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table inet filter {
limit tarpit-pps {
rate 1/second
}
limit tarpit-bps {
rate 1 kbytes/second
}
limit http-bulk-rl-1m {
rate 1 mbytes/second
}
limit http-bulk-rl-10m {
rate 10 mbytes/second
}
set tarpit4 {
typeof ip saddr
size 10000
flags dynamic,timeout
timeout 1m
}
set tarpit6 {
typeof ip6 saddr
size 10000
flags dynamic,timeout
timeout 1m
}
map addr4limit {
typeof meta l4proto . ip saddr . tcp sport : limit
flags interval
elements = { tcp . 192.168.0.0/16 . 1-65535 : "tarpit-bps",
udp . 192.168.0.0/16 . 1-65535 : "tarpit-pps",
tcp . 127.0.0.1-127.1.2.3 . 1-1024 : "tarpit-pps",
tcp . 10.0.0.1-10.0.0.255 . 80 : "http-bulk-rl-1m",
tcp . 10.0.0.1-10.0.0.255 . 443 : "http-bulk-rl-1m",
tcp . 10.0.1.0/24 . 1024-65535 : "http-bulk-rl-10m",
tcp . 10.0.2.1 . 22 : "http-bulk-rl-10m" }
}
map saddr6limit {
typeof ip6 saddr : limit
flags interval
elements = { dead::beef-dead::1:aced : "tarpit-pps" }
}
chain input {
type filter hook input priority filter; policy accept;
limit name meta l4proto . ip saddr . th sport map @addr4limit
limit name ip6 saddr map @saddr6limit
}
}
|
