Post #5853
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一个 DNS 服务的官方镜像有 355MB、约 7500 个文件,因为里面装了整套 Linux 系统。有人把它静态编译后塞进空白镜像,再锁死进程能读写的文件和端口,最后只剩 36MB、两个文件,就算被攻破也翻不出一件可用的工具。过程看着挺过瘾,步骤也能照搬。https://www.grepular.com/Hardening_Container_Images
grepular.com Hardening Container Images I recently set up a new server using Flatcar Container Linux. I decided that any container that I put on this system should be "hardened" from the start....