中国からVPN接続してきた件

LinuxサーバにPPTPでVPNの環境を作ってiPhoneから接続できるようにしていたんだけど、今日、中国から接続してきた。

以下がログです。


Dec 28 17:32:00 xxxxxxxx pptpd[19383]: CTRL: Client 223.198.131.149 control connection started
Dec 28 17:32:02 xxxxxxxx pptpd[19383]: CTRL: Starting call (launching pppd, opening GRE)
Dec 28 17:32:02 xxxxxxxx pppd[19386]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded.
Dec 28 17:32:02 xxxxxxxx pppd[19386]: pppd 2.4.4 started by root, uid 0
Dec 28 17:32:02 xxxxxxxx pppd[19386]: Using interface ppp0
Dec 28 17:32:02 xxxxxxxx pppd[19386]: Connect: ppp0 <--> /dev/pts/0
Dec 28 17:32:08 xxxxxxxx pppd[19386]: No CHAP secret found for authenticating vpn
Dec 28 17:32:08 xxxxxxxx pppd[19386]: Peer vpn failed CHAP authentication
Dec 28 17:32:09 xxxxxxxx pptpd[19407]: CTRL: Client 223.198.131.149 control connection started
Dec 28 17:32:10 xxxxxxxx pptpd[19407]: CTRL: Starting call (launching pppd, opening GRE)
Dec 28 17:32:10 xxxxxxxx pppd[19408]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded.
Dec 28 17:32:10 xxxxxxxx pppd[19408]: pppd 2.4.4 started by root, uid 0
Dec 28 17:32:10 xxxxxxxx pppd[19408]: Using interface ppp1
Dec 28 17:32:10 xxxxxxxx pppd[19408]: Connect: ppp1 <--> /dev/pts/1
Dec 28 17:32:14 xxxxxxxx pppd[19386]: Connection terminated.
Dec 28 17:32:14 xxxxxxxx pppd[19386]: Modem hangup
Dec 28 17:32:14 xxxxxxxx pppd[19386]: Exit.
Dec 28 17:32:14 xxxxxxxx pptpd[19383]: GRE: read(fd=6,buffer=610860,len=8196) from PTY failed: status = -1 error = Input/output error, usu
ally caused by unexpected termination of pppd, check option syntax and pppd logs
Dec 28 17:32:14 xxxxxxxx pptpd[19383]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)
Dec 28 17:32:14 xxxxxxxx pptpd[19383]: CTRL: Client 223.198.131.149 control connection finished
Dec 28 17:32:31 xxxxxxxx pppd[19408]: No CHAP secret found for authenticating vpn
Dec 28 17:32:31 xxxxxxxx pppd[19408]: Peer vpn failed CHAP authentication
Dec 28 17:32:31 xxxxxxxx pppd[19408]: Connection terminated.
Dec 28 17:32:31 xxxxxxxx pppd[19408]: Exit.
Dec 28 17:32:31 xxxxxxxx pptpd[19407]: GRE: read(fd=6,buffer=610860,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs
Dec 28 17:32:31 xxxxxxxx pptpd[19407]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)
Dec 28 17:32:31 xxxxxxxx pptpd[19407]: CTRL: Client 223.198.131.149 control connection finished

やっぱり、中国人は怖いですね～

このIPアドレスを調べてみると、以下の場所でした。

接続できていないと思うのだけど、中国人は何をするか判らないので、しばらくはVPNを切っておくことにしました。