Packet Sender Portable

Packet Sender Portable is a free and open-source software application designed to send and receive network packets over TCP, UDP and SSL connections. It supports both ASCII and HEX data and it's also available for Mac and Linux.

This type of software comes in handy for testing security vulnerabilities on your computers when it comes to the network connectivity and firewalls by establishing a link between two packet senders. It can also be used for API evaluation as well as malware and security research.

The utility is wrapped in a user-friendly interface made from one window that shows all options put at your disposal. You can specify the packet name, ASCII or HEX representation, IPv4, IPv6 or DNS Lookup address, port number, resend delay, and connection type (TCP, UDP, SSL).

Network traffic is displayed on the bottom part of the window, where you can find out the time, sender and receiver IP, receiving port, method, error type (if any), ASCII and HEX representation of each packet.

Moreover, you can enable persistent TCP and SSL in order to stay connected while sending your encrypted information, export the packets to file and import them later to pick up where you left off, as well as use a built-in IPv4 subnet calculator.

When it comes to program settings, you can change the display order of the saved packets via drag and drop, prevent the tool from restoring the previous session, disable the UDP or TCP server, send a basic response with macro support, toggle between IPv4 and IPv6 mode, as well as ask the utility to ignore SSL errors, among other options.

It worked smoothly on Windows 10 in our tests. Thanks to the fact that it's portable, Packet Sender can be stored on a USB flash drive and directly launched on any computer to send and receive network packets with minimum effort.