My dedicated server went down.. and i am unable to access ssh.. So now what i do? I need wait untill ddos is finish? or what If you have kvm access then you can just disable the http server to setup some ddos protection or ask your dc to see if they have a hardware firewall with ddos protection. Or using your cmd/terminal on your local pc start a continuous small byte ping to your server ip in 3-4 different windows so you can hijack a couple of connection ports to your server. Then try to ssh, It maybe slow, but you will get access.