About This Guide

Updated: October 26, 2022

This guide introduces you to the QNX Neutrino Core Networking stack and its manager, io-pkt.

Note: The High-Performance Networking Stack (io-sock) is available as an alternative to io-pkt. Systems can use io-pkt or io-sock, but not both. For more information, see the High-Performance Networking Stack User's Guide.

The following table may help you find information quickly in this guide:

For information on: Go to:
io-pkt and its architecture Overview
Examining and modifying packets, and creating a firewall Packet Filtering
Setting up secure connections IP Security and Hardware Encryption
802.11 a/b/g (Wi-Fi) Wi-Fi Configuration Using WPA and WEP
io-pkt and Qnet Transparent Distributed Processing
Support for different types of network drivers Network Drivers
Related utilities, etc. Utilities, Managers, and Configuration Files
How to write your own network driver Writing Network Drivers for io-pkt
Sample code for the above A Hardware-Independent Sample Driver: sam.c
More information about writing a network driver Additional Information
Terms used in this document Glossary