Date: Wed, 16 Dec 1998 10:13:00 -0700 (MST) From: James Snow <sno@flesh.net> To: freebsd-hackers@FreeBSD.ORG Subject: Tunneling GRE through NAT? Message-ID: <Pine.BSF.3.96.981216094321.2841A-100000@silver.teardrop.org>
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I'm writing here because of what I found via the mailing list search at www.freebsd.org: -- On Wed, 1 Apr 1998, M.C Wong wrote: > I wonder if there is any implementation, user-land or kernel, of > tunneling protocol based on GRE (rfc1701, rfc1702) ? I remember some rumblings in -hackers about someone implementing a generic tunnelling system. I think a GRE tunnel was part of the inspiration for the project. Check the mail archives for info. Doug White | University of Oregon Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant http://gladstone.uoregon.edu/~dwhite | Computer Science Major -- Did this go anywhere? I have a number of Windows users who'd like to be able to access some WindowsNT based services using Microsoft's PPTP. As it stands, the WindowsNT machine is behind a FreeBSD machine running natd which is in turn behind a Cisco which acts as a firewall. I can pass PPTP packets (port 1723) through to the FreeBSD machine and I can pass the GRE packets associated with PPTP through to the FreeBSD machine. I can then tunnel the PPTP packets through natd to the NT box, but I haven't found any way to tunnel GRE through the NAT. Did this discussion of tunneling GRE through NAT ever go anywhere? Has anyone written any software that does this? Is there any reason why this would not be possible? (i.e., any reason why I shouldn't just pick up my network programming book and write it myself?) Any help is much appreciated. James Snow * * * * * * * * * * * * * * * * * * * * * * * * * * * * * We live in the short term | sno at teardrop dot org * * and hope for the best. | I am Geek. Hear me ^G * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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