[pptp-server] Forwarding GRE

[Philip Van Baren]

Here are a couple references for MASQ'd VPN servers:

        ftp://ftp.rubyriver.com/pub/jhardin/masquerade/ip_masq_vpn.html

ftp://ftp.rubyriver.com/pub/jhardin/masquerade/VPN-howto/VPN-Masquerade.html

> -----Original Message-----
> From: pptp-server-admin at lists.schulte.org
> [mailto:pptp-server-admin at lists.schulte.org]On Behalf Of Philip Van
> Baren
> Sent: Wednesday, October 18, 2000 6:12 PM
> To: pptp-server at lists.schulte.org
> Subject: RE: [pptp-server] Forwarding GRE
>
>
> Does this help?
>
> 7.3.5. Get "pptpd[24120]: GRE: read(fd=5,buffer=804d9c0,len=8196) from
> 	     PTY failed: status = -1 error = Input/output error"
> 	    "pptpd[24120]: CTRL: PTY read or GRE write failed
> (pty,gre)=(5,6)"
> 	    "pptpd[24120]: CTRL: Client 12.72.37.31 control
> connection finished"
> 	errors in your log file when the pptpd program is running
> on a machine
> 	behind a masq'ed firewall.
>
> 	Solution:  Apply the ip_masq_vpn.patch patch file to kernel.
> 	    Also, look at Linux VPN Masquerade HOWTO: Patching and
> configuring
> 	    kernel for VPN Masquerade support for details.
>
> > -----Original Message-----
> > From: pptp-server-admin at lists.schulte.org
> > [mailto:pptp-server-admin at lists.schulte.org]On Behalf Of Al Ludwig
> > Sent: Wednesday, October 18, 2000 5:28 PM
> > To: pptp-server at lists.schulte.org
> > Subject: [pptp-server] Forwarding GRE
> >
> >
> > Hello,
> >
> > It looks like my firewall will not forward GRE through to my
> PPTP Server.
> > If this turns out to be the case, does anyone know of any
> documents on how
> > to create a tunnel back to the client via PPTP?  The Firewall is
> > letting GRE
> > out, and I've seen it mentioned before, but I'm unable to find anything
> > worthwhile on it.  Any ideas would be greatly appreciated.
> >
> > Thanks,
> >
> > -AL
> >
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