linux - 使用ufw 来开启本地端口（对于一些严格的提供商，默认只有22端口的，例如)

使用ufw

ufw status: 列出 来

ufw allow 80  开启80端口

root@vultr:/usr/local/openresty/nginx# ufw status
Status: active

To                         Action      From
--                         ------      ----
22/tcp                     ALLOW       Anywhere
80                         ALLOW       Anywhere
22/tcp (v6)                ALLOW       Anywhere (v6)
80 (v6)                    ALLOW       Anywhere (v6)

root@vultr:/usr/local/openresty/nginx# ufw allow 443
Rule added
Rule added (v6)
root@vultr:/usr/local/openresty/nginx# ufw status
Status: active

To                         Action      From
--                         ------      ----
22/tcp                     ALLOW       Anywhere
80                         ALLOW       Anywhere
443                        ALLOW       Anywhere
22/tcp (v6)                ALLOW       Anywhere (v6)
80 (v6)                    ALLOW       Anywhere (v6)
443 (v6)                   ALLOW       Anywhere (v6)