tcpdchk(1Mtcp)
tcpdchk --
check tcp wrapper configuration
Synopsis
tcpdchk [-a] [-d]
[-i inet_conf] [-v]
Description
tcpdchk examines your tcp wrapper configuration and reports all
potential and real problems it can find. The program examines the
tcpd access control files (by default, these are
/etc/inet/hosts.allow and
/etc/inet/hosts.deny), and compares the
entries in these files against entries in the inetd
network configuration file.
Among the problems that
tcpdchk reports are 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; and
invalid arguments to options.
Where possible, tcpdchk provides a helpful suggestion to fix the
problem.
Options
tcpdchk understands the following 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
directory instead of the default ones.
-i inet_conf-
Specify this option if 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 discrepancies between what you
want and what the program understands.
Files
/etc/inet/hosts.allow
/etc/inet/hosts.deny
References
tcpdmatch(1Mtcp),
hosts_access(4tcp),
inetd.conf(4tcp)
Notices
Author
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
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004