how to give Telnet access

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LEARN ABOUT X11R4

tcpdmatch

TCPDMATCH(8)						      System Manager's Manual						      TCPDMATCH(8)

NAME

       tcpdmatch - tcp wrapper oracle

SYNOPSIS

       tcpdmatch [-d] [-i inet_conf] daemon client

       tcpdmatch [-d] [-i inet_conf] daemon[@server] [user@]client

DESCRIPTION

       tcpdmatch predicts how the tcp wrapper would handle a specific request for service.  Examples are given below.

       The  program examines the tcpd access control tables (default /etc/hosts.allow and /etc/hosts.deny) and prints its conclusion.  For maximal
       accuracy, it extracts additional information from your inetd network configuration file.

       When tcpdmatch finds a match in the access control tables, it identifies the matched rule. In addition, it displays the optional shell com-
       mands or options in a pretty-printed format; this makes it easier for you to spot any discrepancies between what you want and what the pro-
       gram understands.

ARGUMENTS

       The following two arguments are always required:

       daemon A daemon process name. Typically, the last component of a daemon executable pathname.

       client A host name or network address, or one of the `unknown' or `paranoid' wildcard patterns.

	      When a client host name is specified, tcpdmatch gives a prediction for each address listed for that client.

	      When a client address is specified, tcpdmatch predicts what tcpd would do when client name lookup fails.

       Optional information specified with the daemon@server form:

       server A host name or network address, or one of the `unknown' or `paranoid' wildcard patterns. The default server name is `unknown'.

       Optional information specified with the user@client form:

       user   A client user identifier. Typically, a login name or a numeric userid.  The default user name is `unknown'.

OPTIONS

       -d     Examine hosts.allow and hosts.deny files in the current directory instead of the default ones.

       -i inet_conf
	      Specify this option when tcpdmatch is unable to find your inetd.conf network configuration file, or when you suspect that  the  pro-
	      gram uses the wrong one.

EXAMPLES

       To predict how tcpd would handle a telnet request from the local system:

	    tcpdmatch in.telnetd localhost

       The same request, pretending that hostname lookup failed:

	    tcpdmatch in.telnetd 127.0.0.1

       To predict what tcpd would do when the client name does not match the client address:

	    tcpdmatch in.telnetd paranoid

       On some systems, daemon names have no `in.' prefix, or tcpdmatch may need some help to locate the inetd configuration file.

FILES

       The default locations of the tcpd access control tables are:

       /etc/hosts.allow
       /etc/hosts.deny

SEE ALSO

       tcpdchk(8), tcpd configuration checker
       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

																      TCPDMATCH(8)

SCO