Hey Danny, It would probably be more useful if you attach also your freeradius configuration and the debug log of freeradius when ran with -X argument for debugging. Also consider checking that rc_avpair attribute. Regards, Liran. On Jan 3, 2008 1:59 PM, Danny Milshtein <danny@videocells.com> wrote:

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 192.168.8.244control 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 192.168.8.244control 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

No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.17.13/1207 - Release Date: 1/2/2008 11:29 AM

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