My server is under attack

[Pietia]

what i can do to improve such attacks ? i have blocked icmp packets but this not helps :< if u want to see my ip 91.121.87.90
linux using iptables.
Transfers
Actually

In: 99.2 Mb/s
Out: 25.7 kb/s

 

[Pietia]

any1 can help me ?

 

[christiandb]

peerguardian

 

[Pietia]

it's for windows right ?im need for linux

 

[Doonrak]

max connections per ip

 

[Pietia]

so how to do it man ?:>