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MS-CHAPv2 Success packet is badly formed

  • fbrumm
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02 Apr 2012 20:35 #71769 by fbrumm
Hello, we have a 3300v+
Hardware Version : 1.0
Firmware Version : 2.6.3 (EN)
Build Date&Time : 2010-08-17 14:31:01

When PPTP authenticates locally it works fine with Windows, Mac and Linux.

However when we introduce a Windows 2008R2 using NPS as a Radius server; the windows clients connect just fine but the MAC and Linux clients get the following error:

pppd[3625]: MS-CHAPv2 Success packet is badly formed.
Any ideas?

++the log++
pppd[3625]: Using interface ppp0
NetworkManager[423]: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
NetworkManager[423]: SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found.
pppd[3625]: Connect: ppp0 <--> /dev/pts/0
pptp[3628]: nm-pptp-service-3322 log[main:pptp.c:314]: The synchronous pptp option is NOT activated
pptp[3635]: nm-pptp-service-3322 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 1 'Start-Control-Connection-Request'
pptp[3635]: nm-pptp-service-3322 log[ctrlp_disp:pptp_ctrl.c:739]: Received Start Control Connection Reply
pptp[3635]: nm-pptp-service-3322 log[ctrlp_disp:pptp_ctrl.c:773]: Client connection established.
pptp[3635]: nm-pptp-service-3322 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 7 'Outgoing-Call-Request'
pptp[3635]: nm-pptp-service-3322 log[ctrlp_disp:pptp_ctrl.c:858]: Received Outgoing Call Reply.
pptp[3635]: nm-pptp-service-3322 log[ctrlp_disp:pptp_ctrl.c:897]: Outgoing call established (call ID 0, peer's call ID 138).
pppd[3625]: MS-CHAPv2 Success packet is badly formed.
pppd[3625]: CHAP authentication failed
NetworkManager[423]: VPN plugin failed: 1
pppd[3625]: Connection terminated.
avahi-daemon[418]: Withdrawing workstation service for ppp0.
pptp[3628]: nm-pptp-service-3322 warn[decaps_hdlc:pptp_gre.c:204]: short read (-1): Input/output error
pptp[3628]: nm-pptp-service-3322 warn[decaps_hdlc:pptp_gre.c:216]: pppd may have shutdown, see pppd log
pptp[3635]: nm-pptp-service-3322 log[callmgr_main:pptp_callmgr.c:234]: Closing connection (unhandled)
pptp[3635]: nm-pptp-service-3322 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 12 'Call-Clear-Request'
NetworkManager[423]: VPN plugin failed: 1
pptp[3635]: nm-pptp-service-3322 log[call_callback:pptp_callmgr.c:79]: Closing connection (call state)
NetworkManager[423]: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
pppd[3625]: Exit.
NetworkManager[423]: VPN plugin state changed: 6
NetworkManager[423]: VPN plugin state change reason: 0
NetworkManager[423]: error disconnecting VPN: Could not process the request because no VPN connection was active.

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20 Apr 2012 15:19 #71965 by frag
Isn't MS-CHAPv2 a microsoft propriety technology? Does it even work on other operating systems?

Dunno, maybe someone can enlighten us.

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  • fbrumm
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20 Apr 2012 15:43 #71966 by fbrumm
Thanks for your post, MS-CHAPv2 on mac and Linux works with the router, just not if you introduce a Windows Radius server for authentication.

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