Here's some information about what I'm interested in.
PHP
I'm into PHP and I like web design, but honestly, I'm terrible with graphics and design.
I like my websites to be as simple as possible (I try to follow the KISS principle [Keep It Short & Simple]).
I really don't get why people (well... companies) flood their websites with heavy images and Flash.
In my opinion, that just distracts from the actual content and usually wastes bandwidth (and makes things slow!).
Although I do like PHP a lot, I don't think I would ever like to be a full-time programmer - I'm much more interested in network security and server administration.
Programming (and debugging) can be extremely stressful and I think I'd get sick of it very quickly as a career.
Linux
Lately, I've been avoiding Microsoft Windows as much as possible.
Linux is a pretty cool operating system and it's pretty much all I use.
I use Ubuntu for my desktop and laptop, but I love Arch Linux for servers.
I don't really get why people stick with Windows when they get tons of viruses or it becomes incredibly slow and bogged down.
I always think about how companies like Lavasoft (Ad-Aware) and Symantec (Norton Anti-Virus), among others, shouldn't even have to exist.
Maybe I'm crazy, but shouldn't systems be secure by default and not require third parties to fix things for them?
Networking
Over my past few years of using Linux on a daily basis, I've set up a couple of servers.
I've come across quite a few different networking protocols and services that I've learned to configure, work with, and basically just play with.
I've managed httpd (Apache), iptables, lighttpd, ntpd, mysqld, bind, pptpd, openvpn, proftpd, vsftpd, sshd, tftpd and a few other random services.
I've never really been able to do much with a mail server though - it seems awfully difficult and Google Apps suits my needs perfectly.
I also have a few old Cisco routers and switches that I got cheap off of Craigslist which have both helped me learn quite a bit.
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