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I was head sysadmin for an ISP for about 2 years. During that time, we had a handful of DoS's. One was against a co-loc. Two were against our shell boxes. One was against a user's dialup. In the latter 3 cases, I did drop the accounts. I did so not out of censorship or whatever else you want to say against this ISP. I did it because this person had brought about an attack that totally prevented us from carrying out our business. These DoS's annihilated both our T1's, and even made a dent in the multiple-T3 bandwith of our upstream provider, for several hours during peak times. That's several hours of a few hundred people not being able to use the Internet connections they are paying for. DoS's are not unprovoked; they are partially the victim's fault (at least I have yet to find an instance where it isn't).

If a user is somehow adversely affecting the way the network runs, especially if it's interfering with other customers' use of the network, then the admin has the right to pull the plug on the user. It's no different than setting quotas on disk use so people can't fill up an entire hard drive, disabling a slashdotted site that is dragging a webserver to its knees, cutting off the shell account of a user who won't quit screwing up the shell server, or k-lining someone's IP address. When you have a few hundred people under your administrative responsibility, the good of the many outweighs the good of the few.

Downloadable archive of some of the information from xenu.net. Also check out the Google cached version of the site.

-Z-

my mirror's here

The "lite" version is here

Bring it on, CoS. This is my ISP (I'm the sysadmin), so it'll be a cold day in hell before this site goes down.

... look no further than http://movies.soren.cinternet.net/.

Peace out.
surak@my-dejanews.com

http://movies.soren.cinternet.net/macbeth.mov

if you need it.

... are by far the best training tools (plus they're cheap!). I've been a sysadmin at a decent-sized ISP since February. I started the job with basically no knowledge of networking and only a few month's occasional-use familiarity with linux. Now I've taught myself a glut of skills (see my resume) by messing around with the system, exploring, and lots of reading: manpages, mail archives, LDP, source code, anything. There's no better way to learn than by doing.

Okay, one request first: anyone not using a 64K ISDN or faster connection, stay off this site until we let some people with real bandwidth get the files mirrored. And if you do have a fast connection, please offer yourself as a mirror. More mirrors == less strain on the servers.

And now the drumroll: go see my collection of movies (I have most of the ones from the site, but not the South Park one) at:

ftp://ftp.soren.cinternet.net/movies/

It's a 50-connections max site, so please remember the ground rules before you contribute to the /. effect.

I have 18.5 megs of it on a server behind a T1, and I'm willing to let the /. effect on it if I can just get the rest of the movie. Email me please if I can get the other 1.5 megs from you.