[Openswan Users] Openswan and Checkpoint VPN-1

[Benito Caracuel]

Hello,

I have to do a vpn connection between debian linux in my lan and checkpoint 
firewall in another network.
Now I have a Windows XP computer with VPN Secure Client Checkpoint.
To connect to checkpoint, I have an ip address, user and password.
I want to configure openswan in debian to connect to this firewall.
Is this possible?
How can I do this?
Some documentation?

Thank you very much.