ipfilter does not work on Solaris 10

[Giles, George]

My Solaris 10 x86 install does not run  ipfilter properly. I have to qualify this with a couple of observations, I am a solaris 10 newbie, the last time I admin’d a sun box on the internet was 1989 when security was not what it is now, I have a lot of experience with ipfw on BSD so I have some knowledge.   I modload ipf and then use nmap from a linux box to scan and I see that all ports are open (Solaris 10 installs insecure if I am not mistaken). When I apply simple rules like block all, I can still get in. modstat shows that the module is loaded and ipfstat shows that the rules have been loaded.   I do not believe it does not work, there must be some configuration step I am missing (as near as I can tell there are not many, ie load and apply rules).   Thanks in advance for patience with a newbie.   Please advise.