Cybersecurity on Linux

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