I'm trying to get to the bottom of an issue with a non-root user running a cron job and I've stumbled upon /etc/security/access.conf. I have a couple of questions:

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• What service reads this file?
• Do I need to restart anything after editing it?
• How do I know it's even being used?

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Thanks

3 Answers

To see which PAM-based services are using it:

If it's not mentioned in /etc/pam.d/cron (which I suspect it won't be) then it shouldn't be having any effect on cron jobs. If there are any @include directives in the pam.d files, follow them to make sure you don't miss anything.

[1] What service reads this file?It is used by pam

[2] Do I need to restart anything after editing it?

Nothing to restart. Once changed, on subsequent login event, the file is read.

[3] How do I know it's even being used?

For more details, do man access.conf.

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The other two answers are very good, but miss something I wish I understood yesterday.

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Access.conf is indeed used by pam_access.so, but so what? You really need to know if pam_access.so is being used during login. Check for it here:

Here is the thing: Do not edit these files to add/remove pam_access.so. Other services may overwrite those changes. You have to dive into the dark arts of authentication to change these things... doing so without full understanding can lead to a burned tush.

But the others are correct: changes to access.conf are immediate, requiring no reboot nor service restart.

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