[pptp-server] pptpd questions/info newbie...

Dean A. Roman droman at romansys.com
Sun Oct 7 13:20:42 CDT 2001

Martin Feeney wrote:

> On Thu, 04 Oct 2001 11:51:56 Dean Roman wrote:
> > 1) Will PPTP work with the win2k clients behind NAT'd firewalls (like a
> > cable modem running NAT)?
> This is your biggest problem - probably not unless you can port forward
> port 1723 and protocol forward protocol 47(GRE). And it'll only work for
> one machine behind each NAT firewall.
> > 2) Does the basic package found in woody WITHOUT any patches support any
> > kind of encryption mechanism?
> Nope, but if you trust me not to do anything nasty, I can send you a .deb
> with mppe and smb-stripdomain patches.

   Any luck finding those patches for ppp w/ mppe for woody you were going to send?

> Then you can also install the kernel-patch-mppe package and apply it to
> your kernel.
> This should also take care of questions 3,4,6 and 7.
> > 5) Is the concept the same as that for a regular dialup connection using
> > ppp?
> Yes and no. The lcp/ppp protocols are the same (with the addition of mppe
> for encryption). The transport layer is over ip rather than over a
> telephone line, however.
> The client create a tcp connection on port 1723 to the server. They have a
> little chat and open up an ip socket connection (protocol 47 - GRE) to
> contain the tunnel and run ppp over it.
> Other than that simple explanation, there are many, many FAQs and
> whitepapers you can read - most of them available at, or linked from
> http://poptop.lineo.com/
> Martin.
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