Subnetting Notes for Beginners
Here are some notes on IP subnetting for beginners. 1 and 1 = 1, everything else = 0. An IP v4 IP address is 32 bit and made up of...
Linux
How to install OpenVPN 2.1.x on CentOS 5 using RPM’s
1. Download and compile pkcs11-helper Download from http://www.opensc-project.org/ wget http://www.opensc-project.org/files/pkcs11-helper/pkcs11-helper-1.07.tar.bz2 Compile:
OpenDNS is adding a Singapore Datacenter
Good news for those of us in Asia using OpenDNS! In their October 2010 newsletter, OpenDNS announced that later this year they will adding a new datacenter in Singapore to...
Remove advertisments from Untangle Web Filter
If you are running Untangle’s free “Lite” package, you may have noticed that advertisements are now shown in the bottom of block pages generated by the Web filter. Untangle announced...
How to send an attachment from the Linux shell
Occasionally I have a ZIP file I need to transfer to myself from the shell (*nix) and SCP is not always available. UUencode, part of the sharutils package, does the...