Evil Routers

IPv6 – It’s Not An Option

May 11, 2012

Those of you who know me in real life are probably quite aware of just how much of a dislike I have for sales and marketing people. That’s why whenever they make themselves look like idiots, I like to acknowledge it and recognize them for it. Besides, marketing folks tend to believe that any publicity [...]

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Cisco ASA: “read-only file system”

March 21, 2012

Recently, while upgrading a Cisco ASA that belongs to a customer and hasn’t been touched in a long time, the following took place: ciscoasa# copy tftp flash Address or name of remote host []? 10.10.10.42 Source filename []? asa842-k8.bin Destination filename [asa842-k8.bin]? Accessing tftp://10.10.10.42/asa842-k8.bin…!!!!!!!!!!!!!!!!!!!!!!! … Writing file disk0:/asa842-k8.bin… %Error opening disk0:/asa842-k8.bin (Read-only file system) ciscoasa# [...]

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How To Upgrade Cisco ASA Software And ASDM

February 15, 2012

After writing about how to upgrade a Cisco ASA license, I received a few messages asking about upgrading the Cisco ASA software. Fortunately, just like upgrading IOS on a Cisco router, it’s an easy, straightforward process that you can knock out in a few minutes. In this walkthrough, we’ll be upgrading the the ASA software [...]

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Wireless Field Day 2

January 17, 2012

I’ve been very fortunate to have been asked not once, but twice, to attend Net Field Day. As you probably already know, these are awesome events that bring together vendors with a handful of end users (who just happen to be bloggers). Over the weekend, I heard from “the man” Stephen Foskett, who asked if [...]

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How to Upgrade the License on a Cisco ASA

December 16, 2011

The different licensing “levels” available on the Cisco Adaptive Security Appliances allow an organization to buy only what they need while retaining the option to upgrade in the future, if necessary. For example, a small business with 15 employees may start out with a Cisco ASA 5505 with a 25-user (or, more correctly, 25-host) license. [...]

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HP Eliminates Premium Licenses; Existing Customers Shafted

December 14, 2011

A few weeks ago, Sreeram Krishnamachari, Global Product Line Manager at HP Networking, authored a post on the HP Networking blog entitled “Say goodbye to firmware licenses in wired network switch products”. In that article, HP has acknowledged, finally, that firmware licenses — in addition to easily adding tens of thousands of dollars in CAPEX [...]

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life# reload

December 12, 2011

If you’ve been reading Evil Routers for a while, you already know that, back in May, I quit my job. The idea was that, after I took care of some things here, I’d eventually move to the west coast. Basically, that never happened. I got lazy over the summer and did absolutely nothing that I [...]