id	summary	reporter	owner	description	type	status	component	version	resolution	keywords	cc	guest	host
1756	Outbound VPN PPTP connections fail	lid		"I have tried to create an outbound VPN PPTP connection to a remote server on both a Ubuntu (Hardy Heron) guest and Windows (SP3) guest. On Ubuntu, this fails with
{{{
LCP: timeout sending Config-Requests
}}}
[http://pptpclient.sourceforge.net/howto-diagnosis.phtml#client_no_gre_rx PPTPclient diagnosis page][[BR]]

On Windows XP, this fails with 
{{{
Error 619: A connection to the remote computer could not be established, so the port used for this connection was closed.
}}}

This host is able to connect to the VPN server.

It appears that this is due to the Virtualbox's inability to pass GRE packets through its NAT. See these forum threads for more: [http://forums.virtualbox.org/viewtopic.php?t=2918 1] [http://forums.virtualbox.org/viewtopic.php?t=4755&sid=831cec236c4f5f0dc0d7334461f77595 2]"	defect	closed	other	VirtualBox 1.6.2	duplicate	vpn pptp nat gre		other	other