抗CC攻击 几大规则:
1.before the bad visitors go to your neck, kill them
2.it's not necessary to waste the resource for bad visitors
3.say nothing to the bad visitors
4.kill the port which not need public access
5.be careful to the cdn
6.build a NGINX server
7.software firewall is not fine
8.find the bad visitors' common feature to ban them if necessary
9.iptables is your best comrade at the war
10.do not harm your fine visitors.