How do I enable routing through ISA Server??????

Posted on 2005-04-27
Last Modified: 2013-11-16

I'm new to ISA server but here's what I've got.  

Internet - linksys router - Server 2003 with ISA (with 2 nic cards) - second nic card goes to switch - network pc's.  

Where do I begin to configure 2nd nic card to "pass" internet signal to pc's on the "inside"?

I tried routing and remote access in windows but something tells me I can do it through ISA.  I followed the wizard in ISA but I saw nothing about nic card configuration.

Can anybody give me a "crash course" in basic ISA set-up?

thanks to all....

Question by:cyoung3000
    LVL 1

    Expert Comment

    Not sure if this link covers what you want to do, but the site should have some info on there somewhere....
    LVL 2

    Accepted Solution

    The Nic plugged into the router is External and the NIC plugged into the Switch is Internal. ISA is completely rule based. If you create a rule it will happen. If you do not create a rulke it will not happen. If you are just starting out, in the firewall config, under configuration go into networks. Make sure that this is set up correctly. Internal should contain your ip address range. Once this seems to be all set up correctly create al rule to allow all outbound protocols from Internal to external. This should work. If this does work remove the rule as it is not a good on to keep in place and start creating other rules with what you want to do. It took me a while and a call to Microsoft before it all started to click in about the rules. Try this and let us know if it worked.

    Author Comment

    Thanks for the post.  I'm reading the link you sent and that too is very helpful.  I'm not sure how much of that applies to ISA 2000 which is what I'm using.  I'm going to check out this configuration tonight and will likely be asking you a question or two regarding configuration.  


    Author Comment

    This message is for UnifiedIT.....

    thanks for the post....Your answer was kinda vague but it inspired me to investigate further.... and I found a site that explained EXACLTY what I was looking had actual facts with numbers and stuff.....I'm including a link that you'll probably like...

    thanks again

    LVL 2

    Expert Comment

    I am sure that it was vague. I thought that you were using ISA 2004. I have never used 2000 but I know that it is different form 2004. Glad that you got it working.

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