[pptp-server] MPPE for Linux kernel 2.4.x and pppd-2.4.0

Joey Coco anesthes at cisdi.com
Mon Feb 5 18:12:53 CST 2001


Hello,

Thanks. Understand the fact that I didn't notice more than one
"2.4.0" patch file on the ftp server, and assumed I grabbed the patch
for "both".. I grabbed the PPP patch file, whooops.. 

I do however have the Kernel and PPPD patched, and I authenticate and
everything seems to work fine. Except, I cannot get any data to travel
accross the tunnel.  It ping, tcp sockets, nothing. The rx and tx packets
go up when I do an ifconfig ppp0.. But nothing seems to be getting
through. I checked IP on both sides, and the Windows client gets the
proper IP address..

The problem I had with the "TTY line dicipline" was a config option in the
Kernel. There are options for "PPP with Async lines" and "PPP with Sync"
lines. Well the async option has to be compiled in for pppd to work
with pptpd. Otherwise it fails. Makes sence now, but this was not a
configurable sub option on 2.2.x kernels, so I wasn't looking for it. 
Apperently when 2.4.0 brought new methods of using PPPD, they made
the kernel-time configuration a bit better.

So now I've got a tunnel that establishes, but data doesn't seem to work.

Thanks.

-- Joe


On Sun, 4 Feb 2001, Gill, Vern wrote:

> This IS the kernel patch file. The ppp-2.4.0-openssl-0.9.6-mppe.patch.gz
> is the PPP patch file... You need both for it to work...
> See ftp://ftp.binarix.com/pub/ppp-mppe/README.ASC for more info.
> 
> BTW, the following instructions are not correct;
> It should be easy to apply: assuming you keep your linux source in
> /usr/src/linux, just cd to /usr/src and do
> 
> zcat linux-2.4.0-openssl-0.9.6-mppe.patch.gz | patch -p1
> 
> 
> This should be done in /usr/src/linux
> 					  ^^^^^
> 
> Enjoy
> 
> 
> -----Original Message-----
> From: Joey Coco [mailto:anesthes at cisdi.com]
> Sent: Sunday, February 04, 2001 5:30 PM
> To: Santtu Hyrkkö
> Cc: VPN MailList
> Subject: Re: [pptp-server] MPPE for Linux kernel 2.4.x and pppd-2.4.0
> 
> Hello,
> 
> 
> On 4 Feb 2001, Santtu [iso-8859-1] Hyrkk wrote:
> 
> > Joey Coco <anesthes at cisdi.com> writes:
> > 
> > > This is true but the MPPE patch for 2.4.0 PPPD doesn't create kernel
> > > patches, like it did for 2.3.11. So there is no ppp_mppe module to
> be
> > > found anywhere.
> > 
> > You must patch your kernel source with this:
> 
> Kernel source?? That won't patch the kernel, but it patches pppd just
> fine..??
> 
> - Joe
> > 
> >
> ftp://ftp.binarix.com/pub/ppp-mppe/linux-2.4.0-openssl-0.9.6-mppe.patch
> .gz
> > 
> > > Besides that, I'm not even getting as far as MPPE yet anyhow, I
> can't
>  even
> > > get PPPD to start the initial GRE tunnel. I'm getting that error:
> > > 
> > > Feb  4 13:49:27 demo pppd[2055]: Couldn't set tty to PPP
> > > discipline: Invalid argument
> > 
> > Have you configured UNIX98 PTY support in your kernel?
> > 
> > -- 
> > Santtu Hyrkk
> 


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