Port Scan
Nmap
# https://github.com/nmap/nmap
./configure
make
make install
nmap -sC -sV example.com
nmap example.com
https://3os.org/penetration-testing/cheatsheets/nmap-cheatsheet/
Naabu
# https://github.com/projectdiscovery/naabu
naabu -p 80,443,21-23 -host example.com
cat list | naabu -top-ports 100 -ep 80,443,8080,8443