What is the issue with re-marking and OoO packets?

This question, taken from the CCDE Written Outline, taught me something new. Since that’s the purpose of any certification, I welcome these interesting, if somewhat vague, questions. The main issue with re-marking and Out-of-Order packets can be found in RFC3819: (aka BCP89) “reordering does come at a cost with TCP as it is currently defined.Continue reading “What is the issue with re-marking and OoO packets?”

CCDE Written Outline Topic 5 : Security

Topic 5 : Security is not fleshed out as far as the other four topics, so I thought I would tackle it first. Explain the impact of security availability design in the characteristics of a network.What does this mean? Let’s dig into the subtopics and see if we can find an explanation. OOB Access –Continue reading “CCDE Written Outline Topic 5 : Security”