Server in the DMZ

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Microsoft Windows
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We recently replaced a server in the DMZ used to route inbound email. The new server is Server 2003 standard edition. The old one was server 2000 standard. Everything on the new server is the same as the old one as far as server name, IP address, default gateway. My question is can anyone tell me why the new server is unable to access the internet? The old one had no problem doing so. What do I need to check? Your input is valued, thank you

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Thanks. We'll let you know when a new response is added.

What do you mean by ?My question is can anyone tell me why the new server is unable to access the internet?? Do you mean that Internet Explorer does not open web pages?

Have you tried to ping an IP address? Try pinging 4.2.2.2. If you can ping to this IP address; then you have access to the internet. If ping to an IP address works, try pinging yahoo.com to verify DNS.

Let us know your results.
dmw

Discuss This Question: 4  Replies

 
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  • Technochic
    Actually I found the problem. With the server in the DMZ, it could not use our internal DNS servers of course, and I found out it could not use our external DNS servers either, because we have them set to not allow queries. So my options were then to use a public DNS server we had no control over, or set this server up as it's own DNS. My Supervisor said to set it up as a DNS server, like the last one was. That was my first suspicion as to what the problem was, but I could not explain why. Now I know why and therefore have a better understanding of it all.
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  • Calixtoht
    You could also set up a rule in your firewal to permit this server in the DMZ to have access to your internal device where you have the DNS.
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  • Technochic
    The only problem with that, (and I did think of that) is that the internal DNS server is for internal name resolution only. I needed to get out to microsoft to install security patches. We are in the process of implementing a patch solution, but I needed to get this done now. Thanks for the suggestion though. :-)
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  • Jrodezno
    Try to use your ISP DNS server.
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