Problem with pptp and freeradius

[Danny Milshtein <danny@videocells.com>]

Hi,

 

When trying to connect from VPN client with chap method I get the following error messages from VPN server

 

-          GRE: Bad checksum from pppd

-          rc_avpair_new: unknown attribute

 

When testing without radius plug-in (chap-secret file) work fine

 

I'm using pptp version 1.3

freeradius 1.1.3

 

Attached my configuration files

 

Thanks

 

Danny

 

 

 

 

# /var/log/messages

#

Jan  3 14:42:32 host-8-220 pptpd[31170]: CTRL: Client 192.168.8.244 control connection started

Jan  3 14:42:32 host-8-220 pptpd[31170]: CTRL: Starting call (launching pppd, opening GRE)

Jan  3 14:42:32 host-8-220 pppd[31171]: Plugin radius.so loaded.

Jan  3 14:42:32 host-8-220 pppd[31171]: RADIUS plugin initialized.

Jan  3 14:42:32 host-8-220 pppd[31171]: Plugin radattr.so loaded.

Jan  3 14:42:32 host-8-220 pppd[31171]: RADATTR plugin initialized.

Jan  3 14:42:32 host-8-220 pppd[31171]: pppd options in effect:

Jan  3 14:42:32 host-8-220 pppd[31171]: debug                # (from /etc/ppp/options.pptpd)

Jan  3 14:42:32 host-8-220 pppd[31171]: idle 30               # (from /etc/ppp/options.pptpd)

Jan  3 14:42:32 host-8-220 pppd[31171]: dump                 # (from /etc/ppp/options.pptpd)

Jan  3 14:42:32 host-8-220 pppd[31171]: plugin radius.so              # (from /etc/ppp/options.pptpd)

Jan  3 14:42:32 host-8-220 pppd[31171]: plugin radattr.so              # (from /etc/ppp/options.pptpd)

Jan  3 14:42:32 host-8-220 pppd[31171]: auth                   # (from /etc/ppp/options.pptpd)

Jan  3 14:42:32 host-8-220 pppd[31171]: name pptp                      # (from /etc/ppp/options.pptpd)

Jan  3 14:42:32 host-8-220 pppd[31171]: 115200              # (from command line)

Jan  3 14:42:32 host-8-220 pppd[31171]: lock                   # (from /etc/ppp/options.pptpd)

Jan  3 14:42:32 host-8-220 pppd[31171]: local                  # (from command line)

Jan  3 14:42:32 host-8-220 pppd[31171]: asyncmap 0                   # (from /etc/ppp/options.pptpd)

Jan  3 14:42:32 host-8-220 pppd[31171]: mru 1000                       # (from /etc/ppp/options.pptpd)

Jan  3 14:42:32 host-8-220 pppd[31171]: mtu 1000                       # (from /etc/ppp/options.pptpd)

Jan  3 14:42:32 host-8-220 pppd[31171]: lcp-echo-failure 3                        # (from /etc/ppp/options.pptpd)

Jan  3 14:42:32 host-8-220 pppd[31171]: lcp-echo-interval 10                     # (from /etc/ppp/options.pptpd)

Jan  3 14:42:32 host-8-220 pppd[31171]: ipparam 192.168.8.244                # (from command line)

Jan  3 14:42:32 host-8-220 pppd[31171]: proxyarp                        # (from /etc/ppp/options.pptpd)

Jan  3 14:42:32 host-8-220 pppd[31171]: 192.168.1.107:192.168.2.1                      # (from command line)

Jan  3 14:42:32 host-8-220 pppd[31171]: nobsdcomp                    # (from /etc/ppp/options.pptpd)

Jan  3 14:42:32 host-8-220 pppd[31171]: pppd 2.4.4 started by root, uid 0

Jan  3 14:42:32 host-8-220 pppd[31171]: Using interface ppp0

Jan  3 14:42:32 host-8-220 pppd[31171]: Connect: ppp0 <--> /dev/pts/2

Jan  3 14:42:32 host-8-220 pptpd[31170]: GRE: Bad checksum from pppd.

Jan  3 14:42:32 host-8-220 pppd[31171]: rc_avpair_new: unknown attribute 6

Jan  3 14:42:32 host-8-220 pppd[31171]: rc_avpair_new: unknown attribute 7

Jan  3 14:42:32 host-8-220 pppd[31171]: rc_avpair_new: unknown attribute 1

Jan  3 14:42:32 host-8-220 pppd[31171]: rc_avpair_new: unknown attribute 60

Jan  3 14:42:32 host-8-220 pppd[31171]: rc_avpair_new: unknown attribute 3

Jan  3 14:42:32 host-8-220 pppd[31171]: rc_avpair_new: unknown attribute 31

Jan  3 14:42:32 host-8-220 pppd[31171]: rc_avpair_new: unknown attribute 32

Jan  3 14:42:32 host-8-220 pppd[31171]: Peer username failed CHAP authentication

Jan  3 14:42:32 host-8-220 pppd[31171]: Connection terminated.

Jan  3 14:42:32 host-8-220 pppd[31171]: Exit.

Jan  3 14:42:32 host-8-220 pptpd[31170]: GRE: read(fd=6,buffer=804e560,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs

Jan  3 14:42:32 host-8-220 pptpd[31170]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)

Jan  3 14:42:32 host-8-220 pptpd[31170]: CTRL: Client 192.168.8.244 control connection finished

 

 

# /etc/ppp/options.pptpd

#

name pptp

debug

dump

lock

nobsdcomp

auth

mtu 1000

mru 1000

lcp-echo-failure 3

lcp-echo-interval 10

idle 30

plugin radius.so

plugin radattr.so

 

# /etc/radiusclient/radiusclient.conf

#

auth_order      radius

login_tries     4

login_timeout   60

nologin /etc/nologin

issue   /etc/radiusclient/issue

authserver      localhost:1812

acctserver      localhost:1813

servers         /etc/radiusclient/servers

dictionary      /etc/radiusclient/dictionary

login_radius    /usr/sbin/login.radius

seqfile         /var/run/radius.seq

mapfile         /etc/radiusclient/port-id-map

default_realm

radius_timeout  10

radius_retries  3

nas_identifier surdemo

login_local     /bin/login

 

# /etc/radiusclient/servers

#

localhost   test123

 

 

 

Danny Milshtein

 

VideoCells Ltd.

Tel +972-3-9291516

Fax +972-3-9291513

Mobile +972-52-8388561

danny@videocells.com

 

 

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Version: 7.5.516 / Virus Database: 269.17.13/1207 - Release Date: 1/2/2008 11:29 AM