!Help! Players can't join.

Hello here is what i did. *i'm on a mac*
> Desktop 'create new folder'
> Drag and Drop the Bukkit.jar file into it.
> open textedit like notepad for windows pasted this:
#!/bin/bash
cd "$(dirname "$0")"
exec java -Xmx1G -Xms1G -jar craftbukkit.jar
> Then went to fomat plain text
> then saved it as 'start.command' to my desktop.
> Then drag and dropped into my server file.
> then opened terminal and put this into it:
> chmod a+x (space) and the drag and dropped my start.command into terminal.
> then i started the server server started just mine for me and i can join just fine but my friends can't.
**************************************SERVER INFO*******************************************
*SERVER LOG*
2012-07-25 19:42:21 [INFO] Starting minecraft server version 1.2.5
2012-07-25 19:42:21 [INFO] Loading properties
2012-07-25 19:42:21 [WARNING] server.properties does not exist
2012-07-25 19:42:21 [INFO] Generating new properties file
2012-07-25 19:42:21 [INFO] Starting Minecraft server on *:25565
2012-07-25 19:42:21 [INFO] This server is running CraftBukkit version git-Bukkit-1.2.5-R4.0-b2222jnks (MC: 1.2.5) (Implementing API version 1.2.5-R4.0)
*SERVER PROPERTIES*
#Minecraft server properties
#Wed Jul 25 19:46:29 MDT 2012
allow-nether=true
level-name=world
enable-query=false
allow-flight=false
server-port=25565
level-type=DEFAULT
enable-rcon=false
level-seed=
server-ip=
max-build-height=256
spawn-npcs=true
white-list=false
spawn-animals=true
online-mode=true
pvp=true
difficulty=1
server-name=Unknown Server
gamemode=0
max-players=20
spawn-monsters=true
view-distance=10
generate-structures=true
motd=A Minecraft Server
*SERVER PLUGINS*
NONE
Thanks if you posted anything could help. THANKS!!!

 

Triplicate thread
http://forums.bukkit.org/threads/he...message-cant-reach-server.88461/#post-1233935
http://forums.bukkit.org/threads/help-friends-cant-join-but-i-can.88489/#post-1234157