shorewall_code/Shorewall2/releasenotes.txt

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Shorewall 2.1.0
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Problems Corrected since 2.0.3
1) A non-empty DEST entry in /etc/shorewall/tcrules will generate an
error and Shorewall fails to start.
2) A potential security vulnerablilty in the way that Shorewall
handles temporary files and directories has been corrected.
3) Two problems with logging NAT rules (DNAT and REDIRECT) could cause
startup failures.
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Issues when migrating from Shorewall 2.0 to Shorewall 2.1:
None.
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New Features:
1) ICMP packets that are in the INVALID state are now dropped by the
Reject and Drop default actions. They do so using the new
'dropInvalid' builtin action.