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Old 10th January 2017, 07:56 AM
stevef9432203 Offline
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Join Date: Nov 2010
Location: los an
Posts: 9
dialout group does nothing with selinux enabled

How in the hell does being a member of the dialout group work when selinux breaks comm port access. Pissing meoff big time.
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Old 10th January 2017, 09:21 AM
flyingdutchman Offline
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Join Date: Jan 2015
Location: Al Ain, UAE
Posts: 723
Re: dialout group does nothing with selinux enabled

I wasn't aware that SELinux also messes with the serial ports.

The obvious solution is to turn SELinux off, but it may be better to read the manual and figure out how to configure it the right way.

So 'setenforce 0' will get you going, but the manual is here:


It looks like you'll have to faff around with 'chcon -t whatever' to figure it out.
Have fun!
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Old 11th January 2017, 11:56 AM
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SteveGYBE Offline
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Join Date: Jun 2007
Location: Lytham St Annes, Lancashire, UK
Posts: 687
Re: dialout group does nothing with selinux enabled

If you are using "pppd", there are a couple of SELinux booleans relating to the process you might want to try
# getsebool -a | grep pppd
pppd_can_insmod --> off
pppd_for_user --> off
The "pppd_for_user" boolean looks an obvious culprit. You can turn on just for the session, or use the "-P" flag to make the setting persistent across reboots
# setsebool [ -P ] pppd_for_user on

# getsebool pppd_for_user --> on
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dialout , enabled , group , selinux

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