Enable autofs on Fedora

# yum whatprovides autofs
Loaded plugins: langpacks, presto, refresh-packagekit
1:autofs-5.0.6-13.fc17.x86_64 : A tool for automatically ....
                              : filesystems
Repo        : fedora

# yum install autofs-5.0.6-13.fc17.x86_64

If needed modify /etc/auto.master:
# vi /etc/auto.master
     /net   -hosts

# service autofs start