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Linux服务器安全防护

禁止ping centos服务器 ip地址

两条命令搞定，主要是下面第一条

echo 'net.ipv4.icmp_echo_ignore_all = 1' >>/etc/sysctl.conf

sysctl -p

[root@localhost ~]# cat /etc/sysctl.confnet.ipv6.conf.all.disable_ipv6=0net.ipv6.conf.default.disable_ipv6=0net.ipv6.conf.lo.disable_ipv6=0kernel.printk = 5[root@localhost ~]# [root@localhost ~]# echo 'net.ipv4.icmp_echo_ignore_all = 1' >>/etc/sysctl.conf[root@localhost ~]# [root@localhost ~]# sysctl -pnet.ipv6.conf.all.disable_ipv6 = 0net.ipv6.conf.default.disable_ipv6 = 0net.ipv6.conf.lo.disable_ipv6 = 0kernel.printk = 5net.ipv4.icmp_echo_ignore_all = 1[root@localhost ~]#[root@localhost ~]# cat sysctl.confnet.ipv6.conf.all.disable_ipv6=0net.ipv6.conf.default.disable_ipv6=0net.ipv6.conf.lo.disable_ipv6=0kernel.printk = 5net.ipv4.icmp_echo_ignore_all = 1[root@localhost ~]#

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