README.md
tcp_wrappers for Debian
----------------------
Extensions:
----------
There are a number of Debian specific changes to TCP wrappers:
* libwrap.so.0 is available for dynamic linking.
* You can blacklist a whole bunch of hosts at once by specifying a
file that contains a list of those hosts instead of just naming
a host. See the hosts_access(5) manpage.
Library versioning:
------------------
TCP wrappers isn't distributed as a shared library upstream, so the
versioning scheme used for TCP wrappers may not match Linux's library
versioning schme. Hence, libwrap has a soname of libwrap0 (version 7.6),
instead of libwrap7 (version 6).
Build options:
-------------
STYLE = -DPROCESS_OPTIONS
Debian TCP Wrappers use the extended syntax for /etc/hosts.allow
and /etc/hosts.deny. This particularly affects spawning other
commands on connections, see the hosts_options(5) manpage for
more details.
FACILITY = LOG_DAEMON
SEVERITY = LOG_INFO
TCP Wrappers logs as daemon.info (rather than mail.info).
The options ALWAYS_RFC931, ALWAYS_HOSTNAME and PARANOID have not been
enabled because these features can be enabled at runtime. The option
APPEND_DOT is not enabled because of compatibility reasons.
-- Anthony Towns <ajt@debian.org>, Tue, 10 Aug 1999 12:06:33 +1000