Monday, 7 January 2013
Unified Communications UC SSL Certificates
A Unified Communications certificate, or UC Certificate for short, is a
new type of certificate developed primarily for use with Microsoft Exchange
2007 and Microsoft Office Communications Server 2007 products. The defining
feature, and really the only thing that makes a UC Certificate different from a
normal certificate, is the use of the Subject
Alternative Name field
in the certificate. In the Subject
Friday, 4 January 2013
Tuesday, 16 October 2012
Swap Space in Linux / RHEL / CENTOS / Fedora
- Swap space is hard disk space that extends
system RAM.
Swap space or virtual memory is hard disk
space that acts as an extension of system RAM. Of
course, due to the relative differential in data access on RAM versus hard
disk, we prefer not to use swap space if it can be avoided. Nonetheless, it is
vital to the proper functioning of a typical Linux system that some swap
space be made available.
Tuesday, 25 September 2012
what is ethical hacking ?
Ethical hacking is where a person hacks to find weaknesses in
a system and then usually patches them. For example, a bank may pay a hacker to
hack their systems to see if it is hackable. If he gets in, then they know
there is potential for other people to hack in, and usually they will work with
this ethical hacker to patch these holes. If he doesn't get in, then they pray
that nobody is better at hacking than him.
Let me add this.
Hacking is simply exploring a computer's designed features, and learning how to
exploit or take advantage of those features. As an example. a computer is
designed to load instructions into memory using clearly defined rules, outlined
in an RFC that spells out how to load something into memory.
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