[pptp-server] PPTP Client connecting to Win NT server?

[Will]

I hope the readers of this list will forgive a slightly off-topic
question.

I am trying to establish a pptp connection between my linux box
and a Win-NT server.

The Windows NT system is probably SP-3 (I can check), and works fine
for connections from my Windows systems.

What I have:

RedHat 6.0 (2.2.5-15)
PPTP-linux v1.0.2
PPP v2.3.8, patched with
http://www.moretonbay.com/vpn/releases/ppp-2.3.8-mppe-others-norc4_TH7.diff.gz
   and RC4 code from
ftp://ftp.psy.uq.oz.au/pub/Crypto/SSL/SSLeay-0.6.6b.tar.gz
   per the instuctions in
http://www.moretonbay.com/vpn/releases/HOWTO-PoPToP.txt

This is coming tantalizingly close to working.  The connection is being
made,
ifconfig shows the link to be up, but pings to the far side of the ppp
connection
fail to get replies and cause "Protocol-Reject for unsupported protocol"
messages
to appear in the logs.  (See full log printout at the end of this
message).
This seems similar to problems others have been reporting to this
mailing list,
but I never saw any resolution.

Given that the protocol numbers being rejected seem like pretty random
numbers
(Although they are the same on each attempt).  I'm guessing that
something is 
looking at the encrypted bit-stream and getting confused.

Has anyone gotten this to work?  Am I crazy to think it should work?

