The L3/L2 Time Machine

“We are consolidating VLANs to simplify the network.” – So said a CIO in a request for me to come in to consult on a LAN “upgrade” project.  This was such funny timing, coming right after my post about network complexity. Anyway, they wanted to convert this: VLAN ID Description 10 Reserved 20 General Data 30 Accounting & Administraton 40 …

Network Complexity

To be or not to be complex That is the question As with so many questions about IT, the answer is “it depends“. Complexity for the sake of complexity, or letting ego drive your designs is a bad idea for a lot of reasons. You probably don’t need to prove that you’re smart. Make your designs as simple as they …

Any Common Sense?

SME (SONY Music Entertainment, Inc.) does it again. Those brave soldiers of greed have once again set forth on the field of battle to save the world from another bit of free enjoyment. You have undoubtedly seen this image when trying to view content on YouTube: Let me clarify one thing – I am a capitalist. The 99% Occupy Wallstreet …

Barracuda Networks ESS Internal Mail Routing

I ran into an email delivery issue the other day that seems likely to come up here and there. My customer could receive email inbound from a domain of a vendor they do business with, but suddenly could no longer send messages to them outbound. All I had to go on was the following NDR (modified to protect the innocent): …