Problem with one XP workstation connecting to SBS2K3 Prem

[Jim Graue]

Hi, All:

We have a SBS to which we connect remotely using
https://ourdomain.com/remote. One XP Pro SP2 (entirely updated) laptop has a
problem connecting via RWW (Remote Web Workplace). The user can logon, but
when he tries to connect to either on-site computers or the on-site terminal
server, a message is displayed:
---
vbscript error: remote desktop connection
An invalid server name was specified
---
Laptop can connect via RDP when on the LAN. User can use another
workstation (or, say, home system) for RWW connection. It's just this laptop
that has an issue. I think it might have something to do with ActiveX
controls in IE 6. If anyone has any insights or suggestions, I'd really
appreciate the help.

 

[Robert L. \(MS-MVP\)]

Make sure the computer doesn't have firewall or security software blocking
port 4125 or modify the MTU. This search result may help. Please post back
with the result.

VBScript: Remote Desktop DisconnectedA network error might have occurred
while establishing the connection. - The RWW designated port might be block
by a firewall. 2. VBScript: Remote Desktop ...
www.chicagotech.net/sbs/rwwvbscript11.htm


--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com

 

[Jim Graue]

Hello, Bob:


My replies/comments are in-line, below:

Make sure the computer doesn't have firewall or security software blocking
port 4125 or modify the MTU. This search result may help. Please post back
with the result.

As the system sits behind a hardware firewall when it is remote, I've turned
down its third-party firewall software to no avail. I would also point out
that other systems (desktop computers) at the same remote location are using
the same third-party firewall software and are entirely able to connect via
RWW. May I ask (without sounding incredibly stupid) how I would know whether
the MTU were modified?

 

[Robert L. \(MS-MVP\)]

These how to may help.
How to change mtu
By default, Windows Server 2003, 2000 and XP use a fixed maximum
transmission unit (MTU) size of 1500 bytes for all PPP connections and use a
fixed MTU size ...
www.howtonetworking.com/VPN/mtu1.htm - Similar pages

How to determine the optimal MTU
In a case you may need to modify the MTU size and wonder how to
determine the optimal MTU for your system. You can use ping command to do
so, for example, ...
www.howtonetworking.com/VPN/mtu4.htm - Similar pages

How to change mtu
To modify the MTU settings for VPN connections, you need to add the
ProtocolType DWORD value, the PPPProtocolType DWORD value, and the TunnelMTU
DWORD value ...
www.howtonetworking.com/VPN/mtu3.htm


--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com

 

[Jim Graue]

Hello, Bob:

Thanks for the links.

--
Best regards,

Jim Graue

These how to may help.
How to change mtu
By default, Windows Server 2003, 2000 and XP use a fixed maximum
transmission unit (MTU) size of 1500 bytes for all PPP connections and use a
fixed MTU size ...
www.howtonetworking.com/VPN/mtu1.htm - Similar pages

How to determine the optimal MTU
In a case you may need to modify the MTU size and wonder how to
determine the optimal MTU for your system. You can use ping command to do
so, for example, ...
www.howtonetworking.com/VPN/mtu4.htm - Similar pages

How to change mtu
To modify the MTU settings for VPN connections, you need to add the
ProtocolType DWORD value, the PPPProtocolType DWORD value, and the TunnelMTU
DWORD value ...
www.howtonetworking.com/VPN/mtu3.htm


--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com