🔌 nu_plugin_port_extension

A Nushell plugin for inspecting open ports and scanning network services. It introduces two subcommands:

• port list: Lists all open network connections, similar to netstat.
• port scan: Scans a target IP and port to determine if it is open.

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✨ Features

port list – List Active Connections

The port list command retrieves all open connections on the network interface. It supports filtering by protocol, IP version, and listening state.

📌 Usage

port list {flags}

⚙️ Available Flags

• -h, --help → Show help message.
• -6, --disable-ipv4 → Exclude IPv4 connections (only show IPv6).
• -4, --disable-ipv6 → Exclude IPv6 connections (only show IPv4).
• -t, --disable-udp → Exclude UDP connections (only show TCP).
• -u, --disable-tcp → Exclude TCP connections (only show UDP).
• -l, --listeners → Show only listening connections (state == "LISTEN").
• -p, --process-info → Include process details (name, command, binary path).

🔍 Example: Show Active Processes

port list -p | take 1

📊 Example Output

pid	type	ip_version	local_address	local_port	remote_address	remote_port	state	process_name	cmd	exe_path
11536	tcp	4	127.0.0.1	1093	127.0.0.1	1108	ESTABLISHED	steam.exe	[C:\Program Files (x86)\Steam\steam.exe, -silent]	C:\Program Files (x86)\Steam\steam.exe

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port scan – Scan Open Ports

The port scan command checks if a specific port is open on a target IP, similar to nc -vz {ip} {port}.

⚠️ Note: Only TCP scanning is supported at the moment.

📌 Usage

port scan {flags} <target IP> <port>

⚙️ Available Flags

• -h, --help → Show help message.
• -t, --timeout <duration> → Set timeout before giving up (default: 60s).
• -s, --send <string> → Send data to the target upon connection.
• -b, --receive-byte-count <int> → Number of bytes to receive before confirming the connection is open.

🎯 Parameters

• target IP (string) – The IP address to scan.
• port (integer) – The port number to check.

🔍 Example: Check if Google's Public DNS (8.8.8.8) has Port 53 Open

port scan 8.8.8.8 53 -t 1sec

📊 Example Output

╭─────────┬─────────╮  
│ address │ 8.8.8.8 │  
│ port    │ 53      │  
│ is_open │ true    │  
│ elapsed │ 40ms    │  
╰─────────┴─────────╯  

🔄 Example: Scan a Range of Ports on 127.0.0.1 and Filter Open Ports

7880..8000 | each { |it| port scan 127.0.0.1 $it -t 1ms } | where result == Open

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🔧 Installation

🚀 Recommended: Using nupm

This method automatically handles dependencies and features.

git clone https://github.com/FMotalleb/nu_plugin_port_extension.git  
nupm install --path nu_plugin_port_extension -f  

🛠️ Manual Compilation

git clone https://github.com/FMotalleb/nu_plugin_port_extension.git  
cd nu_plugin_port_extension  
cargo build -r  
plugin add target/release/nu_plugin_port_extension  

📦 Install via Cargo (using git)

cargo install --git https://github.com/FMotalleb/nu_plugin_port_extension.git  
plugin add ~/.cargo/bin/nu_plugin_port_extension  

📦 Install via Cargo (crates.io) Not Recommended

Since I live in Iran and crates.io often restricts package updates, the version there might be outdated.

cargo install nu_plugin_port_extension  
plugin add ~/.cargo/bin/nu_plugin_port_extension