Re: Restore pristine SELinux configuration ?

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Am 19.01.21 um 17:25 schrieb Nicolas Kovacs:
Hi,

I have CentOS 7 running on a public server hosting all sorts of web
applications, mail, XMPP, MPD, etc.

How do I reset SELinux configuration to defaults?

I know how to reset all my custom booleans to the initial state.

   # cat /etc/selinux/targeted/active/booleans.local
   # This file is auto-generated by libsemanage
   # Do not edit directly.

   httpd_unified=1
   httpd_can_sendmail=1
   spamd_enable_home_dirs=1
   httpd_can_network_connect=1
   ftpd_full_access=1
   mpd_enable_homedirs=1
   named_write_master_zones=1

Starting from there, I can manually reset them to 0 with setsebool.

On the other hand, I don't know how I would do something similar with the
SELinux modules. I vaguely remember having created some of these, for example
for Fail2ban to work correctly. But I don't remember what I did here over the
years, what modules I created, etc.

How would I recreate the default SELinux configuration without having to wipe
and reinstall the whole server?

list your modules with

semodule -l

and remove custom modules with

semodule -r myfail2ban

--
Leon

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