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Evil Routers

Last Build Date: Thu, 14 Dec 2017 01:42:59 +0000


OpenBSD Violates NTP Pool Guidelines

Wed, 01 Jul 2015 23:07:10 +0000

Note: When I began writing this, I was going to go into a lot more detail, explaining ntpd (the reference implementation), OpenNTPD, the NTP Pool Project, etc. I may do that in a follow-up post but, for now, I’ll keep it short and to the point. The NTP Pool Project has a set of “basic […]

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Wed, 24 Jul 2013 12:29:50 +0000

I’m a pretty easy guy to get along with, I think. I’m fairly laid back and there’s not a whole lot that really bothers me. It takes a lot to truly upset me. While some people (especially many of the women I have dated) would, when questioned, insist that I am a “grade A” asshole, […]

When CCIEs Get Bored

Sat, 09 Feb 2013 16:36:20 +0000

Now that Ryan Werber (“Scrye” on Freenode #cisco) has passed the CCIE exam and became #38168, he apparently has some extra free time on his hands. Update: This “Star Wars Traceroute” has been propagating (see what I did there?) like wildfire in the nerd-o-sphere since I first published this post. Since then, Ryan has originated […]

99 Problems But A Switch Ain’t One

Fri, 02 Nov 2012 15:05:41 +0000

Tom Hollingsworth laid down a nice little rap in the Day 1 Wrap-Up Video at Network Field Day 4, but it looks like he may have some competition — from inside Cisco, no less! From the video description: The group of new hires at cisco were told to make a parody music video for fun. […]


Thu, 18 Oct 2012 14:15:35 +0000

In a previous life, I worked at a .edu and lived, roughly, across the street from the building that housed IT. I don’t recall what it was that caused me to go to work that Monday evening, the third day of a three-day (holiday) weekend, but as anyone who works in IT would likely agree, […]

Why Best Practices Are Important (or: How I Pwn’d The Shit Out Of My ISP)

Fri, 28 Sep 2012 14:41:38 +0000

Note: The events described herein took place many, many years ago (the statute of limitations has long since expired!), but the moral of the story remains the same. This topic came up on IRC a few nights ago and since a) several were interested in the story and b) I’m heading out to DerbyCon shortly, […]

Cisco Nexus 3548 Switch: 190 nanosecond latency

Wed, 19 Sep 2012 12:00:37 +0000

Hot on the heels of the new Arista Networks 7150S series top-of-rack switches that offer latencies as low as 350 nanoseconds, Cisco came out with an announcement of their own, shattering the land speed record in the process. The newest addition to the Nexus line of high-performance datacenter switches, the Cisco Nexus 3548 is a […]

Beer, Bikes, Boats, Babes, and Blogging

Wed, 15 Aug 2012 17:30:40 +0000

If you communicate with me via e-mail, IRC, or Twitter, you’d know that I haven’t really left. A question recently asked on the Evil Routers Facebook page, however, made me realize that I really need to start hanging out in the blogosphere again: Indeed, the last post here on Evil Routers, “IPv6 — It’s Not […]

IPv6 – It’s Not An Option

Fri, 11 May 2012 17:15:19 +0000

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 […]

Cisco ASA: “read-only file system”

Thu, 22 Mar 2012 01:08:56 +0000

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 []? Source filename []? asa842-k8.bin Destination filename [asa842-k8.bin]? Accessing tftp://!!!!!!!!!!!!!!!!!!!!!!! ... Writing file disk0:/asa842-k8.bin... %Error opening disk0:/asa842-k8.bin (Read-only file system) ciscoasa# […]