April 26, 2018

Category: Security

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.   

CCIE Security v5 :: TCP Interception

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 […]

Cisco :: Configuring Smart License Software

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 […]

CCIE Security v5 :: ASA Packet Processing Post 8.3 Code

In this article, I will share my notes on the ASA packet process for version 8.3+. Domain 1.0 off the CCIE Security version blueprint focuses on perimeter security and intrusion prevention, both of which include the ASA. In order to understand the ASA and how it works, it is important to understand how packets are processed […]

Cisco :: ISE 2.3 Device Administration using TACACS+

In this article, I will cover network device administration using TACACS+ on Cisco’s Identity Services Engine. Accompanied with a video demonstration, I will also list the TACACS+ configuration required for Cisco’s ASAv. Configure the Network Device/s In the video demonstration, I have used the ASAv as the network device I would like ISE to administer. […]
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