pppd:由对等方终止的LCP (对等方拒绝认证)

Question

我很困惑，VPN客户端在我的虚拟机上完美无缺地工作，今天当我尝试它无法连接到L2TP VPN服务器时.这是我客户端VM的日志，有人能帮忙吗？我没有改变任何东西(故意)，我不明白为什么突然间同伴不想认证，这是预期的，在过去还是一个新的东西？我的平板电脑仍然能像以前一样连接起来。

Sep  4 22:29:51 ubuntu64 ipsec_setup: ...Openswan IPsec started
Sep  4 22:29:51 ubuntu64 L2tpIPsecVpnControlDaemon: Command ipsec setup start finished with exit code 0
Sep  4 22:29:51 ubuntu64 L2tpIPsecVpnControlDaemon: Executing command service xl2tpd start
Sep  4 22:29:51 ubuntu64 xl2tpd[4665]: setsockopt recvref[30]: Protocol not available
Sep  4 22:29:51 ubuntu64 ipsec__plutorun: adjusting ipsec.d to /etc/ipsec.d
Sep  4 22:29:51 ubuntu64 xl2tpd[4665]: This binary does not support kernel L2TP.
Sep  4 22:29:51 ubuntu64 L2tpIPsecVpnControlDaemon: Command service xl2tpd start finished with exit code 0
Sep  4 22:29:51 ubuntu64 pluto: adjusting ipsec.d to /etc/ipsec.d
Sep  4 22:29:51 ubuntu64 xl2tpd[4666]: xl2tpd version xl2tpd-1.3.6 started on ubuntu64 PID:4666
Sep  4 22:29:51 ubuntu64 xl2tpd[4666]: Written by Mark Spencer, Copyright (C) 1998, Adtran, Inc.
Sep  4 22:29:51 ubuntu64 xl2tpd[4666]: Forked by Scott Balmos and David Stipp, (C) 2001
Sep  4 22:29:51 ubuntu64 xl2tpd[4666]: Inherited by Jeff McAdams, (C) 2002
Sep  4 22:29:51 ubuntu64 xl2tpd[4666]: Forked again by Xelerance (www.xelerance.com) (C) 2006
Sep  4 22:29:51 ubuntu64 xl2tpd[4666]: Listening on IP address 0.0.0.0, port 1701
Sep  4 22:29:51 ubuntu64 ipsec__plutorun: 002 added connection description "CBER_L2TP_CABLE"
Sep  4 22:29:51 ubuntu64 L2tpIPsecVpnControlDaemon: Executing command ipsec auto --ready
Sep  4 22:29:52 ubuntu64 ipsec__plutorun: 002 added connection description "CBER_L2TP_ADSL"
Sep  4 22:29:52 ubuntu64 L2tpIPsecVpnControlDaemon: Command ipsec auto --ready finished with exit code 0
Sep  4 22:29:52 ubuntu64 L2tpIPsecVpnControlDaemon: Executing command ipsec auto --up CBER_L2TP_CABLE
Sep  4 22:29:52 ubuntu64 L2tpIPsecVpnControlDaemon: Command ipsec auto --up CBER_L2TP_CABLE finished with exit code 0
Sep  4 22:29:53 ubuntu64 L2tpIPsecVpnControlDaemon: Closing client connection
Sep  4 22:29:53 ubuntu64 xl2tpd[4666]: Connecting to host yin-cable.dyndns.biz, port 1701
Sep  4 22:29:55 ubuntu64 xl2tpd[4666]: Connection established to 999.999.999.999, 1701.  Local: 19801, Remote: 56042 (ref=0/0).
Sep  4 22:29:55 ubuntu64 xl2tpd[4666]: Calling on tunnel 19801
Sep  4 22:29:55 ubuntu64 xl2tpd[4666]: check_control: Received out of order control packet on tunnel 56042 (got 0, expected 1)
Sep  4 22:29:55 ubuntu64 xl2tpd[4666]: handle_packet: bad control packet!
Sep  4 22:29:55 ubuntu64 xl2tpd[4666]: check_control: Received out of order control packet on tunnel 56042 (got 0, expected 1)
Sep  4 22:29:55 ubuntu64 xl2tpd[4666]: handle_packet: bad control packet!
Sep  4 22:29:55 ubuntu64 xl2tpd[4666]: Call established with 999.999.999.999, Local: 5753, Remote: 13038, Serial: 1 (ref=0/0)
Sep  4 22:29:55 ubuntu64 xl2tpd[4666]: start_pppd: I'm running: 
Sep  4 22:29:55 ubuntu64 xl2tpd[4666]: "/usr/sbin/pppd" 
Sep  4 22:29:55 ubuntu64 xl2tpd[4666]: "passive" 
Sep  4 22:29:55 ubuntu64 xl2tpd[4666]: "nodetach" 
Sep  4 22:29:55 ubuntu64 xl2tpd[4666]: ":" 
Sep  4 22:29:55 ubuntu64 xl2tpd[4666]: "file" 
Sep  4 22:29:55 ubuntu64 xl2tpd[4666]: "/etc/ppp/CBER_L2TP_CABLE.options.xl2tpd" 
Sep  4 22:29:55 ubuntu64 xl2tpd[4666]: "/dev/pts/4" 
Sep  4 22:29:55 ubuntu64 pppd[4725]: Plugin passprompt.so loaded.
Sep  4 22:29:55 ubuntu64 pppd[4725]: pppd 2.4.5 started by root, uid 0
Sep  4 22:29:55 ubuntu64 pppd[4725]: Using interface ppp0
Sep  4 22:29:55 ubuntu64 pppd[4725]: Connect: ppp0 <--> /dev/pts/4
Sep  4 22:29:55 ubuntu64 NetworkManager[794]:    SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
Sep  4 22:29:55 ubuntu64 NetworkManager[794]:    SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found.
Sep  4 22:29:55 ubuntu64 NetworkManager[794]: <warn> /sys/devices/virtual/net/ppp0: couldn't determine device driver; ignoring...
Sep  4 22:29:55 ubuntu64 pppd[4725]: LCP terminated by peer (peer refused to authenticate)
Sep  4 22:29:55 ubuntu64 xl2tpd[4666]: control_finish: Connection closed to 999.999.999.999, serial 1 ()
Sep  4 22:29:55 ubuntu64 xl2tpd[4666]: Terminating pppd: sending TERM signal to pid 4725
Sep  4 22:29:55 ubuntu64 pppd[4725]: Terminating on signal 15
Sep  4 22:29:55 ubuntu64 pppd[4725]: Modem hangup
Sep  4 22:29:55 ubuntu64 pppd[4725]: Connection terminated.
Sep  4 22:29:55 ubuntu64 NetworkManager[794]:    SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
Sep  4 22:29:55 ubuntu64 pppd[4725]: Exit.

Answer 1

您的L2TP客户端在连接过程中丢失密码。您必须在文件中添加连接参数，例如下面的用户名短语-密码"Your_pass“。

nano /etc/ppp/Your_connection_name.options.xl2tpd

您应该在文件的底部添加：

password "Your_pass"

但请记住：

• 保留纯文本密码不是个好主意，
• 更改设置后，您的密码将被重写，并将取消密码。