Hi,
I'm trying to share an NFS mount point as Read-only using only SELinux, this is for learning purposes.
I'm running Centos but I didn't find a Centos Mailing List, this one was the closest I could find.
I'm on Centos 7 server 7.8.2003
I have run setsebool -P nfs_export_all_ro 1 and nfs_export_all_rw 0 and still, the NFS clients can write to the files of the Share.
I played with the public_content_t type but that made no difference on the files.
My share directory on NFS server:
[root@localhost primary]# ls -lahZ drwxr-xr-x. root root unconfined_u:object_r:usr_t:s0 . drwxr-xr-x. root root unconfined_u:object_r:usr_t:s0 .. -rw-r--r--. root root system_u:object_r:public_content_t:s0 file1 -rw-r--r--. root root unconfined_u:object_r:public_content_t:s0 file2 -rw-r--r--. root root system_u:object_r:public_content_t:s0 file3 -rw-r--r--. root root unconfined_u:object_r:public_content_t:s0 file4
Those with user system_u were created by NFS clients, the unconfined_u were created by root on the NFS server, still the NFS clients have write capabilities to all of them.
[root@localhost primary]# getsebool -a | grep nfs_export nfs_export_all_ro --> on nfs_export_all_rw --> off
[root@localhost primary]# getenforce Enforcing
Any ideas?
Thanks,