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.TH TCPDMATCH 8
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.SH NAME
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tcpdmatch \- tcp wrapper oracle
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.SH SYNOPSIS
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tcpdmatch [-d] [-i inet_conf] daemon client
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.sp
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tcpdmatch [-d] [-i inet_conf] daemon[@server] [user@]client
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.SH DESCRIPTION
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.PP
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\fItcpdmatch\fR predicts how the tcp wrapper would handle a specific
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request for service. Examples are given below.
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.PP
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The program examines the \fItcpd\fR access control tables (default
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\fI/etc/hosts.allow\fR and \fI/etc/hosts.deny\fR) and prints its
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conclusion. For maximal accuracy, it extracts additional information
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from your \fIinetd\fR network configuration file.
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.PP
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When \fItcpdmatch\fR finds a match in the access control tables, it
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identifies the matched rule. In addition, it displays the optional
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shell commands or options in a pretty-printed format; this makes it
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easier for you to spot any discrepancies between what you want and what
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the program understands.
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.SH ARGUMENTS
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The following two arguments are always required:
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.IP daemon
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A daemon process name. Typically, the last component of a daemon
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executable pathname.
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.IP client
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A host name or network address, or one of the `unknown\' or `paranoid\'
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wildcard patterns.
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.sp
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When a client host name is specified, \fItcpdmatch\fR gives a
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prediction for each address listed for that client.
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.sp
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When a client address is specified, \fItcpdmatch\fR predicts what
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\fItcpd\fR would do when client name lookup fails.
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.PP
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Optional information specified with the \fIdaemon@server\fR form:
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.IP server
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A host name or network address, or one of the `unknown\' or `paranoid\'
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wildcard patterns. The default server name is `unknown\'.
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.PP
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Optional information specified with the \fIuser@client\fR form:
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.IP user
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A client user identifier. Typically, a login name or a numeric userid.
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The default user name is `unknown\'.
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.SH 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 \fItcpdmatch\fR is unable to find your
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\fIinetd.conf\fR network configuration file, or when
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you suspect that the program uses the wrong one.
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.SH EXAMPLES
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To predict how \fItcpd\fR would handle a telnet request from the local
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system:
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.sp
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.ti +5
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tcpdmatch in.telnetd localhost
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.PP
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The same request, pretending that hostname lookup failed:
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.sp
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.ti +5
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tcpdmatch in.telnetd 127.0.0.1
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.PP
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To predict what tcpd would do when the client name does not match the
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client address:
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.sp
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.ti +5
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tcpdmatch in.telnetd paranoid
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.PP
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On some systems, daemon names have no `in.\' prefix, or \fItcpdmatch\fR
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may need some help to locate the inetd configuration file.
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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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tcpdchk(8), tcpd configuration checker
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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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.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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\" @(#) tcpdmatch.8 1.5 96/02/11 17:01:35
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