Owens J. Shell Scripting For Cybersecurity. Mas... ((full)) Official

Using only built-in tools ( /dev/tcp , nslookup , dig , arp , ss ), he builds lightweight scanners that evade common detection patterns. A sample snippet checks for unexpected listening ports:

For ethical hackers and penetration testers, shell scripting is often the difference between a successful engagement and a failed one. Owens J. Shell scripting for Cybersecurity. Mas...

– Finds all IPs with more than 15 simultaneous ESTABLISHED connections to port 443 (potential DDoS or botnet beacon). Using only built-in tools ( /dev/tcp , nslookup