http://www.systemengineers.de/ 2010-09-09T06:49:09+02:00 http://www.systemengineers.de/ http://www.systemengineers.de/lib/images/favicon.ico text/html 2009-09-12T12:46:12+02:00 http://www.systemengineers.de/vpn/ipsec/vpn-tunnel-gre-vs-ipsec?rev=1252752372 Generic Routing Encapsulation (GRE) Generic Routing Encapsulation (GRE), defined by RFC 2784, is a simple IP packet encapsulation protocol. GRE is used when IP packets need to be sent from one network to another, without being parsed or treated like IP packets by any intervening routers. text/html 2009-09-12T12:46:12+02:00 http://www.systemengineers.de/vpn/ipsec/windows-xp-to-openswan?rev=1252752372 This document describes how to get OpenSWAN working with various other IPSec stacks, including OpenSWAN and Windows 2000/XP. If you have any difficulties with this process, please e-mail the OpenSWAN mailing list. If you are using clients which benefit from receiving an IP address on the remote network (Windows, PocketPC, etc), you may want to consider L2TP over IPSec instead of the method described below.