Rule equivalence of pf uRPF check

2009-09-12 Thread Maxim Khitrov
Hello all, I sent this message to -pf list, but no one answered. I would like to verify my assumptions regarding the way pf's uRPF check works. I'm using a Soekris net5501 board as a firewall; port 0 ($ext_if) is internet uplink, ports 1-3 ($int_if, $mil_if, $vpn_if) are separate lan segments

Re: Rule equivalence of pf uRPF check

2009-09-12 Thread Matthew Seaman
Maxim Khitrov wrote: block in quick on $int_if from !$int_if:network block in quick on !$int_if from $int_if:network block in quick from $int_if The OpenBSD pf faq states that urpf-check is equivalent to the antispoof rules, but the antispoof section lists only the last two rules in my example

Re: Rule equivalence of pf uRPF check

2009-09-12 Thread Maxim Khitrov
On Sat, Sep 12, 2009 at 9:10 AM, Matthew Seamanm.sea...@infracaninophile.co.uk wrote: Maxim Khitrov wrote: block in quick on $int_if from !$int_if:network block in quick on !$int_if from $int_if:network block in quick from $int_if The OpenBSD pf faq states that urpf-check is equivalent to