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67 lines
2.5 KiB
Groff
67 lines
2.5 KiB
Groff
.TH TCPDCHK 8
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.SH NAME
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tcpdchk \- tcp wrapper configuration checker
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.SH SYNOPSYS
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tcpdchk [-a] [-d] [-i inet_conf] [-v]
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.SH DESCRIPTION
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.PP
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\fItcpdchk\fR examines your tcp wrapper configuration and reports all
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potential and real problems it can find. The program examines the
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\fItcpd\fR access control files (by default, these are
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\fI/etc/hosts.allow\fR and \fI/etc/hosts.deny\fR), and compares the
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entries in these files against entries in the \fIinetd\fR or \fItlid\fR
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network configuration files.
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.PP
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\fItcpdchk\fR reports problems such as non-existent pathnames; services
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that appear in \fItcpd\fR access control rules, but are not controlled
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by \fItcpd\fR; services that should not be wrapped; non-existent host
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names or non-internet address forms; occurrences of host aliases
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instead of official host names; hosts with a name/address conflict;
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inappropriate use of wildcard patterns; inappropriate use of NIS
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netgroups or references to non-existent NIS netgroups; references to
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non-existent options; invalid arguments to options; and so on.
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.PP
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Where possible, \fItcpdchk\fR provides a helpful suggestion to fix the
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problem.
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.SH OPTIONS
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.IP -a
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Report access control rules that permit access without an explicit
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ALLOW keyword. This applies only when the extended access control
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language is enabled (build with -DPROCESS_OPTIONS).
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.IP -d
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Examine \fIhosts.allow\fR and \fIhosts.deny\fR files in the current
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directory instead of the default ones.
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.IP "-i inet_conf"
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Specify this option when \fItcpdchk\fR is unable to find your
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\fIinetd.conf\fR or \fItlid.conf\fR network configuration file, or when
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you suspect that the program uses the wrong one.
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.IP -v
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Display the contents of each access control rule. Daemon lists, client
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lists, shell commands and options are shown in a pretty-printed format;
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this makes it easier for you to spot any discrepancies between what you
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want and what the program understands.
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.SH FILES
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.PP
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The default locations of the \fItcpd\fR access control tables are:
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.PP
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/etc/hosts.allow
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.br
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/etc/hosts.deny
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.SH SEE ALSO
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.na
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.nf
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tcpdmatch(8), explain what tcpd would do in specific cases.
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hosts_access(5), format of the tcpd access control tables.
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hosts_options(5), format of the language extensions.
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inetd.conf(5), format of the inetd control file.
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tlid.conf(5), format of the tlid control file.
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.SH AUTHORS
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.na
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.nf
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Wietse Venema (wietse@wzv.win.tue.nl),
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Department of Mathematics and Computing Science,
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Eindhoven University of Technology
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Den Dolech 2, P.O. Box 513,
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5600 MB Eindhoven, The Netherlands
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\" @(#) tcpdchk.8 1.3 95/01/08 17:00:30
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