ICMP

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urghhhh... what?

Looking at Windows Firewall and it makes reference to ICMP Exceptions. Reading through the MS press book I get a vague jist of what its about but to be honest look at it rather blankly.... WTF?!?

The best I've managed to gather together is that ICMP is a error message delivery thing... - am I barking up the right tree, or am I in the completely wrong forest??

Help?!

 

I understood that it is used for ping and tracert - and I think I was in the right forest for understanding what it does - that page did help. cheers!

I just found trying to understand the ICMP Exceptions section a little confusing, maybe a nights' sleep on it will make it settle in my head a little more

 

You're on the right track so far I think. Here's another link from Wikipedia.

http://en.wikipedia.org/wiki/Internet_Control_Message_Protocol

 

cheers Bill. I read that page before posting and most of it seemed slightly above my head.

I suppose for this exam I don't really need to understand ICMP completely, just what it is and where it fits in - I felt the wiki page was above my level a little

Will revisit it no doubt during the N+

 

I just ran a search on Google for ICMP exceptions if you need any more reading. Lots of hits.

http://www.google.com/custom?hl=en&...1&oe=ISO-8859-1&q=ICMP+exceptions&sitesearch=

 

I prefer to read the RFCs.. check this one written in 1981

http://www.ietf.org/rfc/rfc0792.txt

 

And now I'm with it - see, a little bit of sleep really did help
Thanks for the help guys.