在大陆,因为长城防火墙的,一大堆网站被屏蔽。有一个项目gfwlist,用来记录这些被屏蔽的网站。流行的翻墙方法是将gfwlist转换到 .pac文件,结合shadowsocks用于自动代理。对于个人或小型网络来说,手动在opnsense的web proxy中添加常用的网站,配合shadowsocks就可以达到翻墙的目的。但对与大型的网络来说,手动添加有数千个网站的gfwlist有些困难。translate by google:In the mainland, because of the Great Firewall(GFW), a lot of websites were blocked. There is a project GFWlist to record these blocked websites. the popular way to flip the wall is to convert the gfwlist to a .pac file, combined with shadowsocks for automatic proxies.For personal or small networks, manually add common websites to opnsense's web proxy, and with shadowsocks you can achieve the purpose of overturning the wall.But for large networks, manually adding gfwlists with thousands of websites is a bit difficult.