Apples file permissions and extended attributes and ACLs

September 26, 2009 Posted by

Whilst i realize this is not ‘linux’ is is unix based and has a similar permissions and command line. I recently upgraded my OS X laptop to Snow leopard. Being the good sysadmin I am i made sure i used Time Machine to backup all my files and data to an external drive. I used […]

Preventing DoS attacks before they become a problem

September 25, 2009 Posted by

I came across this little gem not to long back which is handy. It basically blocks IPs depending on the amount of connections they have. The defaults are fairly reasonable at 150 connections, and its remarkably easy to install. wget http://www.inetbase.com/scripts/ddos/install.sh chmod 0700 install.sh ./install.sh Presto, now its installed! If you want to customize it […]

Safe rm – stops you accidentally wipeing the system!

September 21, 2009 Posted by

I found this the today http://www.safe-rm.org.nz/ , and having had the odd accident im most definitely going to be installing this on my own server! What is safe-rm? Safe-rm is a safety tool intended to prevent the accidental deletion of important files by replacing /bin/rm with a wrapper, which checks the given arguments against a […]