连接vpn报错

admin

$ P1 z0 v3 o  OOct 19 11:25:29 localhost pptpd[4046]: CTRL: Client 218.241.27.42 control connection started
Oct 19 11:25:29 localhost pptpd[4046]: CTRL: Starting call (launching pppd, opening GRE)
8 b- Q5 T3 d8 K6 z' r3 u/ ^Oct 19 11:25:29 localhost pppd[4047]: In file /etc/ppp/options.pptpd: unrecognized option 'Authentication'
Oct 19 11:25:29 localhost pptpd[4046]: GRE: read(fd=6,buffer=6124a0,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs
Oct 19 11:25:29 localhost pptpd[4046]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)
Oct 19 11:25:29 localhost pptpd[4046]: CTRL: Client 218.241.27.42 control connection finished

admin

Oct 19 11:34:43 localhost pptpd[4111]: CTRL: Client 218.241.27.42 control connection started
: S  e( X: n$ }+ P& v' g" |Oct 19 11:34:43 localhost pptpd[4111]: CTRL: Starting call (launching pppd, opening GRE)
. W# G, r+ ]) Q; n. _( R% ZOct 19 11:34:43 localhost pppd[4112]: Plugin /usr/lib64/pptpd/pptpd-logwtmp.so loaded.
Oct 19 11:34:43 localhost pppd[4112]: pppd 2.4.5 started by www, uid 0
! P. ~# Q. s: eOct 19 11:34:43 localhost pppd[4112]: Using interface ppp0
9 a4 Q8 ?. H1 z4 U7 R* B( |Oct 19 11:34:43 localhost pppd[4112]: Connect: ppp0 <--> /dev/pts/1
! \5 m1 x$ Z. b4 X; tOct 19 11:35:13 localhost pppd[4112]: LCP: timeout sending Config-Requests
9 y/ P% X% {" [8 DOct 19 11:35:13 localhost pppd[4112]: Connection terminated.
. p1 f# _! O  O2 _# [- yOct 19 11:35:13 localhost pppd[4112]: Modem hangup
Oct 19 11:35:13 localhost pppd[4112]: Exit.
Oct 19 11:35:13 localhost pptpd[4111]: GRE: read(fd=6,buffer=6124a0,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs
( a5 _7 k5 {; P0 b' C; n3 _Oct 19 11:35:13 localhost pptpd[4111]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)
( ~6 ^5 P2 N+ d6 X& UOct 19 11:35:13 localhost pptpd[4111]: CTRL: Client 218.241.27.42 control connection finished

admin

相关配置文件
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, p) `. t4 L( `2 Q3 I[root@localhost ~]# more /etc/pptpd.conf |grep -v ^#
option /etc/ppp/options.pptpd
) X  X  d9 L/ B7 y# ]debug /var/log/pptpd.log
; P6 d3 z; o6 x! `+ H; {localip 10.10.1.20
2 H4 j: e5 `9 V& Q& g$ W, N) Zremoteip 10.10.1.30-254
: g5 _9 }3 {% S. l- J9 R5 c8 l[root@localhost ~]# more /etc/ppp/options.pptpd|grep -v ^#
name pptpd
refuse-pap
& J4 P; K3 x6 h* B* I" c0 Vrefuse-chap
refuse-mschap
require-mschap-v2
require-mppe-128
# _; c, \" N5 n7 Bms-dns 221.228.255.1
ms-dns 223.6.6.6
2 g1 y2 R9 s$ v8 Z7 Vproxyarp
lock
4 G7 m$ L+ P8 g, D8 Wnobsdcomp
1 \" n! h! R5 K! nnovj
novjccomp
& ], l# h5 O& }5 a( @: Fnologfd

, T  ?. G4 ?, E% L" y5 ~我使用的centos 6.5 64bit ，相关安装包如下：
[root@localhost ~]# rpm -qa |grep "ppp*"
. ]0 P3 q2 ]9 i' Ylibreport-plugin-rhtsupport-2.0.9-19.el6.centos.x86_64
# @5 i/ O! k, q& V  bdevice-mapper-event-libs-1.02.79-8.el6.x86_64
  h4 M" y5 K* w' j" K5 Oppl-0.10.2-11.el6.x86_64
8 A9 N0 H; B- S/ z3 \pptpd-1.4.0-3.el6.x86_64
, k6 e0 @4 L* k' B- b( M7 _  Pabrt-addon-ccpp-2.0.8-21.el6.centos.x86_64
device-mapper-1.02.79-8.el6.x86_64
* ?  o* V! T! U$ G1 A0 \device-mapper-event-1.02.79-8.el6.x86_64
tcp_wrappers-7.6-57.el6.x86_64
1 L' X; D+ {% t6 C7 o; j; x& Acloog-ppl-0.15.7-1.2.el6.x86_64
snappy-1.1.0-1.el6.x86_64
kernel_ppp_mppe-1.0.2-3dkms.noarch
pptp-1.7.2-8.1.el6.x86_64
3 Y/ H) W5 h' c. n; Ddevice-mapper-libs-1.02.79-8.el6.x86_64
tcp_wrappers-libs-7.6-57.el6.x86_64
. h! [/ L( r. K& Qcpp-4.4.7-4.el6.x86_64
device-mapper-persistent-data-0.2.8-2.el6.x86_64
ppp-2.4.5-5.el6.x86_64
. V! ]; T* M7 j8 W' F
现在不知道问题出在什么地方，麻烦各位帮忙看看，谢谢！！！

  S9 A! Z& Y1 t5 ~+ K
已经解决，修改配置
options.pptpd把
8 a6 k/ s9 ~" prequire-mschap-v2
require-mppe-128
这两行注释掉即可。如下图：

8 k* J& u3 Z; L
3 X* Z5 ~$ _% M5 O碰到了同样的问题，不用注释那两行，是密码文件没有配置好，需要再检查下/etc/ppp/chap-secrets  这个文件的配置
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