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Clean up release notes.

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Signed-off-by: Tom Eastep <teastep@shorewall.net>
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Tom Eastep 2011-05-27 06:42:56 -07:00
parent fbfe7b9f93
commit 8a0dc9f0f6
1 changed files with 19 additions and 20 deletions
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39
Shorewall/releasenotes.txt
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@ -20,7 +20,7 @@ VI. PROBLEMS CORRECTED AND NEW FEATURES IN PRIOR RELEASES
unallocated number when no device number is explicitly allocated.
2) Network developers have discovered an exploit that allows hosts to
poke holes in the firewall. The known ways to protect against the
poke holes in a firewall. The known ways to protect against the
exploit are:
a) rt_filter (Shorewall's routefilter). Only applicable to IPv4
@ -31,34 +31,33 @@ VI. PROBLEMS CORRECTED AND NEW FEATURES IN PRIOR RELEASES
This approach is not appropriate for bridges and other cases,
where the 'routeback' option is specified or implied.
For non-bridges, Shorewall will insert a hairpin rule, provided
that the following options are not specified:
For non-routeback interfaces, Shorewall and Shorewall6 will insert
a hairpin rule, provided that the routefilter option is not
specified. The rule will dispose of hairpins according to the
setting of two new options in shorewall.conf and shorewall6.conf:
- routefilter
- routeback
FILTER_LOG_LEVEL
Specifies the logging level; default is 'info'. To omit
logging, specify FILTER_LOG_LEVEL=none.
The rule will handle hairpins according to the setting of two new
options in shorewall.conf and shorewall6.conf:
FILTER_LOG_LEVEL specifies the logging level; default is 'info'.
To omit logging, specify FILTER_LOG_LEVEL=none.
FILTER_DISPOSITION specifies the disposition. Default is DROP and
the possible values are DROP, A_DROP, REJECT and A_REJECT.
FILTER_DISPOSITION
Specifies the disposition. Default is DROP and the possible
values are DROP, A_DROP, REJECT and A_REJECT.
To deal with bridges and other routeback interfaces , there is now
a 'filter' option in /shorewall/interfaces and
/etc/shorewall6/interfaces.
The value of the 'filter' option is a list of addresses enclosed in
in parentheses. Where only a single address is listed, the
parentheses may be deleted. When a packet from a filtered address
is received on the interface, it is handled based on the new
options described above.
The value of the 'filter' option is a list of network addresses
enclosed in in parentheses. Where only a single address is listed,
the parentheses may be omitted. When a packet from a filtered
address is received on the interface, it is disposed of based on
the new FILTER_ options described above.
For each bridge, you should list all of your other local networks
(those networks not attached to the bridge) in the bridge's filter
list.
For a bridge or other routeback interface, you should list all of
your other local networks (those networks not attached to the
bridge) in the bridge's filter list.
Example: