| 1. | Network traffic is made up of ip packets or simply
网络流量由ip信息包（或，简称 |
| 2. | Drop ped , instead of just killing them
掉的入站信息包，而不是简单地杀死它们。 |
| 3. | Rules dealing with outgoing packets are added to the
处理出站信息包的规则被添加到 |
| 4. | Rules dealing with incoming packets are added to the
处理入站信息包的规则被添加到 |
| 5. | Chain that specifies packets destined for port 80 to be
前往端口80的信息包。 |
| 6. | A packet can also be blocked and killed using target
允许该信息包通过。还可以使用目标 |
| 7. | That means all the packets not matching any rule in the
链中任何规则都不匹配的信息包。 |
| 8. | Sends back an error message to the sender of the packet
将错误消息发回给信息包的发送方。 |
| 9. | Sending a packet to all destinations simultaneously
同时向所有接收站发送信息包的通讯方式。 |
