5 Things Every Network Needs

Run a service provider network, enterprise, commercial, health, financial, or retail network?  Run any sort of network? Well then, here are 5 things your network NEEDS today! Redundancy Security Capacity Management Logging (SIEM) Application/Customer/Endpoint Visibility  Redundancy Have you ever owned a computer that didn’t blue screen or give you the spinning beach ball of death? … Continue Reading

DDoS Protection with NetFlow

DDoS Protection: The Problem with NetFlow

“Netflow collection.” This is what I kept hearing from DDoS providers when I asked how they monitored networks.  But there are a couple problems with utilizing NetFlow. Problem 1: Sampling Rates… I’ve very rarely seen a sampling rate of 1 on routers.  Cisco’s CRS shelves and ASR9ks as well as Juniper’s TX Matrix Plus and MX960s are certainly capable … Continue Reading

Down for a couple days…

I upgraded this server from OS X Mountain Lion Server to OS X Mavericks Server two nights ago….. The server is remotely managed by Macstadium and they HOOKED me up when it didn’t return from the upgrade.  They rebuilt the upgrade from USB and  put it back where it needed to be!  Kudos to Phil @ … Continue Reading

Network Diagrams…. You NEED them!

There is so much truth in the saying “a picture is worth a thousand words”. Pictures matter, especially in the technical field! I majored in Computer Science in college.  These days, “Computer Science” should be called “Computer Programming”.  They taught the OSI model from layer 1 to layer 7, but the majority of the time was spent on application … Continue Reading

How to Add a Route in Mac OS X Mavericks

Ever have need to access a network that your default gateway (router) doesn’t know about?  Just add the route via the CLI/Terminal on a Mac OS X running Mavericks! The command is sudo route -n add (network) (gateway)

What is a Network? #NYTechDay

I spent a few hours at a trade/tech show yesterday in NYC.  My company sponsored a portion of the show and wanted to show off their shiny new network architect in their booth, so I sat down and prepared myself for the deluge of questions. I’m not sure what I was expecting.  Maybe a little … Continue Reading

Layered Security on A Network Device

I recently co-authored a whitepaper discussing the layered network security approach typically implemented with PCI Compliance. This got me thinking about layered security in general. Data center security, network security, application security, physical security, and national security… One thing these entirely different security architectures have in common is the layered approach to securing critical assets. … Continue Reading

Enable VNC from Command line on a Mac

I rarely use VNC because there are more secure methods of remote management out there. But sometimes, when those methods fail, I need a backup. Here’s a way to turn on VNC from the command line in Mac OS X:

If you need to reset the VNC password via command line use this command … Continue Reading

Segmenting Datacenter Servers (Security and Performance)

In data center networking, you really don’t care what is hosted on a server. Let’s face it. You know it’s true. Some business unit probably calls this app “critical”. It probably generates a report that 3 people in the company see. But it’s important to them. To you, it’s a VLAN, an IP address, a … Continue Reading