MoInSTL wrote: » I'm not crazy about the OSI model but I have been exposed to it somewhat when I was studying for Network+. Same for TCP/IP.
veritas_libertas wrote: » The OSI model will never disappear if you plan on doing Network Administration or Systems Administration. It's something you really should know inside and out.
MoInSTL wrote: » I'm not crazy about it because I don't know it forward and backwards yet. I am guessing for the Security+ exam I will have a thorough knowledge when I am finished. ATM I can only recall the saying to help memorize the layers and their names. Please Do Not Throw Sausage Pizza Away. Hey, it's been 7 years.
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Darril wrote: » SSL... Starts with an "S". Session layer starts with an "S" That would be easy to remember if SSL operated on the Session layer...
Darril wrote: » I thought someone may respond to this, but for clarification, SSL does operate on the Session layer (Both SSL and Session start with an S). And TLS operates on the Transport layer (Both start with a T). If you learn the OSI model inside out, you'll know this stuff as well as your ABCs, but if you're not so close to the OSI model, a few memory techniques certainly help. Darril Gibson Author: CompTIA Security+: Get Certified Get Aheadwww.sy0-201.com Security+ BlogSecurity Plus: Get Certified Get Ahead Security+ Tip of day Tweets twitter.com/DarrilGibson
Turgon wrote: » SSL is one of those protocols that does not fit cleanly into one or other layer of the beloved OSI model. The debates rage on I should add that things can become even more confused when people confuse the DoD and OSI models layer definitions.Network Security: Detailed info on [CISSP-D] Re: SSL/TLS - Where in the OSI model?
Darril wrote: » Yes, I agree. Just as you state, it's one of those protocols that doesn't fit neatly in the OSI model. It is simplistic to state that it operates on the Session layer. "What layer does SSL operate on?" It really doesn't seem like a fair question to ask. However, too many students came back to me asking me that question after taking the test. When teaching Security+ classes now, I suggest the following strategy if asked what layer SSL operates on. 1) Look for Session layer and pick it first. 2) If Session layer is not listed, look for Transport. 3) If asked what what two layers SSL operates between, look for session and Transport. The strategy seems to be working. Darril Gibson Author: CompTIA Security+: Get Certified Get Aheadwww.sy0-201.com Security+ BlogSecurity Plus: Get Certified Get Ahead Security+ Tip of day Tweets twitter.com/DarrilGibson
abefroman wrote: » Will TLS always be at the transport layer or can that be session too?