☰

永久连接中国ip

tag-icon • tag-icon ubuntu security iftop
永久连接中国ip

我的 Ubuntu 服务器最近遇到了暴力攻击问题。所以我安装了fail2ban，我认为问题已经消失了。

但是当我检查时，iftop我看到一个中国IP永久连接。

iftop
                12.5Kb          25.0Kb          37.5Kb          50.0Kb    62.5Kb
mqqqqqqqqqqqqqqqvqqqqqqqqqqqqqqqvqqqqqqqqqqqqqqqvqqqqqqqqqqqqqqqvqqqqqqqqqqqqqqq
Ubuntu-1510-wily-64-minim  => 218.201.37.134             4.22Kb  4.12Kb  4.13Kb
                           <=                            6.33Kb  6.19Kb  6.20Kb

qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
TX:             cum:    205KB   peak:   7.10Kb  rates:   5.38Kb  5.12Kb  5.32Kb
RX:                     233KB           8.37Kb           6.48Kb  6.34Kb  6.46Kb
TOTAL:                  438KB           15.5Kb           11.9Kb  11.5Kb  11.8Kb

这是正常现象还是我有问题。

服务器上仅运行 Teamspeak³ 一个 Minecraft。

编辑1：

lsof -i -n
COMMAND    PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
sshd       656 root    3u  IPv4  16856      0t0  TCP *:ssh (LISTEN)
sshd       656 root    4u  IPv6  16858      0t0  TCP *:ssh (LISTEN)
ts3server  898 root   32u  IPv4  17853      0t0  TCP *:30033 (LISTEN)
ts3server  898 root   33u  IPv6  17854      0t0  TCP *:30033 (LISTEN)
ts3server  898 root   34u  IPv4  16985      0t0  UDP myip:34773->194.97.114.3:2010
ts3server  898 root   39u  IPv4  17862      0t0  UDP *:9987
ts3server  898 root   40u  IPv6  17863      0t0  UDP *:9987
ts3server  898 root   45u  IPv4  17867      0t0  TCP *:10011 (LISTEN)
ts3server  898 root   46u  IPv6  17868      0t0  TCP *:10011 (LISTEN)
java      1050 root   46u  IPv6  20495      0t0  TCP *:25565 (LISTEN)
sshd      1220 root    3u  IPv4  21663      0t0  TCP *:1022 (LISTEN)
sshd      1220 root    4u  IPv6  21665      0t0  TCP *:1022 (LISTEN)
sshd      4347 root    3u  IPv4  55148      0t0  TCP myip:ssh->mysship:50031 (ESTABLISHED)

没有任何登录（通过最后检查）不是来自我的。

答案1

请尝试这样的命令：

netstat -n |grep 218.201.37.134

相关内容