Re: Change RDP Port in XP Firewall
From: Bill Sanderson (Bill_Sanderson_at_msn.com.plugh.org)
Date: 11/29/04
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Date: Mon, 29 Nov 2004 18:15:44 -0500
Well, that makes two of us that did that bit of homework!
(yeah--it all worked as expected for me, too--with one minor exception:
mstsc 192.168.1.28:3390 <enter> failed, whereas mstsc <enter>
192.168.1.28:3390 <enter> worked properly. This is probably a bug.)
"Sooner Al" <SoonerAl@somewhere.net.invalid> wrote in message
news:unCT3FU1EHA.936@TK2MSFTNGP12.phx.gbl...
>I just tried this on my XP Pro SP2 test machine and it worked... I did the
>following...
>
> 1. Changed the listening port in the registry to 3390 and *REBOOTED* the
> machine.
> 2. Configured the Windows Firewall Exceptions to...
>
> Disable the default Remote Desktop setting (made sure its *UNCHECKED*).
> Added and Exception named RDP-3390, TCP Port 3390 (and made sure its
> *CHECKED*).
>
> 3. Successfully accessed the XP Pro SP2 machine using Remote Desktop from
> an XP Home SP2 machine over my local LAN.
>
> The first time I tried this I made a typo when I was configuring the
> Windows Firewall for the new exception. I typed a port number of 339
> versus the correct 3390. This resulted in a failure, obviously what you
> would expect. Once I corrected that I successfully connected to the XP Pro
> box, using the new port, from my XP Home box.
>
> So...
>
> A. Did you reboot the PC in question after making the listening port
> change?
>
> http://support.microsoft.com/default.aspx?scid=kb;en-us;Q306759
>
> B. Did you verify, after rebooting, the PC is actually listening on TCP
> Port 3390. Use the "netstat /a" command for that. See this page, near the
> end, for an example of the use of this command. Note in the example the
> normal TCP Port 3389 is illustrated...
>
> http://theillustratednetwork.mvps.org/RemoteDesktop/RemoteDesktopSetupandTroubleshooting.html
>
> C. Did you verify that the default selection for Remote Desktop, TCP Port
> 3389, is in fact UNCHECKED in the Windows Firewall Exception
> configuration?
> D. Did you verify the correct new port Exception was correctly configured
> in the Windows Firewall Exception configuration?
> E. Did you verify the new port is actually open by running the telnet test
> over your local LAN from another local PC?
>
> http://support.microsoft.com/default.aspx?scid=kb;en-us;Q187628
>
> Use the syntax
>
> telnet LAN_IP_Address 3390
>
> If Step E works, then call the target PC from another local PC over the
> local LAN with Remote Desktop using the syntax...
>
> LAN_IP_Address:3390
>
> http://support.microsoft.com/default.aspx?scid=kb;en-us;Q304304
>
> If Step E does not work through the Windows Firewall and after verifying
> the settings then...
>
> How did you install SP2, ie. from the Windows Update site or an ISO image
> that you downloaded from MS? In my case I downloaded an ISO image, created
> a CD and installed SP2 on my two home XP machines (one XP Pro and one XP
> Home).
>
> Any other personal firewall software running on the PC that may be causing
> a problem?
>
> --
> Al Jarvi (MS-MVP Windows Networking)
>
> Please post *ALL* questions and replies to the news group for the mutual
> benefit of all of us...
> The MS-MVP Program - http://mvp.support.microsoft.com
> This posting is provided "AS IS" with no warranties, and confers no
> rights...
>
> "Guruuno" <guruuno@hotmail.com> wrote in message
> news:96b501c4d4e0$65901240$a401280a@phx.gbl...
>>I need to do modify the firewall settings for RDP
>> to allow Port 3390, not 3389 in the Windows XP (SP2)
>> firewall. Can this be done?
>>
>> I have already modified the registry in a remote PC to
>> allow access to port 3390 (the listening port), but it
>> appears that the built in firewall in XP with the
>> designated field for Remote Desktop has Port 3389 by
>> default, and the port cannot be modified.
>>
>> If I add a NEW port to the firewall rule (RDP-3390) and
>> check it, the remote access attempt via RDP does not work.
>> If I turn off the firewall in XP, it works.
>>
>> Port forwarding in a Linksys router is set to forward port
>> 3390 to the machine in question (with a fixed IP of
>> 192.168.1.100), the DHCP pool is outside the range of the
>> fixed IP's in the network, and all other relevant settings
>> are turned on in the XP box in question (as referenced,
>> questioned, replied to and verified in a previous post here).
>>
>> What am I missing or what do I need to do (I do not want to
>> turn off the firewall)?
>>
>> I am starting a new thread since it appears the old one has
>> died, either because it is nested deep inside the original
>> starting thread and as I have seen, if some 'readers' may
>> bypass replies, etc., depending on the habits of the end
>> user and the Newsgroup reader they are using, and also, as
>> it seems that nobody has answerd my last inquiries (or at
>> least attempted to contribute information to potentially
>> resolve the issues), I felt it might be prudent to start
>> all over again.
>
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