You may think you speak "Standard English straight out of the dictionary" but when you step away from the Great Lakes you get asked annoying questions like "Are you from Wisconsin?" or "Are you from Chicago?" Chances are you call carbonated drinks "pop."
Japanese fact of the day: The Japanese kanji for "man" (男 = otoko) is a combination of the kanjis for "rice paddy" (田 = ta) and "force" (力 = chikara). x_x
Japanese is a very fascinating, beautiful and interesting language, learning it is definitely challenging (which makes it interesting and worthwhile) and I've been planning to learn it for quite some time. Now I finally decided to actually start learning it. I already figured out some of the basics and learned a few hiragana. 'gotta get a few books after christmas and learn a few more hiragana and katakana until then. Ganbatte, me!
The hacker is back. My server is being attacked since 28 hours straight, now. We just requested the attack log from our ISP and are going to bring a charge against the hacker.
WTF!? The attack on my webserver is a professional one! And the longest one ever experienced by my Internet Service Provider (ISP). Which is totally nuts because it's one of the biggest ISPs in Europe! It's a DDoS SYN-Flood attack (Distributed Denial of Service - SYN-Flood) and works like this: DDoS: Several Computers Worldwide get hacked by a hacker who then infects them with a program that does nothing else but attacking our server without the owner of the infected hacking computer noticing. We're talking about insane numbers of hacked computers worldwide here. Those computers start a SYN-Flood attack on our server: To establish an internet connection between 2 PCs (client and webserver [http], client and mailserver, 2 computers communicating with messengers, 2 computers communicating with filesharing tools, .......) using the TCP protocol (very common. for simple messages without any sort of connection and delivery control the alternative is UDP) those PCs need to run through a handshake procedure. The 3-way-handshake-protocol of TCP: The computer that wants to connect sends a SYN (synchronize) message containing a random number to the other computer. That other computer now responds with a SYN/ACK (synchronize/acknowledged) message containing an own random number for the SYN and the number it received + 1 for the ACK. Now the 1st computer has to respond with an ACK containing the sent random number + 1. Or an RST (reset connection) or FIN (terminate connection). Since the connection only becomes established, confirmed and controllable after that last step there is no way to know whether the 1st computer received the SYN/ACK. So as long as the server doesn't receive an ACK, RST or FIN it has to assume the SYN/ACK timed out and send it over and over again. Resulting in a huge memory leak due to many server processes for all the connections, heavy CPU load because of all the connections and huge amounts of datatraffic. Which basically results in the server not being able to offer its services and generating lots of expensive datatraffic. Just imagine running 60.000ish programs on your computer. Same effect. The program the hacker has distributed on his hacked computers only sends the first SYN but then doesn't do anything else, which requires quite some programming skills because usually the handshaking is done by the operating system.
Sooo now you all know what's happening. A professional hacker has been running a worldwide DDoS SYN-Flood attack targeted on our server for the longest timespan our huge european ISP has ever experienced.
SYN-Flood - or - How do you get me to sue you in 2 hours.
[Sep. 2nd, 2005|09:43 pm]
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Sooo... Someone seems to have some fun killing my Server by SYN-Flooding it. Just in case the attacker is reading this.... The attacks are being logged while the server is down. We're gonna get you... And the longer the server and the hosted commercial sites are down the more fun you're gonna get with us.
sO now i'M SiTTing hErE WrITIng tHis poinTLESs tExT. LoOKS PrETTy StUpiD, doesn't IT? WelL, maYBe iT mAkES more SeNSe tHan it Seems. on THE oTher HAnD side IT pRobAbLY DoeS'Nt. sEE YOU! D.
Ten years ago: I loved to play computer games with networked computers with my formerly best friend.
Five years ago: I was at a driving school to get my drivers license.
One year ago: I finished my first year at the university.
Yesterday: I went barbecueing with a few other people from this hallway in the nearby park.
Today: I'm gonna go to the movies to see The War of the Worlds.
Tomorrow: I don't know yet.
Five snacks I enjoy: Zwiebelmett Brötchen, (Roll w/ raw meat, onion and pepper.), Carazza, Jaffa Cake, Cheeseburgers, Pears
Five bands that I know the lyrics of MOST of their songs: JBO, Die Ärzte, Die Schröders, Die Toten Hosen, Wir sind Helden (I guess)
Five things I would do with $100,000,000: Study Game Programming at the Games Academy in Berlin, build the most modern and fun house that the world has ever seen, get a pilot license and something I can fly and I'd take a few people to a certain meeting. ^^
Five locations I'd like to run away to: California, Canada, Australia, Japan (for a short while), dunno (Preferrably big cities near the beach. ^^)
Five things I like doing: Going to the movies, Bowling, Travelling, Playing computer games, Programming
Five things I wish I could wear: Ermm... I have no idea.
Five TV shows I like: Stargate SG-1, Stargate Atlantis, TV Total, Stern TV, Tru Calling
Five movies: The Matrix, Lord of the Rings, Shrek, Ice Age, Summer of the monkeys
Five famous people I'd like to meet: Five? That's a tough one... Katie Stuart, Michael Morhaime, ... after 10 minutes of thinking I gave up.
Five biggest joys at the moment: Holidays, Going to see the Blueman Group in Berlin, Going to go on a barbecue with a few internet friends in Switzerland, Going to the movies quite a couple of times, Going to go playing Gotcha with few people soon.
Five favorite toys: Laptop, Levitating Disco Globe (But it's broken so I gotta get a new one some time.), Digital TV Receiver, erm..... nothing else.
Five People who I would like to see do this: tgwozdz, katiestuart, angelrings, michaelwelch, timaeus_de
Hmmm... I wonder whether I have to know that for the multimedia test tomorrow:
MPEG-1 Audio is defined by ISO/IEC 11172-3:1993 Part 3 (ISO IEC JTC1 SC29 WG11)
Lol?
For all those who went all o.O over that: ISO = International Standards Organization, IEC = International Electotechnical Commission, JTC1 = Joint Technical Committee 1, SC29 = Sub-Committee 29, WG11 = Work Group 11 (moving pictures with audio), ISO/IEC 11172-3:1993 = Coding of moving pictures and associated audio for digital storage media at up to about 1.5 Mbps, Part 3 = Audio.
Finally - Another point removed from my agenda. :) If you like playing around with image spectrums you may want to play with the DCT Tool (Input value range: -128..127) I had to program. It's a part of the JPEG compression/decompression procedure and responsible for the transformation of a block of picture data to its 2-dimensional color-spectrum. The complete sourcecode is available here.
Oh. I always thought the biggest christmas tree of the world would be the one in front of the Rockefeller Center in NY. As I found out today it's only half as tall as the real biggest christmas tree of the world... which is in Dortmund and thus only a 10 minute walk away from here. 8-O This one is 46 m = 150.9 ft high. (The NY christmas tree 2002 was 76 ft high.) ehh... wow.
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