Linux下禁止别人ping
时间：2010-10-14 来源：jiangyao
以root进入Linux系统，然后编辑文件icmp_echo_ignore_all
vi /proc/sys/net/ipv4/icmp_echo_ignore_all
将其值改为1后为禁止PING
将其值改为0后为解除禁止PING
防止别人ping
[root@localhost yanu]# echo 1 >; /proc/sys/net/ipv4/icmp_echo_ignore_all
如果要恢复，只要：
[root@localhost yanu]# echo 0 >; /proc/sys/net/ipv4/icmp_echo_ignore_all
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