The access control language implements the following pat‐
· A string that begins with a `.´ character. A host name
is matched if the last components of its name match
the specified pattern. For example, the pattern
`.tue.nl´ matches the host name `wzv.win.tue.nl´.
· A string that ends with a `.´ character. A host
address is matched if its first numeric fields match
the given string. For example, the pattern `131.155.´
matches the address of (almost) every host on the
Eindhoven University network (131.155.x.x).