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09-15-2002, 04:49 PM
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#1 |
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Member (5 bit)
Join Date: Aug 2002
Posts: 23
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remote assistance behind firewall
Does anyone know how i can connect to a computer with "remote assistance" if they are behind a firewall?
I am trying to help someone behind a linksys router firewall. I have the port forwarded to the correct IP address and in fact, i have no trouble connecting with remote desktop. But everytime we try to do the remote assistance, it says that "could not resolve IP address" or something. I tried forwarding it on port 3389 and 1723 and I have also tried putting it in the DMZ. Neither works. Is there something I am missing or is this just MS BS? Very frustrating. TIA -Zeqe |
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09-15-2002, 04:54 PM
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#2 |
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Member (9 bit)
Join Date: Sep 2002
Location: Chicago Burb's
Posts: 257
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Tough one you have there. I'm just wondering if the IP address may have changed since it may be Dynamic? And, can the end user disable the firewall temporaly?
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09-15-2002, 05:03 PM
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#3 |
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Member (5 bit)
Join Date: Aug 2002
Posts: 23
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no, its not the IP address. I have remote control of the router and checked and set up the forwarding before we begun.
right now I'm trying to just have him plug directly to the cable modem and screw the router for now. but i really want to get this going |
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09-15-2002, 05:18 PM
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#4 |
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Member (9 bit)
Join Date: Sep 2002
Location: Chicago Burb's
Posts: 257
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Please keep us posted with your results now that the router is out of the picture.
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09-15-2002, 05:54 PM
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#5 |
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Canadian Content
Premium Member
Join Date: Dec 1999
Location: Vancouver Island , BC, Canada
Posts: 1,594
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I am behind a linksys 4 port router and get assistance requests all the time. I have all ports closed right now and it still works.
FYI: I have read different port numbers in different places. One says 1389 and the other says 1398. HTH
__________________
The older I get, The better I was! |
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09-15-2002, 06:16 PM
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#6 |
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Member (9 bit)
Join Date: Sep 2002
Location: Chicago Burb's
Posts: 257
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What OS is the End User using?
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09-15-2002, 06:54 PM
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#7 |
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Canadian Content
Premium Member
Join Date: Dec 1999
Location: Vancouver Island , BC, Canada
Posts: 1,594
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I believe you have to have XP to use remote assisatnce.
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09-15-2002, 07:22 PM
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#8 |
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Member (9 bit)
Join Date: Sep 2002
Location: Chicago Burb's
Posts: 257
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If it is XP then the End User would need to grant permision for Remote Assistance. There is a box if I remeber correctly that needs to be checked off to allow others to to Assist Remotely. It has been a while since I've used XP, but I believe that option may be in the TCP/IP properties. I also found some info which I'll post below. This is from the Microsoft website.
Requirements for Using Offer Remote Assistance Both the novice and expert computers must be running Windows XP. The novice and expert users are members of the same domain, or are members of trusting domains. The expert must be a member of the local administrators group on the novice's computer. Both the novice and expert computers must be connected to the Internet, or the same LAN or WAN. Q308013 |
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09-17-2002, 06:44 AM
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#9 |
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Member (5 bit)
Join Date: Aug 2002
Posts: 23
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For the record, I am running Win XP Pro on both machines. I was the Expert (MS lingo for client) and my friend who was behind the firewall was the Novice (ms lingo for server). I was not behind a firewall.
When my friend connected to internet directly, ie he plugged his computer directly to the cable modem, we were able to connect without any problems. This means that the problem has to do with the firewall. I think the problem has to do with the fact that when the Novice sends out the invitation for remote assistance, his computer simply sends his local IP address as the address to connect to. Therefore, if it is on a LAN, its sends its LAN address and not the WAN address for the network. This would explain the error message "Could not resolve host address". But it seems a rather simple explanation for something that you would have expected Microsoft to consider. But on the other hand, I don't understand why MS would leave out options for more advanced users (e.g the ability for the Expert to initiate the connection, etc.). By the way, once we did finally connect it was great. Its a really fabulous tool for troubleshooting. And although XP is required for the Novice (or server), you are able to download the client software for Win 95 and up. Anymore ideas?? -Zeqe |
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09-17-2002, 08:23 AM
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#10 |
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Member (9 bit)
Join Date: Sep 2002
Location: Chicago Burb's
Posts: 257
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Thanks for keeping us posted. Your situation is an interesting one.
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09-17-2002, 12:55 PM
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#11 |
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Member (9 bit)
Join Date: Sep 2002
Location: Chicago Burb's
Posts: 257
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I was just reading a Smart Computing article and they state that you may want to enable WINS on a local computer for Remote Assistance.
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09-18-2002, 04:34 PM
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#12 |
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Member (11 bit)
Join Date: Jul 2002
Posts: 1,729
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Remote assistance does not support NAT. The linksys uses NAT therefore RA wont work behind firewall even with port forwarding. Even the DMZ wont allow you to connect. The only way is a direct connection where you are wide open.
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09-18-2002, 05:35 PM
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#13 |
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Canadian Content
Premium Member
Join Date: Dec 1999
Location: Vancouver Island , BC, Canada
Posts: 1,594
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Operating as the "expert" I have used Remote Assistance on many occasions. I am also behind a Linksys BEFSR41. I don't know how it would work going the other way.
It doesn't appear to make any difference whether I have the port forwarded or not! |
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09-20-2002, 06:29 AM
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#14 |
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Forum Administrator
Staff
Premium Member
Join Date: May 2000
Location: Joplin MO
Posts: 37,791
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If you have to get into someone's computer that's behind a NAT, try VNC. Have the person install the VNC server and forward the appropriate ports, then you can either run the client or use the java applet in your browser for a complete remote desktop.
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09-20-2002, 06:47 AM
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#15 |
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Member (5 bit)
Join Date: Aug 2002
Posts: 23
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glc, how do i install a VNC server? is it one of the optional components of xp?
-Zeqe |
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09-20-2002, 08:33 AM
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#16 |
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Forum Administrator
Staff
Premium Member
Join Date: May 2000
Location: Joplin MO
Posts: 37,791
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No, VNC is an open source cross platform remote control package.
http://www.uk.research.att.com/vnc/ It works like PCAnywhere but only over TCP/IP, you can't dial a modem with it and it has no file transfer capabilities. |
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