Colin McNamara - CCIE 18233 , VCP, RHCE, GCIH, GEEK

Technical reviews and articles from a CCIE with extensive experience in designing and implementing converged enterprise networks.

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Measuring and mitigating risk involved with sharing virtual infrastructure between DMZ and Internal environments

September 9th, 2008 · No Comments

Ivan Pepelnjak over at IOS Hints and Tricks wrote a post about DMZ VLAN leaking that got me thinking.
He writes about “the VLAN leaking myth” and how it encourages clients to utilize physically separate network infrastructure in the DMZ’s. Now first things first, I wouldn’t call VLAN leaking a myth. At one time it was [...]

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Tags: hyper-v · virtualization · vmware

Identity aware networking using Cisco TrustSec

February 23rd, 2008 · No Comments

With all the fanfare surrounding the recent Nexus 7000 release I think many people have missed a significant new development in Cisco’s security portfolio. That new development is Cisco TrustSec. TrustSec takes the classic notion of access control based source and destination ip:ports and replaces it with a role and resource based methodology that fits [...]

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Tags: CISCO · DC3.0 · security

Moving towards a Green Data Center - Truth behind the hype

February 22nd, 2008 · 1 Comment

Eplus, Cisco, Hewlett Packard and PG&E held a luncheon this last Friday focused on Green Data Center. I’ll be the first to admit that at first I thought “green” Data Center initiatives were just political and corporate marketing initiatives. I thought they saw Al Gore give some rocking presentation and decided it would be great [...]

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Tags: CISCO · DC3.0 · Green Data Center · efficiency