#houdini #linux When setting up **Houdini** with the SideFX License Server on Fedora, I ran into a problem where Houdini could not check out a license. The root cause was SELinux blocking the NIS (Network Information Service) calls that the license server relies on. There are two possible fixes: **Disable SELinux** completely (not recommended). ``` sudo setenforce 0 ``` **Enable NIS support in SELinux** (better and more secure). ``` sudo setsebool -P nis_enabled 1 ``` By enabling the NIS boolean, SELinux allows Houdini’s license server traffic without compromising overall system security. This is the preferred approach compared to disabling SELinux entirely.