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TCPDCHK(8)		    System Manager's Manual		    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  ac-
       cess   control  files  (by  default,  these  are	 /etc/hosts.allow  and
       /etc/hosts.deny), and compares the entries in these files  against  en-
       tries 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-in-
       ternet 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 ex-
	      plicit ALLOW keyword. This applies only when the extended	access
	      control language is enabled (build with -DPROCESS_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  in-
	      etd.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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