Welcome to my corner on the web. My name is Harris Andrea and I’m a security and network engineer working in an Internet Service Provider. My current professional position is Systems Engineer working with cloud and virtualization technologies.
I’ve graduated from the University of Kansas in 1999 with a Bsc and Msc degrees in Electrical Engineering and Computer Science and since then I’ve been working in the IT field in different areas and positions.
The main purpose of this blog is to provide technical tutorials, configuration examples and guides about IP networks with focus on Cisco products and technologies.
I believe that the resources offered here can be useful for a range of professionals (beginners to experts) working with Cisco products, from routing and switching to security and IP Telephony.
I have been working with Cisco products for around two decades. To support my knowledge and build a strong professional background, I have also studied and earned several Cisco Certifications such as CCNA, CCNP, and CCSP. I decided to build this blog in order to record down and share some of my knowledge and experience acquired over the years in the networking field.
As a network and security engineer of IP networks, I came across various technologies implemented in the networks I work. Some examples include different routing protocols (OSPF, BGP, ISIS), MPLS technologies (Layer 2 and Layer 3 VPNs), security technologies (ASA Firewalls, IPSEC VPNs, encryption, IPS systems), Voice over IP, Quality of service, wireless technologies etc.
I’m also the author of two Cisco books which have been embraced by thousands of Cisco professionals:
My Books on Amazon:
Cisco ASA Firewall Fundamentals
I enjoyed setting up this blog, and I will do my best to keep it updated and informative for my visitors. If you have any questions or comments, please use the Contacts link to drop me an email.
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Other Expert Authors
Lazaros Agapidis is a Telecommunications and Networking Specialist with over twenty years of experience.
He works primarily with IP networks, VoIP, Wi-Fi, and 5G, has extensive experience in training professionals for Cisco certifications, and his expertise extends into telecommunications services and infrastructure from both an enterprise and a service provider perspective.
In addition to his numerous vendor certifications, Lazaros has a solid online presence as an expert in his field, having worked in both public and private sectors within North America and in Europe.
He has enjoyed sharing his practical experiences in writing as well as through engaging online training.
Follow Lazaros Agapidis at LinkedIn