Configuration Tips

As long as you have not been in a bunker for the past 9 years, then you have probably heard of “Bitcoin” and probably other forms of cryptocurrency like Ethereum (ETH), Litecoin (LTC), and Bitcoin Cash (BCH). But what is bitcoin and why is there so much noise about it? …

From my experience as a Network Security Engineer, I have worked on many Cisco projects involving AAA on the routers but not so many that involve AAA on the Cisco ASA. I find that a bit weird considering that the Cisco ASA is the real security device. I wonder if …

LLDP (Link Layer Discovery Protocol) is an IEEE (Institute of Electrical and Electronics Engineers) standard protocol (IEEE 802.1AB) that defines messages, encapsulated in Ethernet frames for the purpose of giving devices a means of announcing basic device information to other devices on the LAN (Local Area Network) through periodic retransmissions …

The Networking world is being bombarded by so many “new” technologies that it is difficult to keep up with them all, from Software Defined Networking (SDN) to Network Function Virtualization (NFV) and now Software-Defined Wide Area Network (SD-WAN). At the center of all these technologies is a focus on software …

In this article, we will be discussing Open Networking and try to dissect what the “open” in Open Networking really means. We will also be looking at different real-life products and solutions that fit the Open Networking model. Finally, we will look at a practical lab example of Open Networking. …

The Internet was initially designed to support end-to-end connectivity i.e. every device/host on the Internet should be able to “talk” to every other device directly like in a peer to peer model. As such, when the Internet was conceived and IPv4 was chosen (and IPv6 was not even an idea!) …

Hot Standby Routing Protocol or HSRP, is a Cisco proprietary protocol that allows two or more routers to work together to represent a single IP address for a particular network. HSRP, as well as Virtual Route Redundancy Protocol (VRRP) are considered high-availability network services that allow for almost immediate fail …

Remotely triggered black hole routing is a technique that can be used to protect from DDoS attacks. It has the ability to drop undesirable traffic before it enters the protected network. This article explains how it works and how it can be configured to protect your network. What is a DDoS …

It is a fact, corporations are looking towards Software Defined Networks (SDN), but something keeps troubling their peace of mind…their network security. Software defined network attacks are unfortunately a reality nowadays, so let’s see how they try to breach into the network. Many things have been said about the ability …

In this article, we will be looking at Network Address Translation (NAT) on the Cisco ASA. I will assume the readers of this article know what NAT and the Cisco ASA are, so I will just give an overview. In the simplest form, the Adaptive Security Appliance (ASA) is Cisco’s …