nat clients don't access internet

hello,
i'm using ipfilter at home, and configured a local network.
solaris 10, 2 nics: ife0 (external) eri0 (internal)
everything works fine when i'm on blade 100
but on a machine on a local network, i can't go to internet, don't
understand why...

blade100-me% cat /etc/ipf/ipnat.conf
map ife0 192.168.1.0/24 -> 0/32 portmap tcp/udp 10000:40000
map ife0 192.168.1.0/24 -> 0/32

blade100-root% ipfstat -on
@1 pass out quick on lo0 all
@2 block out all
@3 pass out log quick on ife0 proto tcp from any to any keep state keep
frags
@4 pass out log quick on ife0 proto udp from any to any keep state keep
frags
@5 pass out log quick on ife0 proto icmp from any to any keep state
blade100-root% ipfstat -in
@1 pass in quick on lo0 all
@2 block in log all

ipmon -o N shows nothing

where is my mistake? if somebody can help?