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RDC Port Forwarding from public WAN IP (WAN Modem: SMB 8014) to LAN IP (Router: Cisco Valet Plus) to W2k3 Server.

Posted on 2010-08-12
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Last Modified: 2013-12-14
Trying to forward RDC (port 3389) through Comcast Business Gateway (SMB8014) to Cisco Valet Plus, and again from Cisco Valet Plus to my server. I have added a "forward a single port" on the Valet by entering the following settings into Applications & Gaming:

External Port: 3389, Internal Port: 3389, Protocol: TCP, To IP Address: 192.168.4.X (local server IP assigned by Cisco router)

I have my SMB set to the following in Port Forwarding:

App Name: Remote, Public: 3389, Private: 3389 ~ 3389, Protocol: TCP, IP Address: 10.1.10.X (local Cisco IP assigned by SMB router)

Comcast has already set up the Gateway to forward our static IP to the router (or so they say). The only difference I see is that they checked off "Disable Firewall for True Static IP Subnet Only" but this SMB router is completely foreign to me. Basically, I'm trying to remote into my static IP and have it go right to the server through the Valet. So far, no dice.

I can however connect to the server via RDC locally without a problem (using 192.168.4.x IP address of the server) but not with our public static IP which is the ultimate goal.

Any help would be greatly appreciated!

Any help would be greatly appreciated!
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Question by:hybridmoments82
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by:TechnicallyMaybe
ID: 33425491
Can you verify that the Valet's WAN address is the public IP assigned to you?  If it is not, then the Business Gateway is still in routed mode, not bridged.
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Author Comment

by:hybridmoments82
ID: 33425505
No. The address of the Valet is an assigned address by the SMB (10.1.10.X).
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by:hybridmoments82
ID: 33425511
How do I set the SMB to bridged mode?
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TechnicallyMaybe earned 500 total points
ID: 33425561
Most likely the Comcast device is controlled by Comcast and they won't give you access.
When they put it in bridged mode, all it does it pass traffic as though it is invisible.  The public IP will be assigned to the WAN port of the Cisco Valet.  Then the port mapping will work.
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Author Comment

by:hybridmoments82
ID: 33425603
Apparently, the SMB wasn't in "bridged" mode. Had to look up how to set it in bridged mode. All is working perfectly now. Thanks!
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Author Closing Comment

by:hybridmoments82
ID: 33425607
Nice!
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Expert Comment

by:TechnicallyMaybe
ID: 33425825
Glad to help!
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