甚至还有一些讲究「降本增效」的防窥膜，只蚀刻纵向光栅，导致只能左右防窥、上下或者斜视看过去依然是一览无余的：
Network egress control — compute isolation means nothing if the sandbox can freely phone home. Options range from disabling networking entirely, to running an allowlist proxy (like Squid) that blocks DNS resolution inside the sandbox and forces all traffic through a domain-level allowlist, to dropping CAP_NET_RAW so the sandbox cannot bypass DNS with raw sockets.，推荐阅读服务器推荐获取更多信息
，这一点在快连下载安装中也有详细论述
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[3] T. Knoll: “Pattern Dithering” (1999). US Patent No. 6,606,166. ↑。关于这个话题，体育直播提供了深入分析