No other can connect in my server but i can

My Question is: I play yesterday with my friends minecraft but today we don't can play on my server i can connect to my server but my friends don't can connect can one help me ??



Sorry for my bad english i'm from german

 

Have you set up a port-forward in your router?
Has your ip changed?
What about you internal ip on the home network(they happens to change a lot :S ) has it changed?
Is port 25565 open in your firewall, both router and computer?

 

Im having the same problem and and i checked all of those

 

How do you set up a port-forward?

@JacobSchwartz

 

That's actually not that hard, though many people think it is
You just go to http://portforward.com/ and find your router on the list.
After this you will get an advertisement, just skip it with the link in the upper right corner.
Then you will get a list of programs/games to portforward for, choose minecraft server, and there you go, a step by step guide on how to portforward with your router

Maybe your internet provider is blocking the port, try and contact them to see if this is the case

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

@JacobSchwartz

how do you make sure its open in your firewall?

 

http://windows.microsoft.com/en-US/windows7/Open-a-port-in-Windows-Firewall

 

This is most likely due to not having a static IP on your LAN. I would suggest following a guide to set one up, if you're going to be running a server. The first one to pop up is http://portforward.com/networking/static-win7.htm
Follow it if you like. I highly recommend it. Just make sure you follow every step very carefully, as you don't want to mess anything up.