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tcpdchk (8)
  • tcpdchk (8) ( Solaris man: Команды системного администрирования )
  • >> tcpdchk (8) ( FreeBSD man: Команды системного администрирования )
  • tcpdchk (8) ( Linux man: Команды системного администрирования )
  •  

    NAME

    tcpdchk - tcp wrapper configuration checker
     
    

    SYNOPSYS

    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/hosts.allow and /etc/hosts.deny), and compares the entries in these files against entries in the inetd or tlid network configuration files.

    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 problem.  

    OPTIONS

    -a
    Report access control rules that permit access without an explicit ALLOW keyword. This applies only when the extended access control language is enabled (build with -DPROCESS_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 tcpdchk is unable to find your inetd.conf or tlid.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

    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.
    tlid.conf(5), format of the tlid 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
    
    

     

    Index

    NAME
    SYNOPSYS
    DESCRIPTION
    OPTIONS
    FILES
    SEE ALSO
    AUTHORS


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