Date: Fri, 9 Sep 2005 23:19:16 -0700 From: Huzeyfe Onal <huzeyfe.onal@gmail.com> To: bob self <bobself@charter.net> Cc: freebsd-pf@freebsd.org Subject: Re: selective logging of what pf is rejecting? Message-ID: <ffa9ac690509092319555c5445@mail.gmail.com> In-Reply-To: <4321FB84.7070909@charter.net> References: <4321D9DF.5080206@charter.net> <ffa9ac69050909121711783ef@mail.gmail.com> <200509092153.00708.max@love2party.net> <4321FB84.7070909@charter.net>
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Hi, do you see the packets with tcpdump with -i $ext_if options? #tcpdump -ttt -n -i rl0 icmp for icmp packets.. 2005/9/9, bob self <bobself@charter.net>: > Max Laier wrote: > > >On Friday 09 September 2005 21:17, Huzeyfe Onal wrote: > > > > > >>hi, > >>you can use tcpdump to watch pf action, why it drop or accept packets. > >> > >>try to use > >>tcpdump -i pflog0 -e > >> > >> > > > >right. > > > > > > > >>ps: pflogd must be running... also read > >>http://www.openbsd.com/faq/pf/logging.html > >> > >> > > > >wrong. pflogd just records the log data to disk, no need to watch the > >livefeed. > > > > > > > >>2005/9/9, bob self <bobself@charter.net>: > >> > >> > >>>My pf.conf file looks something like this > >>> > >>>block in all > >>>block out all > >>>pass quick on lo0 keep state > >>>antispoof for $ext_if > >>> > >>>pass in on $ext_if from <goodguys> to any keep state > >>>pass in log on $ext_if proto tcp from any to $ext_if port 80 flags S/SA > >>>keep state label "www" #apache > >>>block in on $ext_if from <badguys> to any > >>> > >>>pass out on $ext_if proto tcp from any to any flags S/SA keep state # > >>>allow any tcp setup out > >>>pass out on $ext_if proto udp all keep state # allow any > >>>udp out > >>> > >>>pass on $ext_if inet proto icmp all icmp-type 8 code 0 keep state # > >>>allow echo request in or out, (man pf.conf:1618) > >>> > >>> > >>>Is there a way I can turn on (temporarily) logging of wht pf is not > >>>allowing to come in? Also, is there a real-time tool that > >>>will let you watch what pf if blocking from coming in? > >>> > >>>How could you just log what pf allows to get through? > >>> > >>> > > > >You can use pcap filters to get only info you are interested in. See > >tcpdump(1)::ifname ff. ... the "action" filter might be of special interest > >for your question. > > > > > > > I guess that my question is really where do I put the 'log' word(s) in > pf.conf to be able to do this. > I tried adding 'log' to everything in my pf.conf to see pinging from the > outside and using tcpdump I don't see anything. > I'm using tcpdump like this: > > tcpdump -l -n -e -ttt -i pflog0 > > > -- Huzeyfe ÖNAL --- First Turkish Qmail book is out! Go check it. Duydunuz mu! Turkiye'nin ilk Qmail kitabi cikti. http://www.acikakademi.com/catalog/qmail/
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