JDYDJ: A Sysadmin Corner
Friday, March 02, 2001

Here is a fascinating network research page whose title says it all: Measurement Studies of End-to-End Congestion Control in the Internet. The page is regularly updated by its author, Sally Floyd, and contains links to the latest scoop on real network numbers. As seen on the End to End Interest list (end2end-interest at postel.org, isi.edu, and other fine places).




Thursday, March 01, 2001

Very nice resource table showing WKS (and not so WK S) ports, with a link explaining the service bound to each port.




Tuesday, February 27, 2001

Catching up on Dave Weinberger's excellent JOHO (even when I don't agree with what he says, I like the way he says it!), and found my way to the charming and useful Tweak Files site, chock full of shareware and freeware tools to mitigate the unpleasantness of an OS many of us would rather not deal with. As their motto goes, "If It Aint Broke, Tweak It!". Sysadmins at heart.




Friday, February 16, 2001
NTP "FAQ" #3 (10/97 - 4/98) - Articles (part 5)

Ie, care and feeding of your NTP GPS stuff....




Monday, January 22, 2001

Looking for a freeplacement for Visio? According to the published pages,
Dia is a gtk+ based diagram creation program released
under the GPL license.


Dia is designed to be much like the commercial Windows program 'Visio'. It can be used
to draw many different kinds of diagrams. It currently has special objects to help draw
entity relationship diagrams, UML diagrams, flowcharts, network diagrams, and simple
circuits. It is also possible to add support for new shapes by writing simple XML files,
using a subset of SVG to draw the shape.


It can load and save diagrams to a custom XML format (gzipped by default, to save
space), can export diagrams to EPS or SVG formats and can print diagrams (including
ones that span multiple pages).



Unfortunately, since VISIO uses a proprietary format, Dia can't read and save VISIO files. So there's still no interoperable freeplacement for it, but perhaps when Microsoft converts it to use XML that could be fixed.




Friday, January 12, 2001
SANS Institute: Information Security Reading Room is a lovely resource, and another place to spend an afternoon reading up on things you'd always meant to read someday.


Public Patches is a nice little interface from Sun to let you search the "recommended" patches, ie the ones that you find out about when you don't have a support contract. :-) You can search them sorted by operating system, product, Y2K, and security. Not bad!


Tuesday, January 09, 2001
Slashdot:Ask Slashdot: Building a Large Email Service has an enormous comment trail full of pure gems hidden in the stable sweepings. It dates from end of July 2000.