certification

F5-CA – Application Delivery Fundamentals – Application Delivery Platforms

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Objective 5.01 Describe the purpose, advantages, use cases, and challenges associated with hardware based application delivery platforms and virtual machines Explain when a hardware based application deliver platform solution is appropriate Hardware based platforms are generally more powerful, more stable, more scaleable, and may have specialized hardware capable of accelerating common tasks.The major drawback to […]

certification

F5-CA – Application Delivery Fundamentals – Security

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Objective 4.01 Compare and contrast positive and negative security models  Describe the concept of a positive security model A “positive” security model (also known as “whitelist”) is one that defines what is allowed, and rejects everything else.The positive security model can be applied to a number of different application security areas. For example, when performing […]

certification

F5-CA – Application Delivery Fundamentals – Load Balancing Essentials

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Objective 3.01: Discuss the purpose of, use cases for, and key considerations related to load balancing Explain the purpose of distribution of load across multiple servers load balancing distributes workloads across multiple computing resources, such as computers, a computer cluster, network links, central processing units or disk drives. Load balancing aims to optimize resource use, […]

certification

F5-CA – Application Delivery Fundamentals – OSI

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While starting to look around for various F5 topics for study, I was directed to http://veritablenetworks.blogspot.com/2012/11/f5-application-delivery-fundamentals.html. This page has a full listing of research topics for the F5 101 exam, but is a little out of date. I decided to use this as the starting point for my studies, but needed to update several aspects of […]

certification

Preparing for my F5 Bip-IP certification

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We are implementing a setup of F5 Big-IPs, and I decided its time to get back on the certification tracks. As such, I am going to start with the F5 Certified Bip-IP Administrator certification. This certification requires 2 exams: Application Delivery Fundamentals, and TMOS Administration. I have been told that the first exam is little […]

Networking

Site-to-Site VPN using Vyatta

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I was testing a new backup solution that does replication across the wire to a secondary site. I didnt want to impact production, so I used VMware to clone the system I was backing up, and used an isolated network for my backup testing.All was fine until I needed to setup a target at my […]

Networking

Monitoring wireless networks

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I just rebuilt my laptop and was in the process of reinstalling all my normal tools (7zip, Chrome, wireshark, etc…) I suddenly remembered that I had a great wireless monitoring tool that allowed me to see what networks were nearby, what channel they were on, and how strong their signals were over time, but I […]

Networking

Vyatta virtual router

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Often times when setting up a test lab, I will use a Linux system as a router/firewall. While this works, it requires somewhat intimate knowledge of Linux setup and networking – something not everyone is going to have. I found the Vyatta platform is a nice hybrid between a Linux server and a network appliance. […]

Networking

Use SNMP to find a device on Cisco

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In my recent search for a rouge MAC address, I had dozens of Cisco switches to look through in order to find the port the address came from. I vaguely remembered hearing about someone using SNMP to track a MAC down to a specific port on a switch, and decided to take a look. I […]