TCPDCHK(8)							    TCPDCHK(8)



NAME
       tcpdchk - tcp wrapper configuration checker

SYNOPSIS
       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 network configuration file.

       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.

       -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 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.

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)