TCPDCHK

Maintenance Commands                                 TCPDCHK(1M)

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 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 network  configuration  file,  or  when you suspect that the program uses the wrong one.

-v  Display the contents of each access control rule. Dae- mon 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:

SunOS 5.10               Last change:                          1

Maintenance Commands                                 TCPDCHK(1M)

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

SEE ALSO tcpdmatch(1M), explain what tcpd would do in specific cases. hosts_access(4), format of the tcpd access control tables. hosts_options(4), format of the language extensions. inetd.conf(4), format of the inetd control file. inetd(1M), how to invoke tcpd from inetd using the libwrap library. inetadm(1M), managing inetd services in the Service Management Framework.

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

ATTRIBUTES See attributes(5) for descriptions of the following attri- butes:

_______________________________________   |   ATTRIBUTE TYPE   |  ATTRIBUTE VALUE| |_______________________________________   | Availability       |  SUNWtcpd       | |_______________________________________   | Interface Stability|  External       | |____________________|_________________|

NOTES Source for tcp_wrappers is available in the SUNWtcpdS pack- age.

SunOS 5.10               Last change:                          2