Holiday Gift Opening Tip
This is a blister pack:
We take gift-giving safety seriously here at the CACE Technologies World Domination Headquarters.
These are aviation shears:
This is what you can do to a blister pack in just a few seconds using aviation shears:
The shears were designed to cut sheet metal. They go through annoying packaging with precision and ease. You know those scissors that can cut through a penny? Aviation shears can cut through a penny and through those scissors.
They’re the best thing I’ve found so far for the job.
Troubleshooting A Slow Web Site
Categories:
Analysis
A couple of weeks ago we had a strange problem in the CACE Technologies World Domination Secret Lair. Loris was having trouble loading the Wireshark blog. It was working fine on my machine so I checked some of the other machines in the office. I found the same problem on one of the development machines. Loading the page in Firebug showed that the object requests were stalling out every 20 seconds or so:
I fired up Wireshark and captured the browser attempting to connect to the blog:
The problem was immediately obvious. The browser attempted to connect to the blog’s IPv6 address (2607:f0d0:2001:e:1::1), timed out, and connected to the blog’s IPv4 address (67.228.110.126).
As it turns out Loris and I ran some IPv6 tests a long time ago and we added unique local addresses to our machines (mine was fd00:cace::4) . Since each machine had an IPv6 address the TCP stack assumed that there was general IPv6 connectivity. However, our ISP is steadfastly ignoring IPv6 so end-to-end connectivity wasn’t there. After timing out the connection fell back to IPv4 and proceeded normally.
Wish List: Decent SVG Network Elements
Categories:
Infrastructure
Nmap 5 has a really cool feature: you can scan a network and dump its map to SVG. Inkscape is turning out to be a really nice vector drawing program.
A really useful workflow would be to combine the two:
Map your network using Nmap. Tweak that map to your liking using Inkscape. Have a cool map. Unfortunately this is a harsh, cruel world we live in. The workflow we currently have is:
Map your network using Nmap. Load the map Inkscape. Search the interwebs for decent SVG network elements until you have to explain the foul language and crying to your wife. This is something Visio is famous for (network art, not the foul language and crying). Search for “visio stencils” and you’ll be bombarded with all sorts of network shapes, from major equipment manufacturers to ones that look like crayon art. Where are all the cool SVG network elements? Quantum Bits made a nice start, but we need a lot more than that.
Comments 🔗Comment by shannon on 2009-12-02 10:09:28 +0000 🔗this is some good info. thanks, by the way is there some wireshark software for the palm pre?