June 22, 2018

Category: Security

KT Labs EP1 :: Switch Security and Device Access

Thank you to all those that attended my first live knowledge transfer session today. I plan on doing these on a regular basis, from videos that help beginners to more advanced videos that focus on Cisco certifications all the way up to CCIE level. You can view the first session below, along with the presentation […]

CCIE Security v5 :: ICMP Redirects

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 […]

Cisco :: Configure ASAv To Use Virtual Serial Ports

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 […]

Cisco :: FXOS Authentication Using TACACS

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 […]

Cisco ASA :: Verifying ICMP Reachability on the ASA

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 […]

How to configure a Rotating, long term packet capture using Wireshark.

Introduction Wireshark is an awesome tool for troubleshooting network traffic. Although the Wireshark GUI is not designed for long term packet captures and left running would simply fill the hard drive of the server/pc running the program. Within Wireshark there is a tiny built in Windows command line tool called ‘dumpcap’ which at less than […]

Cisco ASA :: Object NAT

In this video demonstration, we take a look at Object NAT and how it can be used to map hosts statically.    

Cisco ISE :: Reset Expired Admin Password

In this video demonstration, I show you how to reset your administrator password after it has expired.    

Cisco ISE :: Reset Administrator Password Due to Lockout

In this video demonstration, I’ll show you how to reset your administrator password on a standalone Cisco Identity Services Engine. This method is used if you have forgotten your administrator password. Note: A reboot is required in order to complete the following procedure.   
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