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Static IP Address and Mail Server Woes

I have the following

Exchange 2003/ ISA 2004 / Linksys Router / DSL Modem
My ISP gave me 2 static IP addresses
I configured the DSL Modem with this Static IP
Then I configured the Router with the second static IP
The ISA Server is acquiring a dynamic address from the router.

Now whenever I ping the static IP of the router, I get the following error
Reply from 196.3.140.234: TTL expired in transit.
Reply from 196.3.140.234: TTL expired in transit.
Reply from 196.3.140.233: TTL expired in transit.

Can I continue and set the public dns server to point to my mailserver for mail, or would this issue above cause any problems?


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Christian_Agard
Asked:
Christian_Agard
1 Solution
 
ajj1Commented:
why is the router using the 2nd public IP?

I take it the modem is hanging off the router? in which case use the public ip on the router and then also utilise a private static for ISA to another private static to exchange. that should eliminate the TTL expired.

OR are you trying for a DMZ scenario? with modem public facing then sitting ISA in the DMZ (not the preferred way anymore) then the router with some natting of adresses to the internal network.
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Christian_AgardAuthor Commented:
No I have the Modem with a public IP, the Router with a public IP
The Router giving the ISA an IP and the ISA is connected to the internal network.

Will mail work in a situation like this where the ping requests are timing out like the above.
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SembeeCommented:
If you bypass the ISA server, what happens then?

You have too much in the way at the moment to accurately diagnose where the problem is.

Simon.
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