• Start
• Documentation
  • PostgreSQL
  • mnoGoSearch
  • Apache 2.4
  • FreeBSD handbook
  • FreeBSD Manual
  • FreeBSD Source
• Tools
• Search
• Protected Area

plain

FreeBSD manual

keyword 1 2 3 4 5 6 7 8 9 n l

download PDF document: tcpdchk.8.pdf

TCPDCHK(8) FreeBSD System Manager's Manual TCPDCHK(8)
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.

TCPDCHK(8)