OK. just read up on what Molly-Guard is, and it is just a way to prevent the server being accidentely shut down remotely. There is a nice little story behind its definition:
What is Molly Guard?
A shield to prevent tripping of some Big Red Switch by clumsy or ignorant hands. Originally used of the plexiglass covers improvised for the BRS on an IBM 4341 after a programmer’s toddler daughter (named Molly) frobbed it twice in one day. Later generalised to covers over stop/reset switches on disk drives and networking equipment.
So by simply typing in: apt-get install molly-guard
this is the result:
Reading package lists… Done
Building dependency tree
Reading state information… Done
The following NEW packages will be installed
0 upgraded, 1 newly installed, 0 to remove and 3 not upgraded.
Need to get 6716B of archives.
After unpacking 81.9kB of additional disk space will be used.
Get: 1 http://gb.archive.ubuntu.com feisty/universe molly-guard 0.2.2-1 [6716B]
Fetched 6716B in 0s (52.6kB/s)
Selecting previously deselected package molly-guard.
(Reading database … 105840 files and directories currently installed.)
Unpacking molly-guard (from …/molly-guard_0.2.2-1_all.deb) …
Setting up molly-guard (0.2.2-1) …
So this is step one in the journey of a thousand miles of improving server security.