RE: ISA2004 - Routing Question

  • From: "Jim Harrison" <Jim@xxxxxxxxxxxx>
  • To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
  • Date: Mon, 23 Jan 2006 06:46:50 -0800

Q1 - What physical interface is connected to the routers; internal or
external? 

The fact that you've had to create the internal-to-internal rule
indicates a possible flaw in your basic routing definitions at the ISA.
See Q1.

--------------------------------------------
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
--------------------------------------------

-----Original Message-----
From: Steve Lunn [mailto:Steve.Lunn@xxxxxxxxxxxxxxxx] 
Sent: Monday, January 23, 2006 6:35 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] ISA2004 - Routing Question

http://www.ISAserver.org


I finally got around to installing ISA Server 2004 over the weekend, and
everything seems to be running okay but with one exception.

Out ISA server also acts as our default gateway, and it has two
persistent routes in it that point to two routers that connect to a pair
of point to point leased lines to two remote sites.

I've added the IP address ranges of the two remote sites to the Internal
interface of the ISA server.  In order for the routing to work I've had
to create a rule that allows all traffic between the internal interface
and the internal interface, which works up to a point, but some
connections are failing.

I've run the monitor and the traffic to the remote sites shows up as a
Denied Connection if I try and FTP, but ping gets through. I've tried
installing the firewall client, but the ftp connection fails, but then
works if I ping the destination first.

The denial doesn't have any rules associated with it, and the interfaces
both show up as internal, so where am I going wrong? Please Help?

Regards, 
Steve 
  
Steve Lunn 
Technical Support Technician - Microsoft MCP 

engage Mutual Assurance 
DDI: 01423 855101  Fax: 01423 855181 

 

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