linux系统禁ping
1、查看当前状态
1 cat /proc/sys/net/ipv4/icmp_echo_ignore_all
#返回值:0代表允许ping,1代表禁ping
2、临时方法
1 echo 1 >/proc/sys/net/ipv4/icmp_echo_ignore_all
3、永久禁ping
1 echo 1 >/proc/sys/net/ipv4/icmp_echo_ignore_all 2 echo 'net.ipv4.icmp_echo_ignore_all=1' >>/etc/sysctl.conf 3 sysctl -p