RE: Firewall Policy Rules Order
- From: Jim Harrison <jim@xxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Tue, 05 Oct 2004 22:56:05 -0700
Again, that's incorrect; absolutely, positively pay attention to the rule order.
"The effective permissions" are determined by rule order more than any other
factor.
You ignore this fact at your own risk.
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
On Tue, 5 Oct 2004 22:09:06 -0400
"Ara Avvali" <ara@xxxxxxxxxx> wrote:
http://www.ISAserver.org
Of course it does. Order of rules makes the passing rule from one to other
but what I mean we should look at the result not the way it is set
What I meant was to pay attention to result not to rules it self
-----Original Message-----
From: Jim Harrison [mailto:jim@xxxxxxxxxxxx]
Sent: October 5, 2004 12:47 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Firewall Policy Rules Order
http://www.ISAserver.org
That statement is absolutely, blatantly incorrect.
Rule order is very much important.
For instance, if you have a rule that allows anonymous SMTP for your mail
server that follows a rule allowing HTTP for authenticated
users, the mail server will fail at the HTTP rule.
Generally speaking, you want to order your rules as:
Anonymous Deny rules
Anonymous Allow rules
User-based Deny rules
User-based Allow rules
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
----- Original Message -----
From: "Ara Avvali" <ara@xxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Monday, October 04, 2004 04:59
Subject: [isalist] RE: Firewall Policy Rules Order
http://www.ISAserver.org
Hi
Add rules based on group or ip address to it. Also as far as I know it
doesn't matter what order they are; it matters to see what will be the
effective permissions
-----Original Message-----
From: Raji Arulambalam [mailto:RajiA@xxxxxxxxxxxxxx]
Sent: October 4, 2004 12:28 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] Firewall Policy Rules Order
http://www.ISAserver.org
Hi
I know that the rules are executed top down, but what is best practice in
grouping the rules in Firewall Policy
1) Outgoing Access rules
2) Incoming Access rules
3) Web Server Publish
4) Mail Server
5) Server Publish
Thanks
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