I'm working on CentOS 4.5 virtual image on Windows XP host OS. From inside the image, I can connect to VPN (with my .pcf file) using a Cisco VPN client for Linux. By default, in my pcf file the value for TunnelingMode is 0 (which means it's a UDP based connection).
The problem with UDP is that the VPN connection is terminated every 2 mins with the message "Remote peer is no longer responding". I have to reconnect again. Sometimes, I'm even maintaining a ping session (after the VPN is connected), so that the VPN connection is not terminated. But even this doesn't work.
So I changed the TunnelingMode=1 (which is for TCP), I get the following message on connecting to VPN
$ vpnclinet connect
"Secure VPN Connection terminated locally by the Client
Reason: Remote peer is no longer responding.
Disconnecting the VPN connection"
Can any one let me know why a TCP VPN connection is failing in Linux
Note: I can connect to VPN with TCP enabled on my Host OS (Windows XP). The problem is only with Linux (rather CentOS)
Thanks in advance,
Krishna
Unable to connect to VPN using TCP protocol
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