I currently work for a major ISP in engineering.
I have a strong Cisco background having CCNA, CCNP, CCDA, CCDP, CSSP.
I also have a decent amount of security experience.
Very knowledge about Windows and have my MCSE (not that means much these days)
And I know my hardware inside and out. Also have A+
I'm also a Unix/Linux freak.
Doing so also makes me a perl nut.