Systemd/Hardening/ru: Difference between revisions
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Created page with "Опции служб Systemd по умолчанию довольно слабые по защищённости, поэтому часто бывает желательно рассмотреть способы усиления безопасности служб Systemd." |
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Опции служб Systemd по умолчанию довольно слабые по защищённости, поэтому часто бывает желательно рассмотреть способы усиления безопасности служб Systemd. | |||
Systemd | |||
<div lang="en" dir="ltr" class="mw-content-ltr"> | <div lang="en" dir="ltr" class="mw-content-ltr"> | ||
A good way to get started on a given service is to look at the output of the command <code>systemd-analyze security myService</code>. From there, you can look at the documentation for the options you see in the output, often in <code>man systemd.exec</code> or <code>man systemd.resource-control</code>, and set the appropriate options for your service. | A good way to get started on a given service is to look at the output of the command <code>systemd-analyze security myService</code>. From there, you can look at the documentation for the options you see in the output, often in <code>man systemd.exec</code> or <code>man systemd.resource-control</code>, and set the appropriate options for your service. | ||
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While hardening a service, it often happens that you want a shell inside a hardened systemd unit, for exemple to check access to files, or check the network connectivity. One way to do this is to use tmux to create a session inside the service, and attaching to it outside of the service. | While hardening a service, it often happens that you want a shell inside a hardened systemd unit, for exemple to check access to files, or check the network connectivity. One way to do this is to use tmux to create a session inside the service, and attaching to it outside of the service. | ||
</div> | </div> | ||
Простой пример: | |||
<syntaxhighlight lang="nix"> | <syntaxhighlight lang="nix"> | ||
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Example with a <code>RootDirectory</code> specified: | Example with a <code>RootDirectory</code> specified: | ||
</div> | </div> | ||
<syntaxhighlight lang="nix"> | <syntaxhighlight lang="nix"> | ||
{ pkgs }: | { pkgs }: | ||
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ExecStop = "${pkgs.tmux}/bin/tmux -S /run/myService/tmux.socket kill-session -t my-session"; | ExecStop = "${pkgs.tmux}/bin/tmux -S /run/myService/tmux.socket kill-session -t my-session"; | ||
Type = "forking"; | Type = "forking"; | ||
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</div> | </div> | ||
BindReadOnlyPaths = [ | |||
BindReadOnlyPaths = [ | |||
"/nix/store" | "/nix/store" | ||
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