• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 312
  • Last Modified:

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 TTL expired in transit.
Reply from TTL expired in transit.
Reply from 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?

1 Solution
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.
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.
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.


Featured Post

Prepare for your VMware VCP6-DCV exam.

Josh Coen and Jason Langer have prepared the latest edition of VCP study guide. Both authors have been working in the IT field for more than a decade, and both hold VMware certifications. This 163-page guide covers all 10 of the exam blueprint sections.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now