我在函数计算里面还是连不上公司自建的mssql数据库，自建数据库的服务器端口全开放也没有开防火墙，网络是通的可以调服务器上的接口，有大佬知道还有什么因素影响吗，我自己的测试服务器自建数据库又可以连。就是连数据库做读写操作，连不上数据库，我自己的服务器上的数据库就可以连不知道是不是数据库版本的原因，没有收到请求，收到请求不会是这个报错

问答 2022-04-15 来自：开发者社区

外网无法访问服务器的所有端口，安全组都配置好了，防火墙全都关了，还是不能访问

外网无法访问服务器的所有端口，安全组都配置好了，防火墙全都关了，还是不能访问具体见我另外一个问题：https://yq.aliyun.com/ask/53275?spm=0.0.0.0.fG9Od8&msgid=292443#comment-7949-answer-info

文章 2022-02-17 来自：开发者社区

阿里云轻量应用服务器开放端口是在防火墙中设置的，云服务器ECS是在安全组中开放端口，例如80端口、8888端口等都是在防火墙中开启的，阿里云轻量服务器网来详细说下轻量应用服务器开通端口方法：阿里云轻量服务器端口开通教程阿里云轻量应用服务器端口开放是在防火墙设置的，例如开通80端口、443端口、8888端口、3306端口等都是在防火墙中设置的，阿里云轻量服务器网图文详解开放端口教程：登录到阿里云轻....

问答 2022-02-15 来自：开发者社区

TCP中客户端设置要发送到的服务器端口，需要在哪里打开对应端口的防火墙？

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更新时间 2024-06-18 12:56:18

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云服务器 ECS（Elastic Compute Service）是一种弹性可伸缩的计算服务，助您降低 IT 成本，提升运维效率，使您更专注于核心业务创新。

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