EDIT: My Book “Cisco ASA Firewall Fundamentals-3rd Edition” is now available on Amazon as Paperback physical book. MORE INFORMATION HERE Some time ago a visitor of my website asked me to help him on a special Cisco ASA VPN configuration and thought about sharing it here to help other people as well. The specific network […]
Cisco ASA Firewall Fundamentals Book now available on Amazon
I’m excited to announce today that my ASA book “Cisco ASA Firewall Fundamentals-3rd Edition” is now available on Amazon as a physical Paperback book. I have had numerous requests from people to publish my book in printed format as well, so here we go. The book is available on almost all Amazon websites and you […]
Six DoS Vulnerabilities in Cisco IOS Software – Patch your devices ASAP
On March 26, 2014 Cisco has announced six serious security vulnerabilities (five vulnerabilities in Cisco IOS software and one in Cisco 7600 Series Route Switch Processor 720 with 10 Gigabit Ethernet Uplinks). If the vulnerabilities are exploited they can result in Denial of Service condition for the devices. All six vulnerabilities have a CVSS base […]
What is Currently the best Cisco Training for Certification Exams?
Read until the end of this article to see how you can get a complete CCNA Training for around $20 and a complete CCNP Training for around $50. Cisco Certifications have always been among the most valuable professional qualifications to obtain since they offer huge opportunities in career advancement. Earning a certification like CCNA, CCNP, […]
Cisco ASA Firewall Fundamentals ebook by Harris Andrea-New Edition
A few days ago I have published the updated 3rd edition of “Cisco ASA Firewall Fundamentals” tutorial ebook which covers the latest ASA version 9.x and also is applicable for both the 5500 and 5500-X series of devices. What I have done with the 3rd Edition (in addition to adding a lot of new content) […]
Cisco ASA Firewall Fundamentals 3rd Edition
Today I have officially launched my new ebook “Cisco ASA Firewall Fundamentals – 3rd Edition” which is probably the most updated and practical Cisco ASA tutorial out there. It covers the newest ASA version 9.x (plus older versions as well) and all content in the book is applicable for both ASA 5500 and 5500-X series. […]
Cisco ASA5510 Vs ASA5512-X or 5515-X
The Cisco ASA product line for small and branch offices includes 4 ASA models: ASA5505 (either Basic License or Security Plus License) ASA5510 (either Basic License or Security Plus License) ASA5512-X (either Basic License or Security Plus License) ASA5515-X In this article I will describe the main differences between the ASA5510 and the newest generation […]
Comparison of Cisco ASA5500 Vs ASA5500-X
Although Cisco created a new series of ASA appliances (5500-X series), there are hundreds of thousands of older Cisco ASA 5500 models installed and working in networks all over the world. If you are one of those professionals who are considering to upgrade your older ASA5500 appliances with the new “X” models, I have prepared […]
Cisco ASA CX Security Module on new 5500-X Firewalls
The new series of Cisco ASA devices (ASA 5500-X models which include 5512-X, 5515-X, 5525-X, 5545-X, 5555-X and 5585-X) have the capabilities to support Next Generation Firewall Security Services. They support these security services as cloud-based services (such as Cloud Web Security and Web Security Essentials) or as software based modules which do not need […]
Site-to-Site IPSEC VPN Between Cisco ASA and pfSense
IPSEC is a standardized protocol (IETF standard) which means that it is supported by many different vendors. Therefore if you want to create a VPN between different vendor devices, then IPSEC VPN is the way to go. In this article we will see a site-to-site VPN using the IPSEC protocol between a Cisco ASA and […]
Site-to-Site IPSEC VPN Between Two Cisco ASA – one with Dynamic IP
Cisco ASA 5500 Series appliances deliver IPsec and SSL VPN, firewall, and several other networking services on a single platform. Cisco ASA 5520, a member of the Cisco ASA 5500 Series, is shown in Figure 1 below. Figure 1 Cisco Adaptive Security Appliance (ASA) In this article, we will focus on site-to-site IPsec implementation between […]
Cisco ASA 5505 DMZ with Private VLAN Configuration
The ASA 5505 is the only model that has an 8-port switch embedded in the device. All interfaces of the ASA5505 are Layer2 switch ports and thus they support some features that you can find on Cisco switches. One of these features is called “Private Vlan”. The concept of “Private VLAN” is very useful in […]
Cisco VPN Configuration Guide – By Harris Andrea
I wanted to let you know about my new eBook “Cisco VPN Configuration Guide” which I have launched recently. This ebook (PDF Format) consists of 240 pages filled with raw practical concepts, step-by-step configuration tutorials, around 40 colorful network diagrams to explain the scenarios, troubleshooting instructions, 20 complete configurations on actual devices etc. There is […]