admin管理员组

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1、添加进和出的规则

firewall-cmd --permanent --direct --add-rule ipv4 filter INPUT 0 -p ICMP --icmp-type timestamp-request -m comment --comment "deny ICMP timestamp" -j DROP

firewall-cmd --permanent --direct --add-rule ipv4 filter OUTPUT 0 -p ICMP --icmp-type timestamp-request -m comment --comment "deny ICMP timestamp" -j DROP

firewall-cmd --permanent --direct --add-rule ipv4 filter INPUT 0 -p ICMP --icmp-type timestamp-reply -m comment --comment "deny ICMP timestamp" -j DROP

firewall-cmd --permanent --direct --add-rule ipv4 filter OUTPUT 0 -p ICMP --icmp-type timestamp-reply -m comment --comment "deny ICMP timestamp" -j DROP

以上包括了进和出的规则

只是封进的规则可以只填两条

firewall-cmd --permanent --direct --add-rule ipv4 filter INPUT 0 -p ICMP --icmp-type timestamp-request -m comment --comment "deny ICMP timestamp" -j DROP

firewall-cmd --permanent --direct --add-rule ipv4 filter INPUT 0 -p ICMP --icmp-type timestamp-reply -m comment --comment "deny ICMP timestamp" -j DROP

2.防火墙重启载入规则

firewall-cmd --reload

systemctl restart firewalld

3.查看防火墙规则

firewall-cmd --direct --get-all-rules

本文标签: 漏洞LinuxICMPtimestamp