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Updating the NMAP cheat sheet
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@ -27,6 +27,16 @@ If no port range is specified, Nmap scans the 1,000 most popular ports.
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- Open/Filtered: This indicates that the port was filtered or open but Nmap couldn’t establish the state.
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- Closed/Filtered: This indicates that the port was filtered or closed but Nmap couldn’t establish the state.
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## Scan Types
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-`-sn`: Probe only (host discovery, not port scan)
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-`-sS`: SYN Scan
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-`-sT`: TCP Connect Scan
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-`-sU`: UDP Scan
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-`-sV`: Version Scan
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-`-O`: Used for OS Detection/fingerprinting
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-`--scanflags`: Sets custom list of TCP using `URG ACK PSH RST SYN FIN` in any order
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## Probing Options
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- `-Pn`: Don't probe (assume all hosts are up)
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@ -36,6 +46,25 @@ If no port range is specified, Nmap scans the 1,000 most popular ports.
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- `-PP`: Using ICMP Timestamp Request
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- `-PM`: Using ICMP Netmask Request
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## Timing Options
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`-T0` (Paranoid): Very slow, used for IDS evasion
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`-T1` (Sneaky): Quite slow, used for IDS evasion
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`-T2` (Polite): Slows down to consume less bandwidth, runs ~10 times slower than default
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`-T3` (Normal): Default, a dynamic timing model based on target responsiveness
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`-T4` (Aggressive): Assumes a fast and reliable network and may overwhelm targets
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`-T5` (Insane): Very aggressive; will likely overwhelm targets or miss open ports
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## Fine-Grained Timing Options
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`--min-hostgroup/max-hostgroup <size> `: Parallel host scan group sizes
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`--min-parallelism/max-parallelism <numprobes>`: Probes parallelization
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`--min-rtt-timeout/max-rtttimeout/initial-rtt-timeout <time>`: Specifies probe round trip time.
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`--max-retries <tries>`: Caps number of port scan probe retransmissions.
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`--host-timeout <time>`: Gives up on target after this long
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`--scan-delay/--max-scan-delay <time>`: Adjusts delay between probes
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`--min-rate <number>`: Send packets no slower than `<number>` per second
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`--max-rate <number>`: Send packets no faster than `<number>` per second
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## Nmap Scripting Engine
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The full list of Nmap Scripting Engine scripts: http://nmap.org/nsedoc/
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@ -91,4 +120,16 @@ The most common Nmap scripting engine categories:
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- version: Measure the version of software or protocols on the target hosts.
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- vul: Measure whether target systems have a known vulnerability.
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## Output Options
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`-oN`: Standard Nmap output
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`-oG`: Greppable format
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`-oX`: XML format
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`-oA`: <basename> Generate Nmap, Greppable, and XML output files using basename for files
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## Additional Options
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`-n`: Disables reverse IP address lookups
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`-6`: Uses IPv6 only
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`-A`: Uses several features, including OS Detection, Version Detection, Script Scanning (default), and traceroute
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`--reason`: Displays the reason Nmap thinks that the port is open, closed, or filtered
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