Don Dilanga's questions

当我在 SSH 中键入此命令以查看规则时，它会在 iptables 中返回以下警告消息。我想知道它是什么以及如何解决它。iptables -L

LOG        tcp  --  anywhere             anywhere             limit: avg 30/min burst 5 LOG level warning                                  prefix "Firewall: *TCP_IN Blocked* "
LOG        udp  --  anywhere             anywhere             limit: avg 30/min burst 5 LOG level warning                                  prefix "Firewall: *UDP_IN Blocked* "
LOG        icmp --  anywhere             anywhere             limit: avg 30/min burst 5 LOG level warning                                  prefix "Firewall: *ICMP_IN Blocked* "
DROP       all  --  anywhere             anywhere

Chain LOGDROPOUT (1 references)
target     prot opt source               destination
LOG        tcp  --  anywhere             anywhere             tcp flags:FIN,SYN,RST,ACK/SYN limit: avg 30/                                 min burst 5 LOG level warning uid prefix "Firewall: *TCP_OUT Blocked* "
LOG        udp  --  anywhere             anywhere             limit: avg 30/min burst 5 LOG level warning                                  uid prefix "Firewall: *UDP_OUT Blocked* "
LOG        icmp --  anywhere             anywhere             limit: avg 30/min burst 5 LOG level warning                                  uid prefix "Firewall: *ICMP_OUT Blocked* "
REJECT     all  --  anywhere             anywhere             reject-with icmp-port-unreachable

Chain PORTFLOOD (3 references)
target     prot opt source               destination
LOG        all  --  anywhere             anywhere             limit: avg 30/min burst 5 LOG level warning                                  prefix "Firewall: *Port Flood* "
DROP       all  --  anywhere             anywhere

在 nginx 中，geo 模块中有以下示例 http://nginx.org/en/docs/http/ngx_http_geo_module.html 我想知道这个 0、2、1、1 数字等是什么。在主要地址之后说明（值）。它们的用途是什么？

> geo $geo {
>     default        0;
> 
>     127.0.0.1      2;
>     192.168.1.0/24 1;
>     10.1.0.0/16    1;
> 
>     ::1            2;
>     2001:0db8::/32 1; 
>}