forked from extern/shorewall_code
114 lines
3.9 KiB
Plaintext
114 lines
3.9 KiB
Plaintext
1) On systems running Upstart, shorewall-init cannot reliably secure
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the firewall before interfaces are brought up.
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Corrected in Shorewall 4.4.19.1
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2) There is a harmless duplicate ACCEPT rule in the INPUT filter chain
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when the firewall is stopped.
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Corrected in Shorewall 4.4.19.1
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3) Shorewall interprets all 'nexthop' routes as default routes when
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analyzing the pre-start routing configuration. This can lead to
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unwanted default routes when the firewall was started or stopped.
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Corrected in Shorewall 4.4.19.1
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3) A defect introduced in Shorewall 4.4.17 broke the ability to
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specify ':<low port>-<high port>' in the ADDRESS column of
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/etc/shorewall/masq.
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Corrected in Shorewall 4.4.19.1
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4) There are several known problems in Complex TC:
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a) The following entry in /etc/shorewall/tcclasses
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A:1 - 10*full/100:50ms 20*full/100 1 tcp-ack
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produces this error:
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ERROR: Unknown INTERFACE (A) : /etc/shorewall/tcclasses
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b) Shorewall reserves class number 1 for the root class of the
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queuing discipline. Definining class 1 in
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/etc/shorewall/tcclasses results in a run-time error.
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c) The compiler does not complain if a CLASSID specified in the MARK
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column of tcrules refers to an IFB class. Such a rule is
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nonsensical since packets are passed through the IFB before
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they are passed through any marking rules.
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d) Where there are more than 10 tcdevices, tcfilter entries can
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generate invalid rules.
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These problems are corrected in Shorewall 4.4.19.2.
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3) Double exclusion involving ipset lists is not detected,
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resulting in anomalous behavior.
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Example:
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ACCEPT:info $FW net:!10.1.0.7,10.1.0.9,+[!my-host[src]]]
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Corrected in Shorewall 4.4.19.2.
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4) The changes in 4.4.19.1 that corrected long-standing issues with
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default route save/restore are incompatible with 'gawk'. When
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'gawk' is installed (rather than 'mawk'), awk syntax errors having
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to do with the symbol 'default' were issued.
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Workaround: Install mawk
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Corrected in Shorewall 4.4.19.3.
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5) An entry in the USER/GROUP column in the rules and tcrules files
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can cause run-time start/restart failures if the rule(s) being
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added did not have the firewall as the source or and was not being
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added to the POSTROUTING chain.
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Workaround: Insure that all USER/GROUP matches are only specified
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when the SOURCE is $FW (rules file) or is being added to the
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POSTROUTING chain (:T designator in the tcrules file).
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Corrected in Shorewall 4.4.19.3.
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6) The compiler allow degenerate entries (only the BAND column
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specified) in /etc/shorewall/tcpri. Such entries cause a run-time
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failure during start/restart.
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Corrected in Shorewall 4.4.19.4.
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7) It is possible to specify tcfilters and tcrules that classify
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traffic with the class-id of a non-leaf HFSC class. Such
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classes are not capabable of handling packets.
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If a non-leaf class is specified as the default class, then
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a run-time start/restart failure occurs.
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Corrected in Shorewall 4.4.19.4.
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8) Shorewall does not check for the existance of ipsets mentioned in
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the configuration, potentially resulting in a run-time
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start/restart failure.
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Corrected in Shorewall 4.4.19.4.
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9) As currently implemented, the 'refresh' command can fail or
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can result in a ruleset other than what was intended. If there
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have been changes in the ruleset since it was originally
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started/restarted/restored that added or deleted sequenced chains
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(chains such as ~lognnn and ~exclnnn), the resulting ruleset can
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jump to the wrong such chains or can fail to 'refresh'
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successfully.
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Workaround: Use 'restart' rather than 'refresh'
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Corrected in Shorewall 4.4.19.4.
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10) 'shorewall6 refresh issues a harmless 'ip6tables: Chain exists'
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error message.
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Corrected in Shorewall 4.4.19.4.
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