How Information Travels On The Internet - Watchguard Firebox SOHO 6 User Manual

Chapter 1: Introduction
The SOHO 6 controls all traffic between the external network (the
Internet) and the trusted network (your computers). All suspicious
traffic is stopped. The rules and policies that identify the
suspicious traffic are shown in "Configuring Incoming and
Outgoing Services" on page 62.

How Information Travels on the Internet

The data that is sent through the Internet is divided into packets.
To make sure that the packets are received at the destination,
information is added to the packets. The protocols for sending and
receiving these packets are called TCP and IP. TCP disassembles
4 WatchGuard Firebox SOHO 6