[pptp-server] pptpd/pppd/mppe + kernel 2.2.19

foob at return0.net foob at return0.net
Wed May 30 08:33:48 CDT 2001 

Is it possible to use pptpd,pppd,mppe128 on linux *without*
kernel modules?  Im running 2.2.19, I dont want to add module
support, but i'd quite like secure(ish) pptp.  
I have configured everything, and a Windows2000 machine can
connect, if encyrption is 'optional'.  If it is 'required', 
Windows fails to negotiate, saying the remote server doesnt
support the desired encyrption.

Is this because I havent got the ppp mppe modules installed?
Can I build them into the kernel somehow?

5.13	Q: I can get the PPTP connection to work fine, but can not get
encryption to work.  What is wrong?

	A: It has been reported that changing PPP from being built into
the kernel to being a loadable module has fixed the problem.  The
configuration file listed in the earlier instructions does build PPP as a
loadable module.
(http://home.swbell.net/berzerke/2.4_Kernel_PPTPD-HOWTO.txt)

Anyone got any knowledge of this?  Why should it be required
to be modular?  Any help much appreciatde...


- foob


(heres a syslog dump of an unsuccessful connection from 2k to 
linux)

 pptpd[7140]: MGR: Launching /usr/sbin/pptpctrl to handle client
 pptpd[7140]: CTRL: local address = 10.10.10.254
 pptpd[7140]: CTRL: remote address = 10.10.10.101
 pptpd[7140]: CTRL: Client xxx.xxx.xxx.xxx control connection started
 pptpd[7140]: CTRL: Received PPTP Control Message (type: 1)
 pptpd[7140]: CTRL: Made a START CTRL CONN RPLY packet
 pptpd[7140]: CTRL: I wrote 156 bytes to the client.
 pptpd[7140]: CTRL: Sent packet to client
 pptpd[7140]: CTRL: Received PPTP Control Message (type: 7)
 pptpd[7140]: CTRL: Set parameters to 1525 maxbps, 64 window size
 pptpd[7140]: CTRL: Made a OUT CALL RPLY packet
 pptpd[7140]: CTRL: Starting call (launching pppd, opening GRE)
 pptpd[7140]: CTRL: pty_fd = 4
 pptpd[7140]: CTRL: tty_fd = 5
 pptpd[7140]: CTRL: I wrote 32 bytes to the client.
 pptpd[7141]: CTRL (PPPD Launcher): Connection speed = 115200
 pptpd[7141]: CTRL (PPPD Launcher): local address = 10.10.10.254
 pptpd[7141]: CTRL (PPPD Launcher): remote address = 10.10.10.101
 pptpd[7140]: CTRL: Sent packet to client
 pppd[7141]: pppd 2.4.1 started by root, uid 0
 pppd[7141]: Using interface ppp0
 pppd[7141]: Connect: ppp0 <--> /dev/pts/5
 pppd[7141]: sent [LCP ConfReq id=0x1 <mru 1490> <asyncmap 0x0> <auth chap
81> <magic 0xcea6f60d> <pcomp> <accomp>]
 pptpd[7140]: CTRL: Received PPTP Control Message (type: 15)
 pptpd[7140]: CTRL: Got a SET LINK INFO packet with standard ACCMs
 pptpd[7140]: GRE: Discarding out of order packet
 pppd[7141]: rcvd [LCP ConfNak id=0x1 <mru 1500>]
 pppd[7141]: sent [LCP ConfReq id=0x2 <asyncmap 0x0> <auth chap 81> <magic
0xcea6f60d> <pcomp> <accomp>]
 pppd[7141]: rcvd [LCP ConfAck id=0x2 <asyncmap 0x0> <auth chap 81> <magic
0xcea6f60d> <pcomp> <accomp>]
 pppd[7141]: rcvd [LCP ConfReq id=0x1 <magic 0x6c2519ea> <pcomp> <accomp>
< 0d 03 06> <mrru 1614> <endpoint
[local:e1.d1.f0.6e.e7.67.48.7c.8f.9b.e3.28.ac.0d.7a.d7.00.00.00.09]>]
 pppd[7141]: sent [LCP ConfRej id=0x1 < 0d 03 06> <mrru 1614>]
 pppd[7141]: rcvd [LCP ConfReq id=0x2 <magic 0x6c2519ea> <pcomp> <accomp>
<endpoint
[local:e1.d1.f0.6e.e7.67.48.7c.8f.9b.e3.28.ac.0d.7a.d7.00.00.00.09]>]
 pppd[7141]: sent [LCP ConfAck id=0x2 <magic 0x6c2519ea> <pcomp> <accomp>
<endpoint
[local:e1.d1.f0.6e.e7.67.48.7c.8f.9b.e3.28.ac.0d.7a.d7.00.00.00.09]>]
 pppd[7141]: sent [LCP EchoReq id=0x0 magic=0xcea6f60d]
 pppd[7141]: sent [CHAP Challenge id=0x1
<43e28c5c0616b272f6f180fa57005c56>, name = "xxx"]
 pptpd[7140]: CTRL: Received PPTP Control Message (type: 15)
 pptpd[7140]: CTRL: Ignored a SET LINK INFO packet with real ACCMs!
 pppd[7141]: rcvd [LCP code=0xc id=0x3 6c 25 19 ea 4d 53 52 41 53 56 35 2e
30 30]
 pppd[7141]: sent [LCP CodeRej id=0x3 0c 03 00 12 6c 25 19 ea 4d 53 52 41
53 56 35 2e 30 30]
 pppd[7141]: rcvd [LCP code=0xc id=0x4 6c 25 19 ea 4d 53 52 41 53 2d 31 2d
54 45 53 54]
 pppd[7141]: sent [LCP CodeRej id=0x4 0c 04 00 14 6c 25 19 ea 4d 53 52 41
53 2d 31 2d 54 45 53 54]
 pppd[7141]: rcvd [LCP EchoRep id=0x0 magic=0x6c2519ea]
 pppd[7141]: rcvd [CHAP Response id=0x1
<3f50738e46d222512e804f9793fdb7d00000000000000000e98127435c78168a6a3a4ed2acbe517a1cf6b7e8cc3abaa600>,
name = "xxx"]
 pppd[7141]: sent [CHAP Success id=0x1
"S=0A5140A473E7E472164A21F197C7C5CC039110A8"]
 pppd[7141]: sent [IPCP ConfReq id=0x1 <addr 10.10.10.254> <compress VJ 0f
01>]
 pppd[7141]: sent [CCP ConfReq id=0x1 <bsd v1 15>]
 pppd[7141]: MSCHAP-v2 peer authentication succeeded for xxx
 pppd[7141]: rcvd [CCP ConfReq id=0x5 <mppe 1 0 0 e1>]
 pppd[7141]: sent [CCP ConfRej id=0x5 <mppe 1 0 0 60>]
 pptpd[7140]: GRE: Discarding out of order packet
 pppd[7141]: rcvd [IPCP ConfRej id=0x1 <compress VJ 0f 01>]
 pppd[7141]: sent [IPCP ConfReq id=0x2 <addr 10.10.10.254>]
 pppd[7141]: rcvd [CCP ConfRej id=0x1 <bsd v1 15>]
 pppd[7141]: sent [CCP ConfReq id=0x2]
 pppd[7141]: rcvd [IPCP ConfAck id=0x2 <addr 10.10.10.254>]
 pppd[7141]: rcvd [CCP ConfNak id=0x2 <mppe 0 0 0 0>]
 pppd[7141]: sent [CCP ConfReq id=0x3]
 pppd[7141]: rcvd [CCP ConfNak id=0x3 <mppe 0 0 0 0>]
 pppd[7141]: sent [CCP ConfReq id=0x4]
 pppd[7141]: rcvd [CCP ConfNak id=0x4 <mppe 0 0 0 0>]
 pppd[7141]: sent [CCP ConfReq id=0x5]
 pppd[7141]: rcvd [CCP ConfNak id=0x5 <mppe 0 0 0 0>]
 pppd[7141]: sent [CCP ConfReq id=0x6]
 pppd[7141]: rcvd [CCP ConfNak id=0x6 <mppe 0 0 0 0>]
 pppd[7141]: sent [CCP ConfReq id=0x7]
 pppd[7141]: rcvd [CCP ConfNak id=0x7 <mppe 0 0 0 0>]
 pppd[7141]: sent [CCP ConfReq id=0x8]
 pppd[7141]: rcvd [CCP ConfNak id=0x8 <mppe 0 0 0 0>]
 pppd[7141]: sent [CCP ConfReq id=0x9]
 pppd[7141]: rcvd [CCP ConfNak id=0x9 <mppe 0 0 0 0>]
 pppd[7141]: sent [CCP ConfReq id=0xa]
 pppd[7141]: rcvd [CCP ConfNak id=0xa <mppe 0 0 0 0>]
 pppd[7141]: sent [CCP ConfReq id=0xb]
 pppd[7141]: rcvd [CCP ConfNak id=0xb <mppe 0 0 0 0>]
 pppd[7141]: sent [CCP ConfReq id=0xc]
 pptpd[7140]: CTRL: Received PPTP Control Message (type: 15)
 pptpd[7140]: CTRL: Ignored a SET LINK INFO packet with real ACCMs!
 pppd[7141]: rcvd [LCP TermReq id=0x7
"l%\031\37777777752\000<\37777777715t\000\000\002\37777777746"]
 pppd[7141]: LCP terminated by peer (l%^YM-j^@<M-Mt^@^@^BM-f)
 pppd[7141]: sent [LCP TermAck id=0x7]
 pptpd[7140]: CTRL: Received PPTP Control Message (type: 12)
 pptpd[7140]: CTRL: Made a CALL DISCONNECT RPLY packet
 pptpd[7140]: CTRL: Received CALL CLR request (closing call)
 pptpd[7140]: CTRL: I wrote 148 bytes to the client.
 pptpd[7140]: CTRL: Sent packet to client
 pptpd[7140]: CTRL: Error with select(), quitting
 pptpd[7140]: CTRL: Client xxx.xxx.xxx.xxx control connection finished
 pptpd[7140]: CTRL: Exiting now
 pptpd[7119]: MGR: Reaped child 7140
 pppd[7141]: Modem hangup
 pppd[7141]: Connection terminated.
 pppd[7141]: Connect time 0.1 minutes.
 pppd[7141]: Sent 669 bytes, received 767 bytes.
 pppd[7141]: Exit.May 30 12:41:23 node pptpd[6846]: MGR: Launching /usr/sbin/pptpctrl to handle client

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