```bash
nmap -p- -T5 <ip>
nmap -p 22,25,80 -A <ip>
```

``` bash
nmap -p- --min-rate 5000 <ip>
```

```bash
nmap -sn 192.168.102.0/24 -T4 -oN discovery.nmap
nmap -iL output.txt -T4 -sV -sC -p- -Pn -n --open -A -oN version.nmap
```

```bash
nmap -sU -p- --min-rate 5000 <ip>
```

- Conduct a full UDP port scan (may be all `open|filtered`) because open ports rarely respond to empty probes. No response --> open port or dropped by firewall.
    

```bash
nmap -A -sV -sC -sU 10.11.1.111 --script=*enum --top-ports 20
```

- When version scanning is enabled with -sV (or -A), it will send UDP probes to every `open|filtered` port. If any of the probes elicit a response from an `open|filtered`port, the state is changed to open.
    

```bash
nmap script=vuln 192.168.193.211
```

- Nmap scripts location `/usr/share/nmap/scripts/`

```bash
proxychains nmap --top-ports=20 -sT -Pn 10.5.5.20
```

- SOCKS proxies require a TCP connection to be made and thus a half-open or SYN scan cannot be used with ProxyChains
    

## Scans thru Socks proxy

```bash
nmap --proxies socks4://proxy-ip:8080 target-ip
```

## SYN-Scan of a Filtered Port

```bash
sudo nmap 10.129.2.28 -p50000 -sS -Pn -n --disable-arp-ping --packet-trace
```

## SYN-Scan From DNS Port

```bash
sudo nmap 10.129.2.28 -p50000 -sS -Pn -n --disable-arp-ping --packet-trace --source-port 53
```

See also: [[Tools/autorecon]] for automated port discovery, [[Linux/portscanning]] for quick Bash loops, and [[Windows/Active Directory for OSCP/Initial Access/Scan Network]] when nmap has to run through proxychains in AD-heavy networks.