Monthly Archives: January 2014

Using Python with Templates to Build Consistent Device Configs

It has been a long-held and accurate notion that configuration consistency is key to running a secure and reliable network. There are many commercial and complex tools on the market that help achieve this goal. However, it isn’t always necessary … Continue reading

Posted in Network, Security, Technology | 8 Comments

Blog Spotlight — Cisco Inferno

Cisco Inferno is a blog about all things networking. Don’t let the name fool you, this isn’t just a Cisco site.  A work or my friend from down under, Anthony Burke, Cisco Inferno covers topics ranging from Juniper certification, software … Continue reading

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Software Piracy Isn’t Always a Choice

Scrolling through Facebook today, I happened upon one of those sponsored links. The advertisement immediately caught my attention for a few reasons. First, I too believe that software developers, like everyone in this industry should be appropriately compensated. Furthermore, customers … Continue reading

Posted in Rant, Technology | Tagged | 3 Comments

First Look at the CCNP Security Refresh

Today Cisco announced a significant update in the CCNP Security program. As with other program changes, Cisco is allowing candidates time to complete their current studies. However they are aggressively moving everyone toward the new curriculum. Those having already passed … Continue reading

Posted in Certification, General, Security, Technology | Tagged , , | 10 Comments

Using IPvFoo to Determine IPv4 and IPv6 Site Connections

I’ve been running IPv6 off and on for a couple of years on my home network. I’m always curious how the deployment of IPv6 has progressed and have previously monitored my traffic using NetFlow and NFSen. Desiring a more immediate … Continue reading

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Let’s Make Things Better with Technology

I recently went to a local restaurant for dinner with my family. Walking through the door, I’m greeted with nearly a hundred others who are also waiting for a table. Looking at the disconnection between their systems and the customers … Continue reading

Posted in Rant, Technology | 1 Comment

Cisco Announces 2014 VIPs for CLN and CSC

Earlier today, Cisco announced those who will be part of their Designated VIP program for 2014. This program encompasses both the Cisco Learning Network and Cisco Support Community. This is one way that the company recognizes those who spend a … Continue reading

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Network Link Conditioner – Simulating a BAD Network

Last week, I wrote an article about Building a BAD Network with Dummynet. While the goal of that article was to document a flexible “drop-in” solution that would create performance issues on a given Ethernet segment, this week’s article will … Continue reading

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10 Most Visited PacketU Articles of 2013

Based on page views, the following articles were most interesting to readers in 2013. Typical NAT/PAT Configuration Comparison for ASA 8.4 The ASA’s ARP Behavior Traceroute Through the ASA The Woes of Using an ASA as a Default Gateway ASA … Continue reading

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Building a BAD Network with Dummynet

We typically strive to build networks that are fast, error free and introduce minimal latency. However, there is sometimes a need to build something that doesn’t work well. One use case might be to test real world application performance against … Continue reading

Posted in Network, Technology | Tagged , , | 8 Comments