[maemo-developers] PPTP Problem "No Auth is Possible"

[From: Christian]

Hello,

I Have a Nokia N800 with the actual OS2008 Diablo. Kernel Version 2.6.21. Since 2.6.15 theres mppe-128 support i think and hope :-) But this is not the Problem. I Turned Encryption off on my VPN Router for testing.

First my Configs :

options:

lock 
noauth 
refuse-chap 
refuse-mschap 
refuse-eap 
nobsdcomp 
nodeflate 
mtu 1416

chap-secrets

"christian" "pptp" "<password>" *

peer config file :

pty "pptp <my.dyndns.adress> --nolaunchpppd"
name christian
remotename PPTP
file /etc/ppp/options.pptp
ipparam home

If i start my tunnel using this command : "pon home debug dump logfd 2 nodetach"  I always get an error "no auth is possible" and my Bintec VPN Access 25 says "PAP/CHAP authentication failure"

This is the output of pppd :

/home/user # pon home debug dump logfd 2 nodetach

pppd options in effect:
debug # (from command line)
nodetach # (from command line)
logfd 2 # (from command line)
dump # (from command line)
noauth # (from /etc/ppp/options.pptp)
refuse-chap # (from /etc/ppp/options.pptp)
refuse-mschap # (from /etc/ppp/options.pptp)
refuse-eap # (from /etc/ppp/options.pptp)
name christian # (from /etc/ppp/peers/home)
remotename PPTP # (from /etc/ppp/peers/home)

pty pptp <my.dyndns.adress> --nolaunchpppd # (from /etc/ppp/peers/home)
crtscts # (from /etc/ppp/options)
asyncmap 0 # (from /etc/ppp/options)
mtu 1416 # (from /etc/ppp/options.pptp)
lcp-echo-failure 4 # (from /etc/ppp/options)
lcp-echo-interval 30 # (from /etc/ppp/options)
show-password # (from /etc/ppp/options)
ipparam home # (from /etc/ppp/peers/home)
defaultroute # (from /etc/ppp/options.pptp)
proxyarp # (from /etc/ppp/options)
nobsdcomp # (from /etc/ppp/options.pptp)
nodeflate # (from /etc/ppp/options.pptp)
noipx # (from /etc/ppp/options)
using channel 15
Using interface ppp1
Connect: ppp1 <--> /dev/pts/2

sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x3074537d> <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x1 <mru 1524> <auth chap MD5> <magic 0x11a1505c> <pcomp> <accomp>]  <--------------My Router requests MS-CHAP-V2 ?

No auth is possible

sent [LCP ConfRej id=0x1 <auth chap MD5>] <---------------- My damn Tablet rejects MS-CHAP-V2 ?
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x3074537d> <pcomp> <accomp>]
rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x3074537d> <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x2 <mru 1524> <auth pap> <magic 0xf00c982c> <pcomp> <accomp>]
No auth is possible
sent [LCP ConfRej id=0x2 <auth pap>]
rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x3074537d> <pcomp> <accomp>]
rcvd [LCP TermReq id=0x3]
sent [LCP TermAck id=0x3]

Modem hangup
Connection terminated.
Script pptp <my.dyndns.adress> --nolaunchpppd finished (pid 2406), status = 0x0



Can anyone help me with this problem ? I'am now only interested in an unencryptet pptp tunnel. The mppe thing comes later :-) I Tryed PAP,CHAP and MS-CHAP, too.With the same result.(Of course i changed the "reject-strings" in the options.pptp file)
I read the Howto and FAQ on the sourceforce site of the ppp project,too.

Greetings,

chris

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