PandoraBox连接vpn时出现错误Non-zero Async Control Character Maps are not supported! 其大概意思是不支持非零Async控制字符映射！
- Wed May 10 21:19:44 2017 daemon.info pppd[3806]: Using interface pptp-vpn135
- Wed May 10 21:19:44 2017 daemon.notice pppd[3806]: Connect: pptp-vpn135 <--> pptp (202.198.96.135)
- Wed May 10 21:19:44 2017 daemon.warn pppd[3891]: Non-zero Async Control Character Maps are not supported!
- Wed May 10 21:19:44 2017 daemon.warn pppd[3891]: Non-zero Async Control Character Maps are not supported!
- Wed May 10 21:19:44 2017 daemon.info pppd[3806]: LCP terminated by peer (Q^Y#M-a^@<M-Mt^@^@^CM-.)
- Wed May 10 21:19:47 2017 daemon.notice pppd[3806]: Connection terminated.
- Wed May 10 21:19:47 2017 daemon.notice pppd[3806]: Modem hangup
编辑路由器中pppd中的options的文件，添加内容为
- refuse-eap
- refuse-pap
并且注释掉lock：
- [root@PandoraBox_FF6F1A:/root]#cat /etc/ppp/options
- #debug
- logfile /dev/null
- noipdefault
- noaccomp
- nopcomp
- nocrtscts
- refuse-eap
- refuse-pap
- #lock
- maxfail 0
- #PPP超时参数设置
- lcp-echo-failure 15 #发送间隔秒
- lcp-echo-interval 3 #重复次数
主要的原因是MS-CHAP v2验证方式