Fixed several typos, added explanation for netstat output
cleaned up section with editing the /etc/hosts file
specified hosts that need nfs-utils, and cleaned up 'mkdir' section
Added a check iptables command to confirm that changes have been made
added excercise to fix showmount port
Changed Lab3 to only be an NFS lab
Changed method of checking mounts to use 'mount' and 'df'
Changed shell prompt to a single universal one
Changed perms on shares to a group, added section on adding users to a group
added chkconfig section