Hosts allow and deny
  Introduction


  This is the last line of defence against unwanted visitors for ser-
  vices which are started by tcpd through inetd. This is where it is
  possible to allow or deny connections based on the source of the
  requests.

  11..  SSeerrvveerr

  The name of the server is specified. It is possible to enter several
  servers. But only servers in the list are acceptable. These servers
  are started by tcpd through inetd.


  22..  CClliieenntt ssyysstteemmss

  Enter the names of clients which are allowed or denied. It is possible
  to enter several clients or enter the keywoard _A_L_L.


  33..  OOppttiioonnaall ccoommmmaanndd

  Any command can be executed when the filter is applied.