Remote desktop only working with one pc

I don't think this is a MS issue but I've tried everywhere and everything
else.
I need to remotely access computers at work for troubleshooting.

They are behind a dsl modem (with a static WAN IP) and then behind a NAT
router.

I have five machines, each with a static IP, each has been setup to use and
allow remote desktop connections all using different RDP ports (ie 3391,
3392, 3393, etc). On the router, all ports have been forwarded to the
respective IP's, ie: port 3391 gets forwarded to 192.168.1.3 port 3391.
Windows firewall has also been turned off on all machines and there isn't any
other firewall programs running.

So a remote desktop logon looks like this:

internetIPofRemotePC:339x


So here is the problem, I can only connect remotely to one computer, when
trying to connect to the other machines (not at the same time) I get an
unable to connect error. All settings are the same on each computer.

I can however connect to each computer locally when connected to the lan. So
that tells me that remote desktop is working properly but either the router
or the modem is configured incorrectly.

When I connect internally I can connect using the IP of the lan machine or
it's computer name both followed by the unique RDP port,

If it matters, the dsl modem is a netopia 3546 002 and the router is a
linksys wrt51ag.


Any ideas?

Well, if you can connect to each PC over the local LAN from another PC on
the local LAN then it comes down to a port forwarding issue with the router
or the DSL modem. You can run the http://www.canyouseeme.org test from each
PC. If the test fails then you need to resolve the port forwarding issue.
You can isolate further by removing the router and connecting each PC
individually to the modem. If the test still fails then its an issue with
the DSL modem. Some DSL modems also act as routers so you would need to
figure out how to forward ports through the modem...

--

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...

"ivwshane" <ivwshane@discussions.microsoft.com> wrote in message
news:15C3EF93-94BE-4DBB-9A0B-F4CFDABD530B@microsoft.com...
> I don't think this is a MS issue but I've tried everywhere and everything
> else.
> I need to remotely access computers at work for troubleshooting.
>
> They are behind a dsl modem (with a static WAN IP) and then behind a NAT
> router.
>
> I have five machines, each with a static IP, each has been setup to use
> and
> allow remote desktop connections all using different RDP ports (ie 3391,
> 3392, 3393, etc). On the router, all ports have been forwarded to the
> respective IP's, ie: port 3391 gets forwarded to 192.168.1.3 port 3391.
> Windows firewall has also been turned off on all machines and there isn't
> any
> other firewall programs running.
>
> So a remote desktop logon looks like this:
>
> internetIPofRemotePC:339x
>
>
> So here is the problem, I can only connect remotely to one computer, when
> trying to connect to the other machines (not at the same time) I get an
> unable to connect error. All settings are the same on each computer.
>
> I can however connect to each computer locally when connected to the lan.
> So
> that tells me that remote desktop is working properly but either the
> router
> or the modem is configured incorrectly.
>
> When I connect internally I can connect using the IP of the lan machine or
> it's computer name both followed by the unique RDP port,
>
> If it matters, the dsl modem is a netopia 3546 002 and the router is a
> linksys wrt51ag.
>
>
> Any ideas?

I thought your post looked familiar...:-)

http://www.broadbandreports.com/forum/remark,14848651

--

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...

"Sooner Al [MVP]" <SoonerAl@somewhere.net.invalid> wrote in message
news:OOT82ro7FHA.1032@TK2MSFTNGP11.phx.gbl...
> Well, if you can connect to each PC over the local LAN from another PC on
> the local LAN then it comes down to a port forwarding issue with the
> router or the DSL modem. You can run the http://www.canyouseeme.org test
> from each PC. If the test fails then you need to resolve the port
> forwarding issue. You can isolate further by removing the router and
> connecting each PC individually to the modem. If the test still fails then
> its an issue with the DSL modem. Some DSL modems also act as routers so
> you would need to figure out how to forward ports through the modem...
>
> --
>
> 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...
>
> "ivwshane" <ivwshane@discussions.microsoft.com> wrote in message
> news:15C3EF93-94BE-4DBB-9A0B-F4CFDABD530B@microsoft.com...
>> I don't think this is a MS issue but I've tried everywhere and everything
>> else.
>> I need to remotely access computers at work for troubleshooting.
>>
>> They are behind a dsl modem (with a static WAN IP) and then behind a NAT
>> router.
>>
>> I have five machines, each with a static IP, each has been setup to use
>> and
>> allow remote desktop connections all using different RDP ports (ie 3391,
>> 3392, 3393, etc). On the router, all ports have been forwarded to the
>> respective IP's, ie: port 3391 gets forwarded to 192.168.1.3 port 3391.
>> Windows firewall has also been turned off on all machines and there isn't
>> any
>> other firewall programs running.
>>
>> So a remote desktop logon looks like this:
>>
>> internetIPofRemotePC:339x
>>
>>
>> So here is the problem, I can only connect remotely to one computer, when
>> trying to connect to the other machines (not at the same time) I get an
>> unable to connect error. All settings are the same on each computer.
>>
>> I can however connect to each computer locally when connected to the lan.
>> So
>> that tells me that remote desktop is working properly but either the
>> router
>> or the modem is configured incorrectly.
>>
>> When I connect internally I can connect using the IP of the lan machine
>> or
>> it's computer name both followed by the unique RDP port,
>>
>> If it matters, the dsl modem is a netopia 3546 002 and the router is a
>> linksys wrt51ag.
>>
>>
>> Any ideas?
>
>

So it turns out that it was a microsoft issue:|

Unfortunately I couldn't pin point exactly what it was so I just formatted
and reinstalled windows XP, disabled the firewall, changed the rpd ports and
all is working now


To be fair though, I wasn't the one that originally installed windows so it
could have been something the original installer did or something caused the
malfunction like another piece of software.

Either way I'm happy now