Post thumbnail of Fixing slow or broken NFS mounting issues
9 November 2009
Continue reading Fixing slow or broken NFS mounting issues

Fixing slow or broken NFS mounting issues

Make sure a firewall rule isn’t blocking NFS. If NFS is running on the server and clients _can_ mount, but it’s just really slow, then things get a little hairly. You can’t just look for a problem on a client or a fix a misconfigured server. You’ll have to look at the whole ball of wax… If MTU mismatch doesn’t seem to be a problem, try going the other way and increasing the MTU size. Use the traceroute command to look for unexpected routing hops or delays.

Post thumbnail of dd and netcat - like peanut butter and jelly
29 September 2009
Continue reading dd and netcat - like peanut butter and jelly

dd and netcat - like peanut butter and jelly

dd and netcat on one end, netcat and dd on the other. so simple, it’s like magic.

Post thumbnail of Descriptive nmap tcp scanning basics
13 April 2009
Continue reading Descriptive nmap tcp scanning basics

Descriptive nmap tcp scanning basics

I like the description of spending a friday night spent geeking out. It makes me miss my old viewsonic 21″ CRT that I got for ninety-nine bucks from a busted dot com venture capital business back in the 90’s.

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