===== Nmap =====
=== Scan ports on IP ===
<code>
nmap -sT <IP>
</code>

=== Scan ports on subnet ===
<code>
nmap -sT <Net/cidr>
</code>

=== Scan for vulnerabilities ===
<code>
nmap --script vuln <IP>
</code>

=== Scan for specific port ===
<code>
nmap -sT -p <PORT> <IP>
</code>

=== Remarks ===
If you want to check your public IP, you need to run nmap from a location outside of your LAN.