Что делает параметр RATEEST в IpTables? может кто знает?
Вот нашел статейку, если кто поймет по инглиш - объясните мне плиз.:
rateest
The rate estimator can match on estimated rates as collected by the
RATEEST target. It supports matching on absolute bps/pps values, com-
paring two rate estimators and matching on the difference between two
rate estimators.
--rateest1 name
Name of the first rate estimator.
--rateest2 name
Name of the second rate estimator (if difference is to be calcu-
lated).
--rateest-delta
Compare difference(s) to given rate(s)
--rateest1-bps value
--rateest2-bps value
Compare bytes per second.
--rateest1-pps value
--rateest2-pps value
Compare packets per second.
[!] --rateest-lt
Match if rate is less than given rate/estimator.
[!] --rateest-gt
Match if rate is greater than given rate/estimator.
[!] --rateest-eq
Match if rate is equal to given rate/estimator.
Example: This is what can be used to route outgoing data connections
from an FTP server over two lines based on the available bandwidth at
the time the data connection was started:
# Estimate outgoing rates
iptables -t mangle -A POSTROUTING -o eth0 -j RATEEST --rateest-name
eth0 --rateest-interval 250ms --rateest-ewma 0.5s
iptables -t mangle -A POSTROUTING -o ppp0 -j RATEEST --rateest-name
ppp0 --rateest-interval 250ms --rateest-ewma 0.5s
# Mark based on available bandwidth
iptables -t mangle -A balance -m conntrack --ctstate NEW -m helper
--helper ftp -m rateest --rateest-delta --rateest1 eth0 --rateest-bps1
2.5mbit --rateest-gt --rateest2 ppp0 --rateest-bps2 2mbit -j CONNMARK
--set-mark 1
iptables -t mangle -A balance -m conntrack --ctstate NEW -m helper
--helper ftp -m rateest --rateest-delta --rateest1 ppp0 --rateest-bps1
2mbit --rateest-gt --rateest2 eth0 --rateest-bps2 2.5mbit -j CONNMARK
--set-mark 2
iptables -t mangle -A balance -j CONNMARK --restore-mark