連上PPTP Server後，為何會自動斷線 - Linux

請問有架過PPTP Server的前輩

當我client連上server後，過一段時間後會自動斷線，請問是什麼原因造成的

以下是/var/log/messages出現的訊息

May 19 18:09:07 localhost pptpd[20363]: MGR: dropped small initial connection
May 19 18:09:07 localhost pptpd[21204]: CTRL: Client 192.168.101.15 control
connection started
May 19 18:09:10 localhost pptpd[21204]: CTRL: Starting call (launching pppd,
opening GRE)
May 19 18:09:10 localhost pppd[21205]: Plugin /etc/ppp/plugins/radius.so
loaded.
May 19 18:09:10 localhost pppd[21205]: RADIUS plugin initialized.
May 19 18:09:10 localhost pppd[21205]: pppd options in effect:
May 19 18:09:10 localhost pppd[21205]: debug#011#011# (from
/etc/ppp/options.pptpd)
May 19 18:09:10 localhost pppd[21205]: logfile /var/log/pptpd.log#011#011#
(from /etc/ppp/options.pptpd)
May 19 18:09:10 localhost pppd[21205]: dump#011#011# (from
/etc/ppp/options.pptpd)
May 19 18:09:10 localhost pppd[21205]: plugin
/etc/ppp/plugins/radius.so#011#011# (from /etc/ppp/options)
May 19 18:09:10 localhost pppd[21205]: radius-config-file
/etc/ppp/radius/radiusclient.conf#011#011# (from /etc/ppp/options)
May 19 18:09:10 localhost pppd[21205]: 115200#011#011# (from command line)
May 19 18:09:10 localhost pppd[21205]: lock#011#011# (from /etc/ppp/options)
May 19 18:09:10 localhost pppd[21205]: crtscts#011#011# (from
/etc/ppp/options)
May 19 18:09:10 localhost pppd[21205]: local#011#011# (from command line)
May 19 18:09:10 localhost pppd[21205]: nopcomp#011#011# (from
/etc/ppp/options)
May 19 18:09:10 localhost pppd[21205]: ipparam 192.168.101.15#011#011# (from
command line)
May 19 18:09:10 localhost pppd[21205]: ms-dns xxx # [don't know how to print
value]#011#011# (from /etc/ppp/options.pptpd)
May 19 18:09:10 localhost pppd[21205]: 192.168.101.1:10.0.0.6#011#011# (from
command line)
May 19 18:09:10 localhost pppd[21205]: nobsdcomp#011#011# (from
/etc/ppp/options)
May 19 18:09:10 localhost pppd[21205]: nodeflate#011#011# (from
/etc/ppp/options)
May 19 18:09:10 localhost pppd[21205]: pppd 2.4.4 started by root, uid 0
May 19 18:09:10 localhost pppd[21205]: Using interface ppp0
May 19 18:09:10 localhost pppd[21205]: Connect: ppp0 <--> /dev/pts/3
May 19 18:09:10 localhost pptpd[21204]: GRE: Bad checksum from pppd.
May 19 18:09:13 localhost pppd[21205]: local IP address 192.168.101.1
May 19 18:09:13 localhost pppd[21205]: remote IP address 10.0.0.6
May 19 18:13:00 localhost pptpd[21204]: CTRL: Session timed out, ending call
May 19 18:13:00 localhost pppd[21205]: Modem hangup
May 19 18:13:00 localhost pppd[21205]: Connect time 3.8 minutes.
May 19 18:13:00 localhost pppd[21205]: Sent 0 bytes, received 144 bytes.
May 19 18:13:00 localhost pppd[21205]: Connection terminated.
May 19 18:13:00 localhost pppd[21205]: Exit.
May 19 18:13:00 localhost pptpd[21204]: CTRL: Client 192.168.101.15 control
connection finished
May 19 18:13:00 localhost pptpd[21204]: CTRL: EOF or bad error reading ctrl
packet length.
May 19 18:13:00 localhost pptpd[21204]: CTRL: couldn't read packet header
(exit)
May 19 18:13:00 localhost pptpd[21204]: CTRL: Fatal error reading control
message in disconnect sequence


這是我的設定檔內容
#cat /etc/ppp/options
lock
crtscts
nobsdcomp
nodeflate
nopcomp
plugin /etc/ppp/plugins/radius.so
radius-config-file /etc/ppp/radius/radiusclient.conf

#cat /etc/pptpd.conf
option /etc/ppp/options.pptpd
debug
localip 192.168.101.1
remoteip 10.0.0.6-100

#cat /etc/ppp/options.pptpd
dump
logfile /var/log/pptpd.log
debug
ms-dns 192.168.1.2

--