So, since many people wonders, why is server offline for so long time, i decided to make some sense, so, people would know what happens.
Currently i'm waiting for hoster to provide a Linux machine on the local network with the actual server, which will be used as a gateway. Here is a little schema, from which you can understand it more clear.
Actually i failed @ pic, that's with "arrows", haha, but it makes more sense.
All the requests from WAN will be forwarded to the linux machine, which will forward them to actual server through iptables, and DDoS deflate on it. Also, it will allow to log all requests from the clients.
I don't want to take server down in future, so, i'm doing all at once.