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OSPF Configuration Overview Part 1

In this article I will write about the OSPF routing protocol and give a quick overview of the inner workings. OSPF is a link state routing protocol as opposed to a distance vector protocol like RIP. You might be wondering what type of a protocol EIGRP falls under? EIGRP is categorized as an advanced distance vector protocol as it uses the DUAL algorithm rather than the Bellman Ford algorithm used by RIP. OSPF is based on Dijkstra’s...

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EIGRP Configuration Overview Part 2

This is a continuation to part 1 of the EIGRP Configuration overview. In this article I will go over some advanced EIGRP configuration options. One of the first things that we want to do after configuring EIGRP is to limit to which interfaces we create neighbor relationships on. On interfaces where only end-user stations will be plugged into we can set the interface mode to passive. Making the interface mode passive means that we...

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EIGRP Configuration Overview Part 1

In this article I will write about the EIGRP routing protocol and give a quick overview of the inner workings. EIGRP is a Cisco proprietary protocol and offers a great balance between performance and ease of configuration. The network that we will be implementing is the following: We will start off by assigning IP addresses to the interfaces connecting R1 and R2. R1(config)#interface fastEthernet 0/0 R1(config-if)#ip address 10.12.0.1...

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pfSense: Installation and Configuration Part 2

This is a follow-up article to the part 1 pfSense article that I wrote a while back. In this article I will focus on packages that can be installed on pfSense as well as configuring snort which is an IPS/IDS that integrates well with the pfSense firewall. In order to see which packages are available for installation you want to start by heading over to System–>Packages On the package manager window head over to the “Available...

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RIP Configuration Overview

In this article I will write about the RIP routing protocol and give a quick overview of the inner workings. Even though RIP does not have as much usage in the enterprise environment as other routing protocols, it is still useful to know how it works. We will be implementing the following basic topology for our lab: Let’s start by assigning IP addresses to our interfaces. R1(config)#interface fastEthernet 0/0 R1(config-if)#ip address...

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pfSense: Installation and Configuration Part 1

These past few months I have been looking at firewalls and intrusion prevention systems that are open source and can run on commodity hardware. I have been wanting to add an extra layer of protection to my home network and that led me to write this article. The most popular IPS by far is Snort since it is open source and free. While looking at open source firewalls, I came across pfSense which supports Snort and it was the best choice for...

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