HOSTS.NNTP man page on 4.4BSD

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       hosts.nntp, hosts.nntp.nolimit - list of hosts that feed NNTP news

       The  file /var/spool/news/data/hosts.nntp is read by innd(8) to get the
       list of hosts that feed the local site Usenet news using the NNTP  pro‐
       tocol.	The  server reads this file at start-up or when directed to by
       ctlinnd(8).  When a hosts connects to the NNTP port of  the  system  on
       which  innd  is	running,  the  server  will do a check to see if their
       Internet address is the same as one of the hosts named  in  this	 file.
       If  the	host  is  not  mentioned,  then innd will spawn an nnrpd(8) to
       process the connection, with the accepted connection on standard	 input
       and standard output.

       Comments	 begin with a number sign (``#'') and continue through the end
       of the line.  Blank lines and comments also ignored.  All  other	 lines
       should consist of two or three fields separated by a colon.

       The  first  field  should  be either an Internet address in dotted-quad
       format or an address that can be	 parsed	 by  gethostbyname(3).	 If  a
       host's  entry  has multiple addresses, all of them will be added to the
       access list.  The second field, which may be blank, is the password the
       foreign	host  is  required  to	use  when first connecting.  The third
       field, which may be omitted, is a list of newsgroups to which the  host
       may  post articles.  This list is parsed as a newsfeeds(5) subscription
       list; groups not in the list are ignored.

       Since innd is usually started at system boot time, the local nameserver
       may  not	 be  fully operational when innd parses this file.  As a work-
       around, a ctlinnd ``reload'' command can be performed after a delay  of
       an  hour	 or so.	 It is also possible to provide both a host's name and
       its dotted-quad address in the file.

       For example:
	      ##  FOO has a password, UUNET doesn't.
	      ##  UUNET cannot post to local group.s
	      ##  These are comment lines.!foo.*

       If the file contains passwords, it should not be	 world-readable.   The
       file  /var/spool/news/data/hosts.nntp.nolimit,  if  it  exists  is read
       whenever the ``hosts.nntp'' file is read.   It  has  the	 same  format,
       although only the first field is used.  Any host mentioned in this file
       is not subject to the incoming connections limit	 specified  by	innd's
       ``-c''  flag.   This can be used to allow local hosts or time-sensitive
       peers, to connect regardless of the local conditions.

       Written by Rich $alz <> for  InterNetNews.   This  is
       revision 1.17, dated 1993/03/18.

       ctlinnd(8), innd(8), nnrpd(8).


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