irst-class domain: this price does not include web hosting (someone who will host your website or whatever you want to put up on his server).27. SSH - stands for Secure Shell. This daemon(2) waits for incoming TCP(6) or UDP(7) connections on port 22. Once you connect to it, you will be asked for a Login and a Password, just like the Telnet daemon(19) does, only SSH encrypts everything for increased security.28. Moderated mailing list / message board - I'll explain this by giving you an example. BugTraq (see http://www.securityfocus.com) is one of the best security-related mailing list. Although people can "send things to the list" (meaning send an Email message and have it sent to all the members of the mailing list), you can't just send everything. Aleph1, the moderator, goes through all incoming messages and posts only the good ones.The same goes with moderated message boards, etc'.29. DoS attack - DoS stands for Denial of Service (also referred to as a "nuke" or a "newk"). A DoS attack is some kind of an attack that causes the target computer to deny some/all kinds of services to the users of that computer (local and/or remote users).For example: Winnuke (also known as OOB), the simplest DoS in the world.(Taken from Spikeman's DoS site) This denial of service program affects Windows clients by sending an "Out of Band" exception message to port 139, which does not know how to handle it. This is a standard listening port on Windows operating systems. Users of Win 3.11, Win95, andWin NT are vulnerable to this attack. This program is basically a nuisance program, but it is being widely circulated over the internet now. It has become a bother in chatrooms and on IRC. By using your IP# and sending OOB data to port 139, malicious users can disconnect you fromthe net, often leaving you with low resources and the blue tinted screen. Some of you may have been victims already. If this happens to you on Win 95, you will see a Windows fatal error...
