shorewall_code/Shorewall2/releasenotes.txt
2004-04-29 18:00:56 +00:00

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Shorewall 2.0.2-Beta 1
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Problems Corrected since 2.0.1
1) The /etc/init.d/shorewall script installed on Debian by install.sh
failed silently due to a missing file
(/usr/share/shorewall/wait4ifup). That file is not part of the
normal Shorewall distribution and is provided by the Debian
maintainer.
2) A meaningless warning message out of the proxyarp file processing
has been eliminated.
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Issues when migrating from Shorewall 2.0.0 to Shorewall 2.0.1:
1) Dynamic Zone support.
If you don't need to use the "shorewall add" and "shorewall delete"
commands, you should set DYNAMIC_ZONES=No in
/etc/shorewall/shorewall.conf.
New Features:
1) Shorewall has now been integrated with
iptables-save/iptables-restore to provide very fast start and
restart. The elements of this integration are as follows:
a) The 'shorewall save' command now saves the current configuration
in addition to the current dynamic blacklist. If you have
dynamic zones, you will want to issue 'shorewall save' when the
zones are empty or the current contents of the zones will be
restored by the 'shorewall restore' and 'shorewall -f start'
commands.
b) The 'shorewall restore' command has been added. This command
restores the configuration at the time of the last 'save'.
c) The -f (fast) option has been added to 'shorewall start'. When
specified (e.g. 'shorewall -f start'), shorewall will perform a
'shorewall restore' if there is a saved configuration. If there
is no saved configuration, a normal 'shorewall start' is
performed.
d) The /etc/init.d/shorewall script now translates the 'start'
command into 'shorewall -f start' so that fast restart is
possible.
e) When a state-changing command encounters an error and there is a
current saved configuration, that configuration will be restored
(currently, the firewall is placed in the 'stopped' state).
f) If you have previously saved the running configuration and want
Shorewall to discard it, simply 'rm /var/lib/shorewall/restore'.
WARNING: iptables 1.2.9 is broken with respect to iptables-save;
you must patch iptables 1.2.9 with the iptables patch availale from
the Shorewall errata page.
2) The previous implementation of dynamic zones was difficult to
maintain. I have changed the code to make dynamic zones optional
under the control of the DYNAMIC_ZONES option in
/etc/shorewall/shorewall.conf.
3) In earlier Shorewall 2.0 releases, Shorewall searches in order the
following directories for configuration files.
a) The directory specified in a 'try' command or specified using
the -c option.
b) /etc/shorewall
c) /usr/share/shorewall
In this release, the CONFIG_PATH option is added to shorewall.conf.
CONFIG_PATH contains a list of directory names separated by colons
(":"). If not set or set to a null value (e.g., CONFIG_PATH="") then
"CONFIG_PATH=/etc/shorewall:/usr/share/shorewall" is assumed.
Now Shorewall searches for shorewall.conf according to the old
rules and for other configuration files as follows:
a) The directory specified in a 'try' command or specified using
the -c option.
b) Each directory in $CONFIG_PATH is searched in sequence.
In case it is not obvious, your CONFIG_PATH should include
/usr/share/shorewall and your shorewall.conf file must be in the
directory specified via -c or in a try command, in /etc/shorewall
or in /usr/share/shorewall.
For distribution packagers, the default CONFIG_PATH is set in
/usr/share/shorewall/configpath. You can customize this file to
have a default that differs from mine.
4) Previously, in /etc/shorewall/nat a Yes (or yes) in the LOCAL column
would only take effect if the ALL INTERFACES column also contained
Yes or yes. Now, the LOCAL columns contents are treated
independently of the contents of the ALL INTERFACES column.
5) The folks at Mandrake have created yet another kernel module
naming convention (module names end in "ko.gz"). As a consequence,
beginning with this release, if MODULE_PREFIX isn't specified in
shorewall.conf, then the default value is "o gz ko o.gz ko.gz".
6) An updated bogons file is included in this release.
7) In /etc/shorewall/rules and in action files generated from
/usr/share/shorewall/action.template, rules that perform logging can
specify an optional "log tag". A log tag is a string of alphanumeric
characters and is specified by following the log level with ":" and
the log tag.
Example:
ACCEPT:info:ftp net dmz tcp 21
The log tag is appended to the log prefix generated by the LOGPREFIX
variable in /etc/shorewall/conf. If "ACCEPT:info" generates the log
prefix "Shorewall:net2dmz:ACCEPT:" then "ACCEPT:info:ftp" will
generate "Shorewall:net2dmz:ACCEPT:ftp " (note the trailing blank).
The maximum length of a log prefix supported by iptables is 29
characters; if a larger prefix is generated, Shorewall will issue a
warning message and will truncate the prefix to 29 characters.
8) A new "-q" option has been added to /sbin/shorewall commands. It
causes the start, restart, check and refresh commands to produce
much less output so that warning messages are more visible (when
testing this change, I discovered a bug where a bogus warning
message was being generated).