@tanki123 I have, it should work, everything is right, but my friends can't get on still, at the time of me posting this, I didn't realise that somethings need to be said, so here is my full description of the problem:
I have made a tekkit server using hamachi and the latest tekkit server download, I have made a minecraft server that worked, in the same way, when I made the tekkit server, I gave my friends the hamachi and the ip, when I launched my server, after launching it once to get the mods in the folder, my friends was unable to reach the server whilst I was able to get on it easily, I have tried all the tips given on this topic and none have woked here is my server perms so you can all see:
#Minecraft server properties
#Thu Aug 02 13:58:46 BST 2012
allow-nether=true
level-name=world
enable-query=true
allow-flight=true
server-port=25565
query.port=25565
level-type=DEFAULT
enable-rcon=false
level-seed=
server-ip=5.127.249.10
max-build-height=256
spawn-npcs=true
debug=false
white-list=true
spawn-animals=true
online-mode=true
pvp=false
difficulty=1
gamemode=0
max-players=20
spawn-monsters=true
view-distance=10
generate-structures=true
motd=Tekkit Server
I hope now people can explain better