[kbartek]

Oh, sorry for the misunderstanding. I cannot do iptables on the VPS as I do not have access to any terminal on there, it's a gameserver and I have access to the control panel (Multicraft). Don't know why I should do iptables on the VPS (I think you want me to run iptables on the VPS? I think "remote system" is reffering to the VPS) because I can access the FTP if I change ISPs (I tried connecting on my friend's laptop and it worked, but when I try to connect on my phone/computer/laptop it just doesn't work.)