When using a SOCKS proxy in Firefox, enabling ‘Proxy DNS when using SOCKS v5’ under Network Settings can help resolve some network issues. Without this option enabled, Firefox may fail to connect to sites like google.com when accessed from mainland China, likely due to DNS pollution.

在Firefox里配置SOCKS代理时,记得钩上“使用SOCKS v5时代理DNS查询”。否则,Firefox在访问google.com等网站时很有可能失败, 特别是从中国大陆访问这些站点时。

Proxy DNS when using SOCKS v5