下面是我的防火墙的记录,请帮我分析一下含义.我该采取什么措施?
万分感谢!
2006-07-09 05:04:46, 系统禁止接收ICMP数据包；地址为：218.11.0.23 <= 221.210.248.110 Code=0, Type=8 ；满足规则：禁止Ping入
2006-07-09 04:50:26, 系统禁止接收ICMP数据包；地址为：218.11.0.23 <= 130.156.23.193 Code=0, Type=8 ；满足规则：禁止Ping入
2006-07-09 04:12:44, 系统禁止接收ICMP数据包；地址为：218.11.0.23 <= 61.224.205.229 Code=0, Type=8 ；满足规则：禁止Ping入
2006-07-09 03:34:29, 系统禁止接收ICMP数据包；地址为：218.11.0.23 <= 58.120.73.247 Code=0, Type=8 ；满足规则：禁止Ping入
2006-07-09 03:27:00, 系统禁止接收ICMP数据包；地址为：218.11.0.23 <= 221.210.248.110 Code=0, Type=8 ；满足规则：禁止Ping入
2006-07-09 02:29:57, 系统允许接收ICMP数据包；地址为：218.11.0.23 <= 61.152.100.243 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-09 02:29:57, 系统允许接收ICMP数据包；地址为：218.11.0.23 <= 61.152.100.243 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-09 02:29:57, 系统允许接收ICMP数据包；地址为：218.11.0.23 <= 61.152.100.243 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-09 02:29:57, 系统允许接收ICMP数据包；地址为：218.11.0.23 <= 61.152.100.243 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-09 02:29:57, 系统允许接收ICMP数据包；地址为：218.11.0.23 <= 61.152.100.235 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-09 02:29:57, 系统允许接收ICMP数据包；地址为：218.11.0.23 <= 61.152.100.235 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-09 02:29:57, 系统允许接收ICMP数据包；地址为：218.11.0.23 <= 61.152.100.233 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-09 02:29:57, 系统允许接收ICMP数据包；地址为：218.11.0.23 <= 61.152.100.233 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-09 02:29:57, 系统允许接收ICMP数据包；地址为：218.11.0.23 <= 61.152.100.233 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-08 23:13:28, 系统允许发送ICMP数据包；地址为：218.11.20.129 => 218.12.36.83 Code=0, Type=8 ；满足规则：允许Ping出
2006-07-08 23:13:25, 系统允许发送ICMP数据包；地址为：218.11.20.129 => 218.12.36.83 Code=0, Type=8 ；满足规则：允许Ping出
2006-07-08 23:13:23, 系统允许发送ICMP数据包；地址为：218.11.20.129 => 218.12.36.83 Code=0, Type=8 ；满足规则：允许Ping出
2006-07-08 23:13:21, 系统允许发送ICMP数据包；地址为：218.11.20.129 => 218.12.36.83 Code=0, Type=8 ；满足规则：允许Ping出
2006-07-08 22:17:54, 系统禁止接收ICMP数据包；地址为：218.11.20.129 <= 61.58.165.21 Code=0, Type=8 ；满足规则：禁止Ping入
2006-07-08 21:54:54, 系统禁止接收ICMP数据包；地址为：218.11.20.129 <= 218.247.153.44 Code=0, Type=8 ；满足规则：禁止Ping入
2006-07-08 18:19:20, 系统允许接收ICMP数据包；地址为：61.55.7.120 <= 61.152.100.235 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-08 18:19:20, 系统允许接收ICMP数据包；地址为：61.55.7.120 <= 61.152.100.235 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-08 18:19:20, 系统允许接收ICMP数据包；地址为：61.55.7.120 <= 61.152.100.252 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-08 18:19:20, 系统允许接收ICMP数据包；地址为：61.55.7.120 <= 61.152.100.252 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-08 18:19:20, 系统允许接收ICMP数据包；地址为：61.55.7.120 <= 61.152.100.252 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-08 18:19:20, 系统允许接收ICMP数据包；地址为：61.55.7.120 <= 61.152.100.252 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-08 18:19:20, 系统允许接收ICMP数据包；地址为：61.55.7.120 <= 61.152.100.233 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-08 18:19:20, 系统允许接收ICMP数据包；地址为：61.55.7.120 <= 61.152.100.233 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-08 18:19:20, 系统允许接收ICMP数据包；地址为：61.55.7.120 <= 61.152.100.233 Code=0, Type=0 ；满足规则：允许Ping出
2006-07-08 18:19:20, 系统允许接收ICMP数据包；地址为：61.55.7.120 <= 61.152.100.233 Code=0, Type=0 ；满足规则：允许Ping出
