# 16 Issues with SELinux

Socket-based inter-process communication has been added since Zabbix
3.4. On systems where SELinux is enabled it may be required to add
SELinux rules to allow Zabbix create/use UNIX domain sockets in the
`SocketDir` directory. Currently socket files are used by server
(alerter, preprocessing, IPMI) and proxy (IPMI). Socket files are
persistent, meaning are present while the process is running.