Unable to connect using Connect Tunnel Client on Vista.
03/26/2020 8 13470
DESCRIPTION: Unable to connect using Connect Tunnel Client on Vista.
SonicWall support has found issues where Connect Tunnel Connection from a Vista machine fails if Windows Personal Firewall is enabled.
A snippet of ngutil log during the problem is copied below:
09:36:15.511 I Establishing connection to tunnel 126.96.36.199:443 I 09:36:15.527 Interface 188.8.131.52 selected for 184.108.40.206 destination, source 0.0.0.0 I 09:36:15.527 Interface 220.127.116.11, 'GlobeTrotter Module HSxPA - Network Interface', speed 7200000 09:36:15.527 VPN Set I Accept from state to Connecting, reason 00000000 09:36:15.527 The VPN I Processing state transition, from Connecting to Accept, reason 0x00000000 09:36:15.652 VPN I set state from Connecting to Connected, reason 00000000 I 09:36:15.652 tunnel connection 127.0.0.1:49509 -> 18.104.22.168:443 completed, status 0x00000000 09:36:15.652 I RAS closed pipe 09:36:15.652 The VPN I Processing state transition, from Connecting to Connected, reason 0x00000000 E 09:36:15.652 The VPN service manager reported an error. 0x000004CF Error: The network drive is unavailable. For more information on the resolution of Network problems, see Windows Help. I set 09:36:15.652 tunnel state from Connecting to Closed I closed 09:36:15.652 Tunnel 09:36:15.652 I signal the user that the tunnel has closed 09:36:15.652 I signal the user that the call has completed 09:36:15.652 I Error (1073807372): VcTunnelOpenComplete failed, 09:36:15.667 Closing communication pipe I (07120999-8F25-4D17-8893-0A62FC9ED959) with the VPN Manager service.
This is not applicable for all the Windows Vista Notebook users, even in my Vista it works fine, only with few customers new laptops they faced this issue, if we disable personal firewall we are able to establish CT, that was the reason I have given the following steps to resolve this issue without disabling the personal firewall.
To workaround this problem we need to add an exception for Aventail Connect Tunnel in the Firewall:
Under Control PanelGoto firewall settings and click change settings :
Under Exceptions create an exception by going to Add program and specify the complete path for ngvpnmgr.exe: C:windowssystem32ngvpnmgr.exe OR
Click on Add port and give the name as Aventail VPN connection and specify port number 443 as shown in screenshots below: