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Need help to remote desktop into my main PC.

I have a nice very powerful windows computer with 2 LAN cards. One of the LAN cards is setup directly to the modem with DHCP Enabled (currently - IP and Gateway of The computer is accessing the internet with no problem

The other LAN card is what I need help with. I have an 2 XP computers in other rooms I would like to use to simply remote desktop into my main computer (wired with hub) via my second LAN card.

How should I configure the second card on my main computer to be able to access it from RD on the XP...

I currently have this:
IP -
subnet -
Gateway -


It has been a few years since i have setup a network so I am a little rusty.

I can ping the main computer but cannot connect via RD... Not sure what is going on.
4 Solutions
Patrick BogersDatacenter platform engineer LindowsCommented:

2 questions, do you have RDP allowed on that box and b) what OS is on that machine?
ambantinAuthor Commented:
Yes RDP access Enabled
Windows 8.1 Pro
Patrick BogersDatacenter platform engineer LindowsCommented:
Ok, is port 3389 opened in the firewall? (what if you turn it of completely just to try?)

BTW: What error do you get?
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ambantinAuthor Commented:
ERROR: This computer can't connect to the remote computer

Not sure how to turn off firewall in 8.1
ambantinAuthor Commented:
OK.. firewall off... still no connection
You might need to go to the advanced settings for the firewall and specifically open the port for Remote Desktop. By default, that port number is 3389, no idea whether you might have changed it.

This is a decent visual example:


You only need to start from the portion first mentioning the firewall. If you look at the Inbound Rules, you need to make sure Remote Desktop shows up in there.
Davis McCarnOwnerCommented:
Unless you specifically open ports in your router/modem, RDP won't be accessable from outside your premises anyway so messing with the second NIC isn't really necessary......
But; what are the TCP/IP settings on the XP PC's?
And, the Win8 system must think it is a Work network; Home or Public will block access.
Use an empty gateway on the 2nd NIC.

On the Windows 8.1 box make sure you have not marked "Allow connections only from computers running Remote Desktop with Network Level Authentication", as I don't think the RDC client of XP is compatible with that. Make sure you have the user accounts enabled which you want to remote into, and they must also have a password.

On the XP box make sure you have the newest RDC client installed (all updates etc.).
ambantinAuthor Commented:
Not sure what happened but I removed anything that had to do with RDP security in Group Policy and now it works...lol
ambantinAuthor Commented:
It was the gateway as well...
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