iptables -A INPUT -p tcp --syn --dport 80 -m connlimit --connlimit-above 3 -j REJECT --reject-with tcp-reset
iptables -L -v > /tmp/iptables_backup


tc -s qdisc ls dev eth0
tc qdisc del dev eth0 root
tc qdisc add dev eth0 root handle 1:0 htb default 10
tc class add dev eth0 parent 1:0 classid 1:10 htb rate 15kbps ceil 99999kbps prio 0
iptables -A OUTPUT -t mangle -p tcp --sport 80 -j MARK --set-mark 10
tc filter add dev eth0 parent 1:0 prio 0 protocol ip handle 10 fw flowid 1:10