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Mention that /etc/apt/sources.list.d/* should be 644 (#138)

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* Update Desktop Linux Hardening.md

Signed-off-by: Tommy <contact@tommytran.io>
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Tommy 2023-06-30 03:32:49 -07:00 committed by GitHub
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content/posts/linux/Desktop Linux Hardening.md
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@ -180,6 +180,8 @@ Another option is [Kata Containers](https://katacontainers.io/) which masquerade
On distributions besides openSUSE, consider changing the default [umask](https://wiki.archlinux.org/title/Umask) for both root and regular users to `077` (symbolically, `u=rwx,g=,o=`). _On openSUSE, a umask of 077 can break snapper and is thus not recommended._ On distributions besides openSUSE, consider changing the default [umask](https://wiki.archlinux.org/title/Umask) for both root and regular users to `077` (symbolically, `u=rwx,g=,o=`). _On openSUSE, a umask of 077 can break snapper and is thus not recommended._
On Ubuntu, the "Software & Update" application will not work properly if the repository lists in `/etc/apt/sources.list.d` have the 600 permission. You should make sure that they have the 644 permission instead.
The configuration for this varies per distribution, but typically it can be set in `/etc/profile`, `/etc/bashrc`, or `/etc/login.defs`. The configuration for this varies per distribution, but typically it can be set in `/etc/profile`, `/etc/bashrc`, or `/etc/login.defs`.
Note that, unlike on macOS, this will only change the umask for the shell. Files created by running applications will not have their permissions set to 600. Note that, unlike on macOS, this will only change the umask for the shell. Files created by running applications will not have their permissions set to 600.