我想知道,如果输出
lsof -i
sshd 21880 root 3r IPv4 4843515 TCP somehost.lu.isp.com:ssh->d-XX-XXX.ITS.SOMEWHERE.COM:45037 (ESTABLISHED)
sshd 21882 mike 3u IPv4 4843515 TCP somehost.lu.isp.com:ssh->d-XX-XXX.ITS.SOMEWHERE.COM:45037 (ESTABLISHED)
sshd 23853 root 3u IPv6 960417 TCP *:ssh (LISTEN)
sshd 23853 root 4u IPv4 960419 TCP *:ssh (LISTEN)
sshd 24043 root 3r IPv4 4871654 TCP somehost.lu.isp.com:ssh->XXX.XX.XXX.XXX:42104 (ESTABLISHED)
sshd 24044 sshd 3u IPv4 4871654 TCP somehost.lu.isp.com:ssh->XXX.XX.XXX.XXX:42104 (ESTABLISHED)
这是否意味着有人已经登录系统并且当前正在做某事?或者意味着它只是试图登录?我不太确定。
有什么线索吗?谢谢