Joel R. Voss
jvoss@myuw.net
I have a box in <company>'s rack (207.244.153.137). I have noticed that although everything works perfectly (431 days uptime) I have a problem with data transfer rates to machines in the Westin (2ms and 4 hops away). I suspect that there is some type of router that is seriously mucking stuff up with the link. It makes sense that it'd be on your turf. I thought I'd let you know and see what you think. It's quite likely that I'll be moving my server to the Westin soon, but it is important for you to ensure proper workings of your systems. Also if I ever want to host something in Bothell, I'd go with your company.
From DSL, I can get 140KB/s from my server in <company>'s rack or from the Westin. From my server in <company>'s rack, I get uneven 40KB/s and 80KB/s from the Westin. It is very pronounced. What is going on?
Read more »Network Mapping 4
jvoss@altsci.com
jvoss@myuw.net
May 13, 2007
Source not yet available. It will be available soon.
Visualization of networks is an interesting topic whether the networks are intranet, ethernet, real world, social or inside a program tree. I have written software that simply maps data arbitrarily so that it can be seen. It sorts itself and is very quick. It outputs to SVG, which can be scaled, accessed via xml dom, modified, regexed, and output to raster formats (PNG, GIF, JPEG, etc).
jvoss@altsci.com
jvoss@myuw.net
May 1-7, 2005
TCP Dump and libpcap
Wireshark
Libpcap is a very simple library to get the data from packet capture files. TCP Dump is a program that captures data from interfaces. It can also print the data it captures in realtime or later. Wireshark is a GUI program that reads cap files (and can also capture data) and displays the information very well.
Read more »Practical Cryptography and Cryptanalysis
by Joel R. Voss aka. Javantea, help from Crash
jvoss@altsci.com
jvoss@myuw.net
Sept 22, 2006
Update: May 9, 2007
Crypto1 0.3 Source
[sig]
Crypto1 0.2 Source
[sig]
GPG is an easy and open source public key encryption solution. Many e-mail
clients support it as well as a few IM clients. Neg9 uses
GnuPG for secure e-mails. Crash's key
expired recently, which allowed us to discuss how to update the key. Crash
already generated a new key which he signed with his old key. You can download
his new key at his website. When you import
the key
gpg --import crash_pub.asc, it will be properly usable.
with the signatures that you may have done during a keysigning with Crash's old
key.
