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Hugo Rumens posted a note on 10 November 2008 - 5:06pm.
ssh tunnels
I have been trying to get my head around ssh tunnels lately as I need to be able to access a development web server on our private network that doesn't have an IP accessible from the internet.
It's taken me a while to understand what is going on; it can be pretty confusing.
I'd recommend the following for a good explanation of what ports are used, e.g. when your browser requests a page:
http://www.tcpipguide.com/free/t_TCPIPClientEphemeralPortsandClientServerApplicatio.htm
And I thought this was probably the best single page explanation of tunneling:
Hugo Rumens posted a link on 7 November 2008 - 11:37am.Linux commands
Link:
http://ask.slashdot.org/article.pl?sid=08/11/05/2027234&tid=130 Slashdot had a great comment thread on helpful/stupid linux commands the other day - "cd" is one of the most basic commands in linux and one of the first you learn, but I never knew that "cd -" would change your directory back to the last one you were on.
The best comment though was the Russian Roulette method to delete something (the original had rm -rf / of course):
[ $[ $RANDOM % 6 ] == 0 ] && rm some-file-to-delete || echo "You live"
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