Today I wanted to share my CCIE Security notes on ICMP redirect messages. ICMP Redirection is used to notify hosts that a better route is available for packets destined for a specific destination. This feature is available and enabled by default on all Cisco IOS releases but it is worth mentioning that there may be [...]
In this article, I will demonstrate how to configure the ASAv so that you use a virtual serial port. This article assumes that you have installed the virtual Cisco Adaptive Security Appliance using VMware workstation or it's equivalent and that you can only access the ASAv CLI via the VMware client. By default, the virtual serial [...]
In this article, I will describe how to enable authentication and authorization for Firepower eXtensible Operating System (FXOS) devices. The use case presented in this document illustrates how Cisco Identity Services Engine (ISE) can be utilised with attribute-value pairs (AV-Pairs) to authenticate and authorize users accessing the Firepower Chassis Manager (FCM) or FXOS platforms via [...]
If you're a firewall engineer or work closely with the Cisco ASA then no doubt you will often find yourself troubleshooting and verifying reachability of packets on a network. One great feature that the ASA has to test reachability is the 'packet-tracer' command which when given an input will provide you with a very handy [...]
In this video demonstration, I show you how to reset your administrator password after it has expired.
This article accompanies the demonstration video I have created below. TCP interception is a CCIE Security version 5 blueprint topic. What is TCP interception? TCP interception is a method used to protect against TCP SYN-flooding attacks. This is achieved by intercepting TCP connection requests (SYN packets) and verifying the connection before passing the original TCP SYN packet [...]
In this article, I would like to demonstrate how to configure Cisco Smart Licensing on the virtual Cisco Adaptive Security Appliance (ASAv). This post assumes that readers already have access to there own Smart Account and would like to know the process of applying licenses. Step 1: Generate ID Token Sign into your Cisco Software [...]