Recently, I had to set up Samba on a new CentOS 5 system. Samba is used to provide Windows file sharing from non-Windows systems and can be quite a pain to set up. Red Hat, from whom CentOS is derived, has included a default configuration that works pretty well out of the box for what most people use Samba for: sharing home directories.
So, I fired it up and found that I could browse the shares on the server from my Windows XP system, but got the following message when I tried to open one of them (Iris is the name of the file server.):
Iris is not accessible. You might not have permission to use this network resource. Access is denied.
After beating up Google a bit, I decided to actually journey into the smb.conf file again and noticed that Red Hat had left a comment about SELinux.
Viola! Typing the following solved my problem:
/usr/sbin/setsebool -P samba_enable_home_dirs on