upf 0.1.1

Uncomplicated Port Forwarder (UPF)

Uncomplicated Port Forwarder (UPF)

Uncomplicated Port Forwarder (UPF) is a simple command-line tool to manage port forwarding rules using iptables. It supports both TCP and UDP protocols, making it easy to set up port forwarding for specific ports or ranges of ports.

Installation

pip install upf

Run the script with sudo for administrative privileges (required to modify iptables).

Usage

Add a Single Port Forwarding Rule

Add a port forwarding rule from a host to a remote IP and port.

TCP (default)

sudo upf add <remote-ip> <host-port>:<remote-port>

Example:

sudo upf add 192.168.0.2 2200:22

UDP

sudo upf add <remote-ip> <host-port>:<remote-port> --udp

Example:

sudo upf add 192.168.0.2 2200:22 --udp

Add a Range of Port Forwarding Rules

Add a range of port forwarding rules for a subnet starting from a specified port.

TCP (default)

sudo upf add-range <gateway>/<subnet> <starting-port>

Example:

sudo upf add-range 192.168.0.1/24 2200

UDP

sudo upf add-range <gateway>/<subnet> <starting-port> --udp

Example:

sudo upf add-range 192.168.0.1/24 2200 --udp

List All Managed Port Forwarding Rules

List all the port forwarding rules that have been added using UPF.

sudo upf list

Delete a Specific Port Forwarding Rule

Delete a specific port forwarding rule by host port.

TCP (default)

sudo upf delete <host-port>

Example:

sudo upf delete 2200

UDP

sudo upf delete <host-port> --udp

Example:

sudo upf delete 2200 --udp

Notes

• Persistence: By default, changes made using iptables are not persistent after reboot. To make them persistent, you can save the rules using iptables-save and restore them with iptables-restore.