:
> Hi all,
>
> I was wondering what would be a good list of ports to block at my
> firewall.
> I have some of the most common ones covered , however I Don't have
>
> a lot of experience with firewalls yet.
I think you have
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