[pptp-server] gre protocol not available - help!

[truin at enterprise.truin.com]

IS your test computer behind a NAT'd firewall?  I have the GRE Protocol 
Not Available error when my Win client is on a private IP being NAT'd 
behind a linux firewall.  Perhaps your situation is similar?

-=Jason=-


On Wed, 3 Apr 2002, [Windows-1252] Örjan Johansson wrote:

> I just looked through my .config file, and it says CONFIG_NET_IPGRE=y so
> the line in modules.conf is as vain as I suspected right? The utterly
> confusing thing is that once or twice I've got it working, without doing
> anything...... So why is the protocol not available 9 times out of ten?
> Any ideas at all?
>  
> Cheers,
> Örjan
> 
> 	-----Original Message----- 
> 	From: robert 
> 	Sent: Wed 2002-04-03 22:39 
> 	To: Örjan Johansson; pptp-server at lists.schulte.org 
> 	Cc: 
> 	Subject: Re: [pptp-server] gre protocol not available - help!
> 	
> 	
> 
> 	Did you actually compile gre as a module?  You must select it in
> your kernel
> 	configuration.
> 	
> 	On Wednesday 03 April 2002 11:56 am, Örjan Johansson wrote:
> 	> Hi all!
> 	>
> 	> After going through tons of problems I managed to get Win
> clients -
> 	> Linux pptp server working thanks to help from list members.
> But now I
> 	> think I'm losing my mind. I set up another box to verify the
> setup
> 	> procedure, and guess what? No luck... Here's the setup:
> 	>
> 	> Redhat 7.2
> 	> Recompiled 2.4.19-31 kernel patched with the mppe-patch and
> configured
> 	> with all the ppp options
> 	> ppp 2.4.1 patched with mppe
> 	> pptpd 1.1.12
> 	>
> 	> Now when trying to connect I get GRE: read error: Protocol not
> 	> available.
> 	> I saw a post on the subject and the guy wrote that he solved
> it by
> 	> loading ip_gre. He did not, however give any clue as to how he
> loaded
> 	> it, and I thoght kernel compile would take care of it???
> Here's what my
> 	> modules.conf looks like:
> 	> alias parport_lowlevel parport_pc
> 	> alias eth0 3c59x
> 	> alias eth1 3c59x
> 	> alias usb-controller usb-uhci
> 	> alias net-pf-47 ip_gre
> 	> alias char-major-108 ppp_generic # This will be different for
> 2.3.x
> 	> kernels
> 	> alias tty-ldisc-3 ppp_async
> 	> alias tty-ldisc-14 ppp_synctty
> 	> alias ppp-compress-18 ppp_mppe
> 	> alias ppp-compress-21 bsd_comp
> 	> alias ppp-compress-24 ppp_deflate
> 	> alias ppp-compress-26 ppp_deflate
> 	> I added the ip_gre line myself in a vain attempt to solve the
> 	> problem....
> 	>
> 	> Anyone out there who can clarify this and help me out? I'd
> sure
> 	> appreciate it! Did I just screw up the config of my kernel or
> what?
> 	>
> 	> Any input appreciated!
> 	>
> 	> TIA,
> 	> Orjan
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