Monday, November 14, 2016

Rethinking Micro-segmentation

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Traditional Security Architectures Traditional security architectures enforce security policy at rigidly defined trust boundaries. At the ...
1 comment:
Thursday, October 6, 2016

Big Data Analytics for Your Network

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The help desk just called. Users are reporting the wireless is down in your office, and nobody can get on the network. The wireless seems fi...
Friday, September 9, 2016

Mnemonic: Syslog Severity Levels

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Ever have trouble remembering syslog severity levels? I was organizing some old study notes and came across this mnemonic . It's...
4 comments:
Saturday, September 3, 2016

Spanning Tree Protocol Visualization - Initial Convergence

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Spanning tree: everyone's favorite protocol! Thousands of pages have already been written about spanning tree, so I've decided to ta...
1 comment:
Tuesday, August 9, 2016

Opengear and the Evolution and Consolidation of Network Devices

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Opengear at Tech Field Day Extra 2016 I recently attended Cisco Live 2016 in Las Vegas and was invited to attend Tech Field Day Extra as...
Friday, February 5, 2016

Configuring ERSPAN on Cisco Routers and Switches

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In two recent posts, I covered SPAN , for mirroring traffic to a port on a local switch, and RSPAN , for mirroring traffic across a VLAN to ...
3 comments:
Saturday, January 30, 2016

Configuring RSPAN on Cisco Catalyst Switches

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I recently wrote a post on configuring port mirroring (SPAN) on Cisco Catalyst switches .  SPAN (switched port analyzer) allows you to mirro...
2 comments: