Cisco PIX Firewall Router

Overview of Cisco PIX Firewalls


Firewalls are networking devices that control access to your organization's network assets. Firewalls are positioned at the entrance points into your network. If your network has multiple entrance points, you must position a firewall at each point to provide effective network access control.
Firewalls are often placed in between the internal network and an external network such as the Internet. With a firewall between your network and the Internet, all traffic coming from the Internet must pass through the firewall before entering your network.
Firewalls can also be used to control access to a specific part of your network. For example, you can position firewalls at all the entry points into a research and development network to prevent unauthorized access to proprietary information.
The most basic function of a firewall is to monitor and filter traffic. Firewalls can be simple or elaborate, depending on your network requirements. Simple firewalls are usually easier to configure and manage. However, you might require the flexibility of a more elaborate firewall.
Cisco security certifications focus on the growing need for knowledgeable network professionals who can implement complete security solutions. Cisco Firewall Specialists focus on securing network access using Cisco IOS Software and Cisco PIX Firewall Technologies.

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You can use the PIX Firewall feature set to configure your Cisco PIX router as:

An Internet firewall or part of an Internet firewall

A firewall between groups in your internal network

A firewall providing secure connections to or from branch offices

A firewall between your company's network and your company's partners' networks


The Cisco IOS Firewall feature set provides the following benefits:

Protects internal networks from intrusion

Monitors traffic through network perimeters

Enables network commerce via the World Wide Web


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