Cheatography
https://cheatography.com
Cheat Sheet containing the Nmap Basics
(Based on the TryHackMe course and some other OSINT...)
This is a draft cheat sheet. It is a work in progress and is not finished yet.
Number of Ports on a Computer
Port Statuses
Open |
Closed |
Filtered (Firewall) |
Usual Ports (TCP/UDP)
HTTP |
80 |
HTTPS |
443 |
Windows NETBIOS |
139 |
SMB |
445 |
SMTP |
587 or 25 (old) |
RDP |
3389 |
FTP |
20 & 21 |
SSH |
22 |
DNS |
53 |
Trivia
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How are Network Connections made? Network connections are made between two ports – an open port listening on the server and a randomly selected port on your own computer.
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Source:
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Nmap Basic Commands
nmap -h |
nmap's help menu |
man nmap |
nmap's manual |
nmap -Ss |
Syn Scan |
-sU |
UDP Scan |
-p 80 |
Scans only port 80 (used as an instance obviously) |
-sV |
Detects scanned Service Version |
-v // -vv |
Increses verbosity level (greater output - recommended) |
-oA |
Saves the nmap results in three major formats |
-oN |
Save the output in a normal format |
-oG |
Saves the output on a Grepable format |
-a |
Agressive Mode (very Loud - activates service detection, operating system detection, a traceroute and common script scanning) |
-t5 |
Increses timing template (0-5, louder and faster but with more errors) |
-O |
Detects OS |
-p 80-100 |
Defines port range (instance: 80 to 100) |
-p- |
Scans all ports |
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