NSMAM (Network Security Manager All-in-One Monitor)

A lightweight, premium Text User Interface (TUI) firewall manager written in Rust. It provides a unified, interactive dashboard to monitor and manipulate system rules for UFW, nftables, and iptables in Linux environments (Debian, Ubuntu, CentOS, RHEL).

Features

• Unified Firewall Control: Abstracted operations supporting UFW, nftables, and iptables.
• Dynamic Service Detection: Scans active listening sockets directly via /proc/net (IPv4/v6, TCP/UDP) to easily select target ports/protocols instead of typing them manually.
• SSH Lockout Protection: Automatically tracks session rule changes and reverts them instantly in reverse order if connection is lost (interceptor for SIGHUP signal).
• Security Audit Logs: Structured logging of all firewall operations to /var/log/nsmam.log tracking timestamps, backend used, and the real executing user (SUDO_USER / DOAS_USER).
• Multiplexer Detection: Warns the administrator if running inside a terminal multiplexer (tmux or screen) where connection drops may bypass the SIGHUP signal.

Requirements

• Linux OS (Debian, Ubuntu, RHEL, CentOS)
• Rust Toolchain (cargo & rustc version 1.80+) only if compiling from source.

Installation

You can install NSMAM using either the precompiled standalone binary (no Rust/Cargo toolchain required) or by compiling from source.

Option 1: Precompiled Standalone Binary (Recommended)

1. Download the latest nsmam-x86_64-linux static binary from the GitHub Releases.
2. Install it to your system path:

   sudo cp nsmam-x86_64-linux /usr/local/bin/nsmam
   sudo chmod +x /usr/local/bin/nsmam

Option 2: Compile from Source

Run the automated installer script:

sudo ./install.sh

The script will auto-detect your active firewall backend (or prompt you to force one), configure log file privileges (640 owned by root:adm), compile the release binary, and install it to /usr/local/bin/nsmam.

Usage

Launch the TUI interface with root privileges:

sudo nsmam

Key Bindings

Key	Action
a	Open Add Rule form
d	Delete selected rule
t	Toggle firewall state (Enable/Disable)
f	Flush all rules
r	Refresh rules and services
↑ / ↓	Select rules / navigate service list
Tab / BackTab	Navigate form inputs
Space / Enter	Choose selector values / Submit forms
Esc / q	Cancel modals / Quit TUI

License

MIT License.