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TCPDCHK(8)							    TCPDCHK(8)

NAME
       tcpdchk - tcp wrapper configuration checker

SYNOPSYS
       tcpdchk [-a] [-d] [-i inet_conf]	[-v]

DESCRIPTION
       tcpdchk	examines your tcp wrapper configuration	and reports all	poten-
       tial and	real problems it can  find.  The  program  examines  the  tcpd
       access  control	files  (by  default,  these  are  /etc/hosts.allow and
       /etc/hosts.deny), and compares  the  entries  in	 these	files  against
       entries in the inetd or tlid network configuration files.

       tcpdchk	reports	problems such as non-existent pathnames; services that
       appear in tcpd access control rules, but	are not	 controlled  by	 tcpd;
       services	 that  should  not be wrapped; non-existent host names or non-
       internet	address	forms; occurrences of host aliases instead of official
       host  names;  hosts  with a name/address	conflict; inappropriate	use of
       wildcard	patterns; inappropriate	use of NIS netgroups or	references  to
       non-existent NIS	netgroups; references to non-existent options; invalid
       arguments to options; and so on.

       Where possible, tcpdchk provides	a helpful suggestion to	fix the	 prob-
       lem.

OPTIONS
       -a     Report  access  control  rules  that  permit  access  without an
	      explicit ALLOW keyword. This  applies  only  when	 the  extended
	      access   control	 language   is	 enabled  (build  with	-DPRO-
	      CESS_OPTIONS).

       -d     Examine hosts.allow and hosts.deny files in the  current	direc-
	      tory instead of the default ones.

       -i inet_conf
	      Specify  this  option  when  tcpdchk  is	unable	to  find  your
	      inetd.conf or tlid.conf network configuration file, or when  you
	      suspect that the program uses the	wrong one.

       -v     Display the contents of each access control rule.	 Daemon	lists,
	      client lists, shell commands and options are shown in a  pretty-
	      printed  format;	this  makes it easier for you to spot any dis-
	      crepancies between what you want and  what  the  program	under-
	      stands.

FILES
       The default locations of	the tcpd access	control	tables are:

       /etc/hosts.allow
       /etc/hosts.deny

SEE ALSO
       tcpdmatch(8), explain what tcpd would do	in specific cases.
       hosts_access(5),	format of the tcpd access control tables.
       hosts_options(5), format	of the language	extensions.
       inetd.conf(5), format of	the inetd control file.
       tlid.conf(5), format of the tlid	control	file.

AUTHORS
       Wietse Venema (wietse@wzv.win.tue.nl),
       Department of Mathematics and Computing Science,
       Eindhoven University of Technology
       Den Dolech 2, P.O. Box 513,
       5600 MB Eindhoven, The Netherlands

								    TCPDCHK(8)

NAME | SYNOPSYS | DESCRIPTION | OPTIONS | FILES | SEE ALSO | AUTHORS

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