Limit=30
Burst=10
iptables -t nat -A POSTROUTING  -m limit --limit $Limit/h --limit-burst $Burst -j NFLOG --nflog-group 0 --nflog-prefix  NAT_POSTROUTING
iptables -t nat -A PREROUTING  -m limit --limit $Limit/h --limit-burst $Burst -j NFLOG --nflog-group 0 --nflog-prefix  NAT_PREROUTING
iptables -t nat -A INPUT  -m limit --limit $Limit/h --limit-burst $Burst -j NFLOG --nflog-group 0 --nflog-prefix NAT_INPUT
iptables -t nat -A OUTPUT -m limit --limit $Limit/h --limit-burst $Burst -j NFLOG --nflog-group 0 --nflog-prefix  "NAT_OUTPUT