How to Do Ping Scans with NMAP

Start learning cybersecurity with CBT Nuggets. courses.cbt.gg...
In this video, Bob Salmans covers using NMAP to perform ping scans. Even for something as simple as finding a device you plugged in and now can't discover, NMAP can find devices for you - even ones with ICMP disabled. Bob breaks down NMAP ping scans into these topics:
How NMAP decides what to scan
What the different NMAP ping scan types are (sn, PS, PA, PU)
What ports to attempt on a Microsoft or Linux network if port 80 won't suffice
NMAP starts by performing an ICMP ping across the entirety of the subnet. Whatever is alive, ICMP detects it and scans it. However, if ICMP is disabled, you'll need to use the disabled ping option. Do that with the "-Pn" option. What this does is instruct NMAP to go through every IP address on the subnet, ensuring you don't miss anything.
There are different ping scan types you can utilize depending on what you're trying to accomplish on your network. Using the -sn option produces a ping scan via ICMP - this doesn't include port scanning, though. If you suspect ICMP is turned off, there are other options. The -PS option will send a TCP SYN ping - if it responds a certain way, it knows it's alive. There are also -PA and -PU options for TCP ACK and UDP. These all default to port 80, so you may have to change that according to what you're searching for.
🌐 Download the Free Ultimate Networking Cert Guide: blog.cbt.gg/2it7
⬇️ 13-Week Study Plan: CCNA (200-301): blog.cbt.gg/3wuq
Start learning with CBT Nuggets:
• Penetration Testing with Linux Tools | courses.cbt.gg...
• Linux Security | courses.cbt.gg...
• Linux Troubleshooting | courses.cbt.gg...
• Everything Linux | courses.cbt.gg...

[@omairtech6711]

This was really good and to the point. No mindless rambling many others do.

[@citoxe1]

Thank you

[@bglrk]

thank you!!