This is a minor release of Shorewall. Problems Corrected since version 1.4.7: 1) Tuomo Soini has supplied a correction to a problem that occurs using some versions of 'ash'. The symptom is that "shorewall start" fails with: local: --limit: bad variable name iptables v1.2.8: Couldn't load match `-j':/lib/iptables/libipt_-j.so: cannot open shared object file: No such file or directory Try `iptables -h' or 'iptables --help' for more information. 2) Andres Zhoglo has supplied a correction that avoids trying to use the multiport match iptables facility on ICMP rules. Example of rule that previously caused "shorewall start" to fail: ACCEPT loc $FW icmp 0,8,11,12 3) Previously, if the following error message was issued, Shorewall was left in an inconsistent state. Error: Unable to determine the routes through interface xxx 4) Handling of the LOGUNCLEAN option in shorewall.conf has been corrected. 5) In Shorewall 1.4.2, an optimization was added. This optimization involved creating a chain named "_frwd" for most zones defined using the /etc/shorewall/hosts file. It has since been discovered that in many cases these new chains contain redundant rules and that the "optimization" turns out to be less than optimal. The implementation has now been corrected. 6) When the MARK value in a tcrules entry is followed by ":F" or ":P", the ":F" or ":P" was previously only applied to the first Netfilter rule generated by the entry. It is now applied to all entries. 7) The original fix for item 5) above contained a bug which caused the "_frwd" chain to have too few rules. That has been corrected (twice). 8) An incorrect comment concerning Debian's use of the SYBSYSLOCK option has been removed from shorewall.conf. 9) Previously, neither the 'routefilter' interface option nor the ROUTE_FILTER parameter were working properly. This has been corrected (thanks to Eric Bowles for his patch). The definition of the ROUTE_FILTER option has changed however. Previously, ROUTE_FILTER=Yes was documented as enabling route filtering on all interfaces (which didn't work). Beginning with this release, setting ROUTE_FILTER=Yes will enable route filtering of all interfaces brought up while Shorewall is started. As a consequence, ROUTE_FILTER=Yes can coexist with the use of the 'routefilter' option in the interfaces file. 10) If MAC verification was enabled on an interface that had a /32 address with a broadcast address then an error would occur during startup. Migration Issues: 1. The definition of the ROUTE_FILTER option in shorewall.conf has changed as described in item 9) above. New Features: 1. A new QUEUE action has been introduced for rules. QUEUE allows you to pass connection requests to a user-space filter such as ftwall (http://p2pwall.sourceforge.net). The ftwall program allows for effective filtering of p2p applications such as Kazaa. For example, to use ftwall to filter P2P clients in your 'loc' zone, you would add the following rules: QUEUE loc net tcp QUEUE loc net udp QUEUE loc fw udp You would normally want to place those three rules BEFORE any ACCEPT rules for loc->net or loc->fw udp or tcp. Note: When the protocol specified is TCP ("tcp", "TCP" or "6"), Shorewall will only pass connection requests (SYN packets) to user space. This is for compatibility with ftwall. 2. A BLACKLISTNEWNONLY option has been added to shorewall.conf. When this option is set to "Yes", the blacklists (dynamic and static) are only consulted for new connection requests. When set to "No" (the default if the variable is not set), the blacklists are consulted on every packet. Setting this option to "No" allows blacklisting to stop existing connections from a newly blacklisted host but is more expensive in terms of packet processing time. This is especially true if the blacklists contain a large number of entries. 3. Chain names used in the /etc/shorewall/accounting file may now begin with a digit ([0-9]) and may contain embedded dashes ("-").