My Minecraft Server is running perfectly and I can connect. But, if others try, it says "Can't connect: connection refused: connect".  I have a Mac, with 8GB RAM and am using Rcon. I connect using localhost. I can't even connect with telnet!
Similar to  on the bugs in Minecraft, I would like a complete list of what error codes exist in Minecraft and how they occur, as well as how they can be resolved.
I want to package my project in a single executable JAR for distribution.  How can I make a Maven project package all dependency JARs into my output JAR? Locking a file in Python What does "preceding" mean in Oracle? How to enable root login? What's the difference between iterating over a file with foreach or while in Perl? Can the activity dropdown say more than just "+2 tag wiki"? What is the difference between an SLR and a DSLR? What are the differences between SLRs and DSLRs? (I know that DSLRs are Digital SLRs but are there any actual differences?)  Also, what are the advantages/disadvantages of both? If I'm floating in space and I turn on a flashlight, will I accelerate? What is the difference between CentOS "DVD" vs "Everything" ISOs Local collection of Python packages: best way to import them? Irrationality of sum of two logarithms: $\log_2 5 +\log_3 5$ I try to prove that the number $$\log_2 5 +\log_3 5$$ is irrational. But I have no idea how to do it. Any hints are welcome. 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I know about "armoring" the numbers with quotes, too, but the files I get don't come like that and I was hoping to avoid having to pre-process the files so Excel doesn't screw them up.  Is there a way to do specifically this: Always format all columns in opened CSV files as text, without manually selecting each column every time during import?  I'm using Excel 2003, but I'll take answers for 2007 if that's what you know. Why is the well ordering principle counter-intuitive? I read  that while 'The Axiom of Choice agrees with the intuition of most mathematicians; the Well Ordering Principle is contrary to the intuition of most mathematicians'. I don't understand why this is so. According to Wikipedia, 'the well-ordering principle states that every non-empty set of positive integers contains a least element'. This is quite a straightforward definition. 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