• https://srandby.org/digital-writing/index.html база про статичні та динамічні сайти
• https://www.unixsheikh.com/tutorials/who-is-listening-on-my-ports.html
• https://odysee.com/@AlphaNerd:8/how-to-secure-a-vps:d how to harden vps iptables prykol
• https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/snappy-detecting-rogue-and-fake-80211-wireless-access-points-through-fingerprinting-beacon-management-frames/
• використовуйте fail2ban

checking open ports

nc -z -v 192.168.1.6 1-65535 2>&1 | grep -v 'Connection refused'