We're about to begin replacing Linux boxes doing Lan-to-Lan connections with PPTP. We'll be putting a 1710 (12.2(13)T) router as the center and 831 routers at remote offices. The question is if it's possible to setup a Linux-to-1710 PPTP Lan-to-Lan configuration to continue giving connection to remote offices with linux boxes during the transition.
I've configured a 1710 for remote users using PPTP, but never for Lan-to-Lan, so that's why I'm asking.
In PPTP there really is no concept of a LAN-to-LAN tunnel like there is in IPSec. PPTP is a client-server protocol, so the Linux boxes must be doing something weird and connecting to each other but then allowing other devices behind them to use that connection also (sort of like Internet Connection Sharing).
The 1710 certainly won't do a L2L PPTP tunnel, cause as I mentioned there's really no such thing. If the Linux devices are connecting in as a PPTP client and then allowing other devices behind them to use that tunnel, then it should work OK. The config on the router is no different to what you would have already set up for PPTP remote users, it really depends on whether the Linux device connects in as a true PPTP client as to whether the router will accept the connection or not.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
[toc:faq]Introduction:This document describes details on how NAT-T
works.Background:ESP encrypts all critical information, encapsulating
the entire inner TCP/UDP datagram within an ESP header. ESP is an IP
protocol in the same sense that TCP and UDP are I...