- 
Will McCown
lliw at pacbell.net, willmc at alumni.caltech.edu

************
Here is the except from the ppp log file -- slightly sanitized in that
some IP addresses
have been changed:
Oct  9 14:13:52 adsl-myhost (unknown)[13720]:
log[pptp_dispatch_ctrl_packet:pptp_ctrl.c:531]: Client connection
established.
Oct  9 14:13:53 adsl-myhost (unknown)[13720]:
log[pptp_dispatch_ctrl_packet:pptp_ctrl.c:637]: Outgoing call
established.
Oct  9 14:13:53 adsl-myhost pppd[13722]: pppd 2.3.8 started by root, uid
0
Oct  9 14:13:53 adsl-myhost pppd[13722]: Using interface ppp0
Oct  9 14:13:53 adsl-myhost pppd[13722]: Connect: ppp0 <--> /dev/ttya0
Oct  9 14:13:53 adsl-myhost pppd[13722]: sent [LCP ConfReq id=0x1
<asyncmap 0x0> <magic 0xfa1cf43a> <pcomp> <accomp>]
Oct  9 14:13:55 adsl-myhost pppd[13722]: rcvd [LCP ConfReq id=0x0 <auth
chap m$oft> <magic 0x330c> <pcomp> <accomp>]
Oct  9 14:13:55 adsl-myhost pppd[13722]: sent [LCP ConfAck id=0x0 <auth
chap m$oft> <magic 0x330c> <pcomp> <accomp>]
Oct  9 14:13:55 adsl-myhost pppd[13722]: rcvd [LCP ConfAck id=0x1
<asyncmap 0x0> <magic 0xfa1cf43a> <pcomp> <accomp>]
Oct  9 14:13:55 adsl-myhost pppd[13722]: rcvd [CHAP Challenge id=0xe
<6e4e5621d235b13e>, name = ""]
Oct  9 14:13:55 adsl-myhost pppd[13722]: sent [CHAP Response id=0xe
<000000000000000000000000000000000000000000000000db75ccae
d49c62d0d5e7dab840e145e540a33716d01fb04c01>, name = "pwill"]
Oct  9 14:13:56 adsl-myhost pppd[13722]: rcvd [CHAP Success id=0xe ""]
Oct  9 14:13:56 adsl-myhost pppd[13722]: sent [IPCP ConfReq id=0x1 <addr
111.222.111.222> <compress VJ 0f 01>]
Oct  9 14:13:56 adsl-myhost pppd[13722]: sent [CCP ConfReq id=0x1
<deflate 15> <deflate(old#) 15> <mppe 0 0 0 20> <bsd v1 15>
]
Oct  9 14:13:56 adsl-myhost pppd[13722]: rcvd [CCP ConfReq id=0x1 <mppe
0 0 0 31>]
Oct  9 14:13:56 adsl-myhost pppd[13722]: sent [CCP ConfNak id=0x1 <mppe
0 0 0 20>]
Oct  9 14:13:56 adsl-myhost pppd[13722]: rcvd [IPCP ConfReq id=0x2
<compress VJ 0f 01> <addr 24.130.34.1>]
Oct  9 14:13:56 adsl-myhost pppd[13722]: sent [IPCP ConfAck id=0x2
<compress VJ 0f 01> <addr 24.130.34.1>]
Oct  9 14:13:56 adsl-myhost pppd[13722]: rcvd [IPCP ConfNak id=0x1 <addr
24.130.34.2>]
Oct  9 14:13:56 adsl-myhost pppd[13722]: sent [IPCP ConfReq id=0x2 <addr
24.130.34.2> <compress VJ 0f 01>]
Oct  9 14:13:56 adsl-myhost pppd[13722]: rcvd [CCP ConfRej id=0x1
<deflate 15> <deflate(old#) 15> <bsd v1 15>]
Oct  9 14:13:56 adsl-myhost pppd[13722]: sent [CCP ConfReq id=0x2 <mppe
0 0 0 20>]
Oct  9 14:13:56 adsl-myhost pppd[13722]: rcvd [CCP ConfReq id=0x3 <mppe
0 0 0 20>]
Oct  9 14:13:56 adsl-myhost pppd[13722]: sent [CCP ConfAck id=0x3 <mppe
0 0 0 20>]
Oct  9 14:13:56 adsl-myhost pppd[13722]: rcvd [IPCP ConfAck id=0x2 <addr
24.130.34.2> <compress VJ 0f 01>]
Oct  9 14:13:56 adsl-myhost pppd[13722]: local  IP address 24.130.34.2
Oct  9 14:13:56 adsl-myhost pppd[13722]: remote IP address 24.130.34.1
Oct  9 14:13:56 adsl-myhost pppd[13722]: Script /etc/ppp/ip-up started
(pid 13723)
Oct  9 14:13:56 adsl-myhost pppd[13722]: rcvd [CCP ConfAck id=0x2 <mppe
0 0 0 20>]
Oct  9 14:13:56 adsl-myhost pppd[13722]: MPPE 40 bit, non-stateless
compression enabled
Oct  9 14:13:58 adsl-myhost pppd[13722]: Script /etc/ppp/ip-up finished
(pid 13723), status = 0x0
Oct  9 14:14:43 adsl-myhost pppd[13722]: rcvd [LCP ProtRej id=0x4 f8 af
eb 7c f5 f2 1b 16 52 f3 a0 5b e9 cd 23 57 ba e9 34 c0
 b4 b2 50 ec 05 d1 80 ec 5b d6 06 4c e4 15 5b 78 1c 41 1e bb 46 cc c5 ad
cf 7e 22 40 0b c7 0a 73 c4 b7 cd 44 36 b0 bb ef 07 4
c 08 00 40 b8 fe 5b 45 00 b6 e0 cf 70 85 92 6d
Oct  9 14:14:43 adsl-myhost pppd[13722]: Protocol-Reject for unsupported
protocol 0xf8af
Oct  9 14:14:49 adsl-myhost pppd[13722]: rcvd [CCP ResetReq id=0x0]
Oct  9 14:14:49 adsl-myhost pppd[13722]: sent [CCP ResetAck id=0x0]
Oct  9 14:14:49 adsl-myhost pppd[13722]: rcvd [CCP CodeRej id=0x5 0f 00
00 04]
Oct  9 14:14:49 adsl-myhost pppd[13722]: CCP: Rcvd Code-Reject for code
15, id 0
Oct  9 14:14:50 adsl-myhost pppd[13722]: rcvd [LCP ProtRej id=0x6 f8 af
eb 7c f5 f2 1b 0a 52 f3 a0 5b e9 d9 23 57 ba e9 34 c0
 b4 b2 50 ec c1 d3 80 ec 52 d6 0f 4c e4 15 89 7a 1c 41 1e bb 46 cc c5 ad
cf 7e 22 40 0b c7 0a 73 c4 b7 cd 44 36 b0 bb ef 07 4
c 08 00 40 b8 fe 5b 45 00 b6 e0 cf 70 85 92 6d
Oct  9 14:14:50 adsl-myhost pppd[13722]: Protocol-Reject for unsupported
protocol 0xf8af
Oct  9 14:14:54 adsl-myhost pppd[13722]: rcvd [LCP ProtRej id=0x7 b6 fd
89 70 fc 99 87 54 f6 9e e9 3b 88 fb f9 b8 89 e7 86 c6
 36 eb 32 dd 5d b2 c2 cc de 22 bc 94 ca 60 f1 b8 fb 21 17 08 6b 9a c4 26
1b 19 5f 82 04 27 24 ba 46 bf 6a 93 21 b8 c1 a7 77 0
7 27 1e 7f d1 c5 d4 01 ec e4 ff d4 f4 7a 38 3b
Oct  9 14:14:54 adsl-myhost pppd[13722]: Protocol-Reject for unsupported
protocol 0xb6fd
Oct  9 14:14:56 adsl-myhost pppd[13722]: rcvd [LCP ProtRej id=0x8 d8 69
25 8c 2b 08 25 bf 90 56 f3 ab 67 88 8b 3d 55 e0 91 e8
 d2 a9 50 e1 40 dd a8 ac f0 9a ec e4 ed bb dd 47 41 0c cd b8 a2 79 e1 2a
82 1f 1b 9a 9e 17 87 50 0e aa d9 f6 9b 50 22 44 c8 e
d 4e 43 7a a9 be e7 20 38 80 26 1c 19 bd 41 8c
Oct  9 14:14:56 adsl-myhost pppd[13722]: Protocol-Reject for unsupported
protocol 0xd869