How to protect your mikrotik router from DDoS Attacks – Basics

Distributed Denial of Service Attacks or DDoS is quite popular these days and it’s not hard to guess the the name of the originating country – China/Hong Kong tops the list of the attackers. Huh! It has been a long time I’m working with mikrotik devices. So, it is not anything new for me. Guess […]
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Gaining access to an unconfigured Cisco 3750 Switch without Console, Telnet and SSH Access

Huh!! What happens when you need to configure a Cisco 3750 immediately for production network but unfortunately you don’t have console, telnet, or SSH access? I know it’s damn scary and if it happens at 02:00 hours then you have no one to help you. Problem: Recently during an installation, I faced the exact same […]
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Monitoring & Securing your Cisco devices with Syslog & TACACS + Server – Basics

While deploying logging and authentication solution for a company, I came across a very interesting technology called TACACS + and Syslog. Though I have worked with Syslog previously but TACACS was a new protocol for me. Now, why suddenly someone would deploy these two protocols and also at the same time? Yes… you guessed it […]
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How to install Radius Manager 4 in CentOS 7 [with Video]

A little Introduction… Again I’m am writing about radius manager after a long time. But this time something more updated that is installation of Radius Manager in CentOS 7 which is currently the latest Cent OS version available. Here I will do the installation in a 64 bit version of CentOS 7 downloaded recently from […]
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How to automatically map your dynamic WAN IP to your Mikrotik Router?

So, you have a broadband connection and your IP is not static. That’s a big problem in case you need to manage it remotely from anywhere in the world. So here’s a simple process to solve this issue and never remember your IP again. So to Automatically map dynamic WAN IP to your Mikrotik Router follow […]
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Download Juniper vSRX – Firefly & Juniper E-Books

In this post I’m going to share with you the latest vSRX ova file while you can run in your VMWare Workstation as well as in ESX Server (if you have one). I am also going to share the following Juniper e-books which will be of great help 1. Juniper Networks Warrior 2. Juniper SRX […]
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How to install vCenter Server 5.5 in Windows 7 OS

Recently I faced a lot of trouble installing vCenter Server 5.5 in Windows 7 OS. According to VM Ware documentation, we can’t install it on consumer grade OS like Windows 7 or Windows 8 as it only supports Windows Server based OS. But it is no possible for many of home users studying for VCP Certification to […]
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How to use Cisco ASA 8.4 with GNS3

This tutorial will help you setup your CCNA, CCNP or CCIE Security Lab with Cisco ASA 8.4 which is currently supported by the latest version of GNS3. Download the source files here. Extract them and place them in the GNS3 images directory. For example : C:\Users\<user name>\GNS3\images\QEMU\ Go to Edit -> Preference -> QEMU -> QEMU […]
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How to work with Cisco IOS in GNS3

As in my previous post  I have shared some working Cisco IOS for GNS3, now I am going to show you how to use those with the latest version of GNS3 which can be downloaded from GNS3’s official website. The IOS must be compatible with GNS3 and can be added to it by following the simple […]
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