[pptp-server] Conection works, but get Protocol-Reject when trying to send packets

[Dani Arbel]

Hi!
to capture all packets use tcpdump with option -w (to write to a file.
You can analize the packets with ethereal .
Dani

On Sun, 4 Mar 2001, Jerry Fields wrote:

> Some other people on this list appear to have seen
> similar problems to this. 
> After some amount of work, I've gotten a connection up
> via PPTP and the routing tables setup.
> Everything looks good, but I'm unable to send packets.
> 
> I sent the debugging messages to a file via
> syslog.conf
> and notice the following messages everytime I attempt 
> to send a packet.
> 
> Mar  4 20:54:14 foo pppd[2719]: rcvd [LCP ProtRej
> id=0x8 94 e9 14 d5 46 73 50 f7 a0 de 9f 45 7c 25 6b 8d
> df f1 8a 63 50 b2 c4 06 dc c1 a8 0b 7a 42 81 f0 f0 c5
> e0 6e cf 21 d0 fa 2b d9 42 1f 0d ba 0c 38 0c df a4 81
> 4f 43 97 d1 84 ae 77 8b 48 d4 33 db b3 52 7b 64 5d 91
> 8a ba bc 98 78 da ac
> Mar  4 20:54:14 foo pppd[2719]: Protocol-Reject for
> unsupported protocol 0x94e9
> Mar  4 20:54:21 foo pppd[2719]: rcvd [LCP ProtRej
> id=0x9 ee 7a 4b 43 92 d4 7e c9 df d0 03 a1 3f 91 4a 8e
> 10 b6 cb df 49 c7 31 5b 00 ab d1 4d 54 6c 25 11 1f 46
> 8e fb 27 8e 39 4c 1f b8 8a 81 04 b9 3b b7 81 3c 69 2b
> 9d 4a 75 c5 ef af 94 f8 dd 49 14 b9 4d 0a 2f 3c b6 af
> da 55 68 84 fd 4f 62
> Mar  4 20:54:21 foo pppd[2719]: Protocol-Reject for
> unsupported protocol 0xee7a
> 
> I'm pretty sure that my routing table is setup
> correctly since I've run ethereal on ppp0 and I can
> see
> all my outgoing packets. No incoming packets show up.
> 
> One annying thing is that when I add "record /tmp/foo"
> to my /etc/ppp/options file, the connection always
> fails.
> So I can't capture the raw PPTP packets.
> 
> I'm behind a Linux Masq firewall and I've applied the
> GRE patch
> and I've established a connection to the server from
> a WinNT client behind the firewall.
> 
> I've also tried appling the patch to pptp.c suggested
> in this web page:
> http://personal.rdu.bellsouth.net/rdu/t/a/tayljl/linux-pptp-client/linux-pptp-client-setup.html
> 
> I'm running ppp-mppe-2.3.11-10 from a rpm and at first
> I tried pptp-linux-1.0.2-8 but then re-built
> pptp-linux
> from the soruce with the above patch.
> 
>   __Jerry Fields
> 
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