res iat rmi window color style windows系統 /var/ back

　　自己搭建好的vpn在windows系統中可以正常使用，但是在ubantu下就一直顯示：vpn連接失敗，vpn服務已停止。

　　一番百度之後才發現可能是自己在鏈接vpn服務的時候沒有選擇MEEP加密，而自己搭建的vpn服務器需要加密才能來連接，在嘗試選擇MEEP加密之後果然成功連接了。

　　在自己的系統系統日誌裏面查看了一下日誌信息，發現確實有加密信息的提示：

grep pppd /var/log/syslog | grep MPPE
Oct 5 12:18:19 lijun-Z5WAH pppd[7835]: LCP terminated by peer (MPPE required but peer negotiation failed)

Oct 5 12:35:13 lijun-Z5WAH pppd[9281]: LCP terminated by peer (MPPE required but peer negotiation failed)
Oct 5 12:36:47 lijun-Z5WAH pppd[9636]: LCP terminated by peer (MPPE required but peer negotiation failed)
Oct 5 12:37:10 lijun-Z5WAH pppd[9732]: MPPE 128-bit stateless compression enabled
Oct 5 12:40:38 lijun-Z5WAH pppd[9770]: MPPE disabled
Oct 5 12:41:01 lijun-Z5WAH pppd[10575]: MPPE 128-bit stateless compression enabled
Oct 5 12:45:04 lijun-Z5WAH pppd[10575]: MPPE disabled
Oct 5 12:52:01 lijun-Z5WAH pppd[12905]: LCP terminated by peer (MPPE required but peer negotiation failed)
Oct 5 15:47:45 lijun-Z5WAH pppd[2569]: LCP terminated by peer (MPPE required but peer negotiation failed)
Oct 5 15:52:35 lijun-Z5WAH pppd[2751]: LCP terminated by peer (MPPE required but peer negotiation failed)
Oct 5 15:52:56 lijun-Z5WAH pppd[2790]: LCP terminated by peer (MPPE required but peer negotiation failed)
Oct 5 15:54:11 lijun-Z5WAH pppd[2271]: LCP terminated by peer (MPPE required but peer negotiation failed)
Oct 5 15:56:23 lijun-Z5WAH pppd[2603]: MPPE 128-bit stateless compression enabled
　　查看系統日誌的命令：cat /var/log/syslog

　　搜索 grep /var/log/syslog | grep MEEP

ubantu vpn 連接失敗 : vpn 服務已停止