[pptp-server] pptp client setup guide needed

[G. Georgiev]

	Hi,

	I try to set-up pptp client for linux on my gateway and had every
possible kind of problems. The documentation (if any) is really scarce.

	I try linux pptp-1.0.2 client on linux 2.2.13 with pppd-2.2.10
patched with ppp-2.3.10.pptp.patch. I am able to authenticate, bring up
the interface, but every single packet I receive form the remote end is
rejected from my pppd like:

Jun 17 17:06:37 gate pppd[11365]: rcvd [LCP ProtRej id=0x10 cb c5 e7 00 

	The server on the remoote side is probably NT and I have no
control there.

	Some idea why?

gate:~# lsmod
Module                  Size  Used by
Appp_deflate            42692   0
bsd_comp                3824   0
ppp_mppe               13872   0
nfs                    30360   0  (unused)
lockd                  32424   0  [nfs]
sunrpc                 54692   0  [nfs lockd]
ppp                    21388   4  [ppp_deflate bsd_comp ppp_mppe]
slhc                    4524   2  [ppp]
3c509                   6036   1

/var/log/messages:
Jun 17 17:06:16 gate pppd[11365]: pppd 2.3.10 started by root, uid 0
Jun 17 17:06:16 gate pppd[11365]: Using interface ppp2
Jun 17 17:06:17 gate pppd[11365]: Connect: ppp2 <--> /dev/ttya0
Jun 17 17:06:21 gate pppd[11365]: Remote message: CHAP authentication
success, unit 131992644
Jun 17 17:06:22 gate pppd[11365]: local  IP address 172.20.75.215
Jun 17 17:06:22 gate pppd[11365]: remote IP address 172.20.0.13
Jun 17 17:06:22 gate pppd[11365]: MPPE 40 bit, stateless compression
enabled

/var/log/debug
Jun 17 17:06:21 gate pppd[11365]: Timeout 0x80557ec:0x80776a0 in 3 
seconds.
Jun 17 17:06:21 gate pppd[11365]: rcvd [CHAP Success id=0xad "CHAP
authentication success, unit 131992644"]
Jun 17 17:06:21 gate pppd[11365]: Untimeout 0x80557ec:0x80776a0.
Jun 17 17:06:21 gate pppd[11365]: sent [IPCP ConfReq id=0x1 <addr
10.0.0.1> <compress VJ 0f 01>]
Jun 17 17:06:21 gate pppd[11365]: Timeout 0x80500b8:0x8077620 in 3 
seconds.
Jun 17 17:06:21 gate pppd[11365]: sent [CCP ConfReq id=0x1 <deflate 15>
<deflate(old#) 15> <mppe 1 0 0 20> <bsd v1 15>]
Jun 17 17:06:21 gate pppd[11365]: Timeout 0x80500b8:0x8077760 in 3
seconds.
Jun 17 17:06:21 gate pppd[11365]: rcvd [IPCP ConfReq id=0xb9 <addr
172.20.0.13>
<compress VJ 07 00>]
Jun 17 17:06:21 gate pppd[11365]: ipcp: returning Configure-ACK
Jun 17 17:06:21 gate pppd[11365]: sent [IPCP ConfAck id=0xb9 <addr
172.20.0.13>
<compress VJ 07 00>]
Jun 17 17:06:22 gate pppd[11365]: rcvd [IPCP ConfNak id=0x1 <addr
172.20.75.215> <compress VJ 07 00>]
Jun 17 17:06:22 gate pppd[11365]: Untimeout 0x80500b8:0x8077620.
Jun 17 17:06:22 gate pppd[11365]: sent [IPCP ConfReq id=0x2 <addr
172.20.75.215> <compress VJ 07 00>]
Jun 17 17:06:22 gate pppd[11365]: Timeout 0x80500b8:0x8077620 in 3
seconds.
Jun 17 17:06:22 gate pppd[11365]: rcvd [CCP ConfRej id=0x1 <deflate 15>
<deflate(old#) 15> <bsd v1 15>]
Jun 17 17:06:22 gate pppd[11365]: Untimeout 0x80500b8:0x8077760.
Jun 17 17:06:22 gate pppd[11365]: sent [CCP ConfReq id=0x2 <mppe 1 0 0
20>]
Jun 17 17:06:22 gate pppd[11365]: Timeout 0x80500b8:0x8077760 in 3
seconds.
Jun 17 17:06:22 gate pppd[11365]: rcvd [IPCP ConfAck id=0x2 <addr
172.20.75.215> <compress VJ 07 00>]
Jun 17 17:06:22 gate pppd[11365]: Untimeout 0x80500b8:0x8077620.
Jun 17 17:06:22 gate pppd[11365]: ipcp: up
Jun 17 17:06:22 gate pppd[11365]: Script /etc/ppp/ip-up started (pid
11367)
Jun 17 17:06:22 gate pppd[11365]: rcvd [CCP ConfReq id=0x77 <mppe 1 0 0
20>]
Jun 17 17:06:22 gate pppd[11365]: sent [CCP ConfAck id=0x77 <mppe 1 0 0
20>]
Jun 17 17:06:22 gate pppd[11365]: rcvd [CCP ConfAck id=0x2 <mppe 1 0 0
20>]
Jun 17 17:06:22 gate pppd[11365]: Untimeout 0x80500b8:0x8077760.
Jun 17 17:06:23 gate pppd[11365]: Script /etc/ppp/ip-up finished (pid
11367), status = 0x0
Jun 17 17:06:31 gate pppd[11365]: rcvd [LCP ProtRej id=0xa 02 61 aa a2 fd
Jun 17 17:06:32 gate pppd[11365]: rcvd [LCP ProtRej id=0xb 9d 37 cb f8 29
Jun 17 17:06:33 gate pppd[11365]: rcvd [LCP ProtRej id=0xc ab 98 7b 62 7c