In Part I, I provided some background information on the OSI layer, some of the protocols and on security. In Part II, I’ll be discussing the different network security protocols: IPsec, TLS/SSL and SSH.
As an IT security professional, one of the areas where I gained a significant amount of knowledge and experience in is network security. Working for a telecommunications company, it’s pretty much a given that if you are working in security, you are dealing with network security protocols such as IPsec, SSL/TLS and SSH. I started off primarily working with IPsec and eventually was exposed to TLS and finally, SSH. One of the real issues that I first encountered was differentiating between these network security protocols. It took me time to be able to understand and explain the following:
“What is the difference between these network security protocols?”
“Which one shall I use?”