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Remote Desktop

I set SOHO in our building : Lyncsis router, a printer and four PCs. I established the Remote Desktop connection with one of computers located in the other end of our building. Everything was fine. But when I tried to connect the Remote Desktop to my computer in my office from that remote one, I failed to do that.

I checked all settings on both PCs Firewalls, settings in the router's Firewall, checked both accounts have permissions to operate the Remote Desktop, but no matter what I tried I still cannot get the Remote Desktop connection from that computer. It works only in one direction. I use dynamic IP addressing in the router and double checked the addresses on both PCs.

Anyone can explain what's going on?
Updated - 11th Jan 2011

Answers (5)

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Lets see if I'm reading this correctly
You are attempting to reach a computer through a Router at your end and at the other end right?

If that's the case you need to establish a VPN between the 2 routers. wink

Col
11th Jan 2011

Replies

That's right - reaching one computer at one end and from that end trying to reach the original computer and I can't. But I have only one router.

Btw ,I tried the Remote assistance and it works fine both ways, but not the Remote Desktop. Do I still need VPN? Or this connection is not possible with just one router?
pentrex 11th Jan 2011
Not in that case.

I'll have a think on this and see what if anything I can come up with.

Col
OH Smeg 11th Jan 2011
0 Votes
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System versions?
What system versions do you have at both ends?
(For example Windows Home versions don't act as RDP servers, but can be a client)
11th Jan 2011

Replies

At both ends XP Professional. Suppose to work both ways but it doesn't. But the Remote Assistance, btw having the same port 3389 as RDP, works fine.
pentrex 12th Jan 2011
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Setting of Remote Desktop
In Windows XP Remote Desktop Connection is set to administrator with password.. try giving the user a permission to access remote desktop connection

In Computer Properties - Remote Tab
Allow user to connect remotely then select remote users. remote user must have password.
12th Jan 2011

Replies

Seems I tried this but will double check it again.
pentrex 12th Jan 2011
Just checked in the Local Users and Groups console both accounts. Both are set to the administrative group. Both are members of the Remote Desktop Users. The Remote Tab in the System Properties certainly is checked otherwise I would have no connection in the first place. But the problem still remains the same- from the computer 1 to computer 2the RDP works OK, from the computer 2 to 1 it doesn't. Message I got - "This computer can't connect to the remote computer. Try connecting again".

Just unexplainable puzzle what else might be wrong here?
pentrex 12th Jan 2011
You may need to look at it's configuration to fix this issue. wink

Col
OH Smeg 12th Jan 2011
Sounds like you have network authentication in your computer 1 check your local network connection in computer 1 try to un-check Enable IEEE 802.1x authentication in Authentication Tab.

windows xp sp3 with .net3.5 doesn't work well in RDP try removing that if you ever install xp sp3 and .net3.5 that may cause the issue.

and check terminal services for both computer if running in services console
-nhone- 12th Jan 2011
That exactly what I have - XP sp3 .net3.5 sp1, and .net3.0 sp2 installed on both computers.

I 'll check what you said.

What exactly do I need to remove? .net3.5 or sp3?
pentrex 13th Jan 2011
No, don't roll back sp3.
seanferd 13th Jan 2011
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Backup and Try the Simple First
Can you ping #1 from #2?

Are you using the IP or computer name in RDC?

Can you do a nslookup successfully? Tracert?

Don't skip the basics...you may find something obvious like a misconfiguration at the router/switch level.
17th Jan 2011

Replies

I use IP in RDC

Yes, I can ping from #1 to #2 and vice versa.

There is no problems with tracert either from both ends.

Nslookup gives the following output:

***Can't find server name for address 192.168.1.1: Non-existent domain
***Can't find server name for address 192.168.2.1: Non-existent domain
***Default servers are not available
Server: Unknown
Address: 192168.1.1
***Unknown can't find 192.168.1.103: Non-existent domain

It's the same output from both ends except the last line where address of the second PC is 192.168.1.100.

Is this looks like an error?
pentrex 19th Jan 2011
0 Votes
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RDP
Did u check the RDP port 3389, whether is opening or not. try doing
telnet remotemachinename 3389 --> from the command prompt.

http://serveradministrators.blogspot.com/
17th Jan 2011

Replies

I checked the 3389 port by using the Remote Assistance. Works fine from both ends.

Isn't this enough?
pentrex 19th Jan 2011
Say you have ip configured to static ex. 192.168.10.2 mask 255.255.255.0 gw 192.168.10.1 for pc1 and 192.168.10.3 mask 255.255.255.0 gw 192.168.10.1 for pc2

try access to rdp.. if you have different gateway make a routing point from default gw to destination
-nhone- 20th Jan 2011
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