[Openswan Users] L2TP/IPSec Windows XP Connected but no Traffic

[Paul Wouters]

On Fri, 17 Nov 2006, Peter McGill wrote:

> I setup a L2TP/IPSec X.509 connection from my Windows XP Home laptop,
> to my Linux 2.4.31 Openswan 2.4.6 xl2tpd 1.1.05 office server.
>
> When I ping the private ip of the office server from the laptop, with the connection
> up, using tcpdump on the server, I can see the pings coming and going on the,
> ppp0 interface, and the l2tp packets on the ipsec0 interface, and the esp packets
> on the eth1 (my public) interface. So everything in the linux server appears to be
> fine.
>
> The windows firewall is disabled, however I'm still not receiving any responses back.
> So windows is obviously sending through the vpn ok, but not receiving properly.
> Any suggestions? I'm stumped.

Do your ping tagets know about the l2tp IP address pool and how to reach it?

This is mostly a problem if your l2tp server is not the default gateway of
your office lan that contains the l2tp IP range.

Paul