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MKBL4(8)			     mkbl4			      MKBL4(8)

NAME
       mkbl4 - Process IPv4 SOCKS blacklist file

SYNOPSIS

       /usr/local/sbin/mkbl4 {txtfile} {dbfile}

DESCRIPTION
       mkbl4 reads txtfile, which is a flat, plain text	file whose lines are
       formatted as follows:

	   description:aaa.bbb.ccc.ddd-eee.fff.ggg.hhh

       The description part of each line, the part that	precedes the colon, is
       ignored.	An IPv4	address	range, expressed as a starting-ending address
       range, follows the colon.

       The IP address ranges are sorted, and overlapping ranges	are removed.
       mkbl4 creates dbfile, a binary database format that's used by the
       sockd(1)[1] SOCKS server. The "block4=" setting in the socksrc(5)[2]
       configuration file.

       The contents of any existing dbfile are replaced	complete.

	   Note

	   mkbl4 creates a new database	in a temporary file, then renames it
	   to dbfile. It is safe to run	mkbl4 while sockd is using dbfile at
	   the same time.

SEE ALSO
       socksify(1)[3], socksrc(5)[2].

AUTHORS
       Double Precision, Inc.

NOTES
	1.

	   sockd(1)
	   [set	$man.base.url.for.relative.links]/sockd.html

	2.

	   socksrc(5)
	   [set	$man.base.url.for.relative.links]/socksrc.html

	3.

	   socksify(1)
	   [set	$man.base.url.for.relative.links]/socksify.html

Courier	Mail Server		  10/28/2020			      MKBL4(8)

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