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FreeBSD Security Archives: Re: GRE/IP 47/PPTP

Re: GRE/IP 47/PPTP


Bert Kellerman (bertkebellsouth.net)
Fri, 22 Oct 1999 04:36:57 +0000


You need to pass `-pptpalias <ipaddress>` on the command line. The ipaddress
that you specify will be the only client/server on the inside that will get
the type 47 packets. Check out the natd man page, it's all in there. AFAIK,
cisco has supported GRE tunneling since IOS 9.x.

Bert

"Dan Seafeldt, AZ.COM System Administrator" wrote:

> Will FreeBSD's /sbin/natd pass GRE IP packet type 47 as part of NT4.0 PPTP
> trust scenario? Seems run-o-the-mill SOHO routers in NAT mode fail in this
> capacity as they see TCP/UDP only? Although Cisco's latest IOS appears to
> handle it.
>
>
>
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This archive was generated by hypermail 2.0b3 on Thu Oct 21 1999 - 23:35:01 CDT