Cybersecurity on Linux

$ nmap -p- 192.168.2.4
$ netstat -tuln
$ sudo tcpdump -i eth0
$ find / -perm /6000 -type f 2>/dev/null
$ grep PASS /etc/login.defs
$ ssh-vulnkey -a
$ sudo apt install chkrootkit
$ chkrootkit
$ lsof -i -P -n
$ nikto -h http://192.168.1.10
$ grep -r "password" /etc/
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