Amer Networks E5Web GUI - Manual (Page 239)

3.11. Internet Access Setup
Overview
One of the first things an administrator often wants to do after starting cOS Core for the first time
is to set up access to the public Internet. This section is a quick start guide to doing this and
refers to many other sections in Chapter 3, Fundamentals as well as Chapter 4, Routing which
follows.
Getting Started Guides
This section is designed to be a broad overview of setting up Internet access for all cOS Core
platforms. Clavister provides specific Getting Started guides for different Clavister hardware
models as well as other getting started guides for setup in a virtual machine environment using
VMware (the Virtual Security Gateway Series).
These getting started guides contain a comprehensive section on Internet setup which is specific
to each environment and the administrator is advised to refer to them for more detailed
information. The guides also explain how to set up Internet PPPoE and PPTP access.
The Setup Wizard
When cOS Core is accessed for the first time through the Web Interface using a web browser, the
administrator is not taken directly to the interface. Instead, a Setup Wizard runs which takes the
administrator through a number of dialogs to set up the basic cOS Core configuration. A portion
of the wizard deals with the setup of Internet access.
By dismissing the wizard, the administrator can go straight to the Web Interface and perform
setup manually, step by step. The sections below assume that setup is being performed
manually but they are also useful in understanding the setup steps that the wizard automates.
IP Address Options
Initially, access to the Internet will not be possible via a Clavister Security Gateway. To achieve
this, access must first be arranged with an Internet Service Provider (ISP). The ISP will probably
offer two options for access:
• Using Static IP Addresses
Access can be setup using static IP addresses. The ISP provides the required addresses (for
example, in an email) and these are manually input into the cOS Core configuration.
• Using DHCP
cOS Core can act as a DHCP client and use the DHCP protocol to automatically retrieve all the
IP addresses required across the connection with the ISP. No addresses need to be entered
manually.
3.11.1. Static Address Setup
For the static IP address option, the ISP should provide:
• A public IPv4 address for the Clavister Security Gateway. This is assigned to the interface that
connects to the ISP.
Chapter 3: Fundamentals
239