Default Firewall settings?

I was fiddling around in the firewall area and I now want things back to normal. The problem is I can't remember what that is.
System Preferences > Sharing > Firewall > Advanced
What are the following supposed to be, checked or unchecked?
Block UDP Traffic
Enable Firewall Logging
Enable Stealth Mode
Thanks
17" iMac Intel Core Duo Mac OS X (10.4.10)

Hi,
Allan is right, just checked a system where those settings have not been touched and they are all Unchecked.
I also agree that it is better to check them in order to increase the security of your system.
/rob

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Please read this whole message before doing anything.
I've tested these instructions only with the Safari web browser. If you use another browser, they may not work as described.
This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
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These steps are to be taken while booted in “normal” mode, not in safe mode. If you’re now running in safe mode, reboot as usual before continuing.
Below are instructions to enter some UNIX shell commands. The commands are harmless, but they must be entered exactly as given in order to work. If you have doubts about the safety of the procedure suggested here, search this site for other discussions in which it’s been followed without any report of ill effects.
Some of the commands will line-wrap or scroll in your browser, but each one is really just a single line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, and you can then copy it. The headings “Step 1” and so on are not part of the commands.
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☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
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