Date: Sat, 14 Jul 2012 18:59:54 +0100 From: Chris Rees <utisoft@gmail.com> To: Ian Smith <smithi@nimnet.asn.au> Cc: freebsd-ipfw@freebsd.org, freebsd-bugs@freebsd.org Subject: Re: kern/165939: [ipw] security bug: incomplete firewall rules loaded if tables are used in ipfw.conf Message-ID: <CADLo83-C_6=AMHejePkCLnRfQWKFUwvM7as5vSnJDRMULKH4vw@mail.gmail.com> In-Reply-To: <20120715025005.I74353@sola.nimnet.asn.au> References: <201207141614.q6EGEi7P024139@freefall.freebsd.org> <20120715025005.I74353@sola.nimnet.asn.au>
next in thread | previous in thread | raw e-mail | index | archive | help
On 14 Jul 2012 18:49, "Ian Smith" <smithi@nimnet.asn.au> wrote: > > On Sat, 14 Jul 2012, crees@freebsd.org wrote: > > http://www.freebsd.org/cgi/query-pr.cgi?pr=165939 > > > Description > > If user has tables used in /etc/ipfw.conf for example: > > > > table 1 add 64.6.108.239 > > > > then firewall restart: > > > > /etc/rc.d/ipfw start > > > > fails with: > > Line 8: setsockopt(IP_FW_TABLE_ADD): File exists > > Firewall rules loaded. > > > > and incomplete ruleset is loaded. This is serious security problem. > > > > How-To-Repeat > > Fix > > in /etc/rc.firewall > > > > after ${fwcmd} -f flush > > you need to flush tables too with command > > > > ipfw table all flush > > Yes, to such a ruleset you'd need to add 'table all flush' too. > > ipfw flush specifically does not flush tables. I've long relied upon > that, using mostly static tables only reloaded from a file saved hourly > by cron, when $firewall_script finds tables are not loaded - ie at boot. Not A Bug then? Chris
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CADLo83-C_6=AMHejePkCLnRfQWKFUwvM7as5vSnJDRMULKH4vw>