External Remote Access to Server 2012

Tom Wie
Tom Wie used Ask the Experts™
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I have an SBS 2008 Domain.  I have added an additional server.  Internally, I can access the new server via RDC.  When attempting to access the new server from outside the network it will not connect.  In my firewall/router I have redirected terminal services pointing to the public static IP address of the new server to the private IP address of the server and kept the 3389 port (for now).  Will not connect.

What am I missing????
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Mustafa L. McLinnSystems Engineer/Systems Administrator

Commented:
Make sure you've enabled forwarding 3389 for both TCP and UDP.

Author

Commented:
Using SonicWALL Terminal Service definition.  Regrettably, it includes TCP and UDP.  I wish it had been that easy!
Derek SouterITO Svc Delivery Cons III

Commented:
you say that you have redirected RDP from the Static external IP address of the new server to the internal address of the new server - does that mean that you have multiple external IP addresses?   that would be unusual (but not impossible).

can you still RDP to the original server?

I would usually use port forwarding and use a non-standard port and forward to the RDP port on the various servers

for example, forward TCP and UDP port 10000 to server 1, port 3389.    forward 10009 to server 2, port 3389

that way, you are always using the same IP address/dns name to connect to your network - and you simply enter the port number in the connection settings   (myexternaldomain.com:10000  or myexternaldoamin:10009)
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Author

Commented:
Actually, I do have multiple external IP addresses.  The additional server is for a LOB app that required an exclusive server and I had a spare external IP address to use for it.  When trying to isolate the issue, I have tested the process to internal workstation IPs which worked, but not to this Server.....Yes, I did hit the checkbox to allow access to this server!

Tom
Distinguished Expert 2018

Commented:
Did you use the Wizard or do things manually?
Derek SouterITO Svc Delivery Cons III

Commented:
I will assume that you have the correct default gateway settings on the new server.

two things to test

1 - try setting up the 2nd external IP address to access the original server (as you know that should work) - although you say you have tested to a workstation IP, so that should actually work
2 - try forwarding the original external IP address to the new server (or better, forward a different port on the original IP to 3389 on the new server)
Commented:
While reviewing the settings in preparation to try your suggestions I discovered the issue.  OIE!  Operator Induced Error.  I had transposed two numbers.  When set correctly, this vexing problem has been resolved.  My apologies as I kept 'seeing' the numbers that I thought I put in, rather than 'seeing' the numbers that were actually there.
Derek SouterITO Svc Delivery Cons III

Commented:
we've all been there - generally after a 14 hour day, when this absolutely must work right now...................................   :)
Seth SimmonsSr. Systems Administrator

Commented:
No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

Accept: Wings1 (https:#a42431618)

If you feel this question should be closed differently, post an objection and the moderators will review all objections and close it as they feel fit. If no one objects, this question will be closed automatically the way described above.

seth2740
Experts-Exchange Cleanup Volunteer

Author

Commented:
Seth,

I had accepted a solution and thought the issue had been closed.  Not sure how to do that from here, but if you need to close it, please do.

Tom

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