0.0.0.0/0 (representing all IPV4) and ::/0 (representing all IPV6) and inbound rules and outbound rules

0.0.0.0/0 (represents all IPV4)

::/0 (represents all IPV6)

Inbound rules (external access to the server)

Outbound rules (server access outside)

Tencent Cloud

Inbound rules, open all IPV4 by default, and prohibit all IPV6

Change it to refuse by itself, and then open the required port by itself

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Outbound rules allow all by default

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Origin blog.csdn.net/weixin_44371237/article/details/114277205