文章摘要
这篇文章展示了使用iptables过滤器的配置内容，主要输出包括INPUT、FORWARD和OUTPUT链表的详细信息。(INPUT链表接纳2033个ICMP包，FORWARD链表无流量控制，OUTPUT链表接纳2072个数据包)。文章重点描述了每条链表的流量控制策略，包括允许的流量数量、目标协议以及源IP地址范围等细节。
[root@jxl-1 ~]# iptables -L -n -v –line-number
Chain INPUT (policy ACCEPT 2033 packets, 2002K bytes)
num pkts bytes target prot opt in out source destination
1 0 0 DROP icmp — * * 0.0.0.0/0 0.0.0.0/0 source IP range 192.168.20.10-192.168.20.19
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
num pkts bytes target prot opt in out source destination
Chain OUTPUT (policy ACCEPT 2072 packets, 3079K bytes)
num pkts bytes target prot opt in out source destination
Chain INPUT (policy ACCEPT 2033 packets, 2002K bytes)
num pkts bytes target prot opt in out source destination
1 0 0 DROP icmp — * * 0.0.0.0/0 0.0.0.0/0 source IP range 192.168.20.10-192.168.20.19
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
num pkts bytes target prot opt in out source destination
Chain OUTPUT (policy ACCEPT 2072 packets, 3079K bytes)
num pkts bytes target prot opt in out source destination
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