IP Filter changes in FreeBSD

Jim Arnold jim0266 at yahoo.com
Mon Feb 7 08:09:08 PST 2005

>On Mon, Feb 07, 2005 at 12:24:09AM -0500, Jim Arnold wrote:
>>  I updated my firewall that is using IPF. I went from FreeBSD 4.7
>>  stable to 4.11 stable. When using 4.7 stable I only had this is my
>>  rc.conf file:
>>  ipfilter_enable="YES"
>>  ipfilter_program="/sbin/ipf"
>>  ipfilter_rules="/etc/ipf.conf"
>>  ipfilter_flags=""
>>  When I went to 4.11 stable I had to uncomment these options in my
>>  kernel config file:
>>  options         IPFILTER
>>  options         IPFILTER_LOG
>>  I'm just curious why it worked without the above options in my kernel
>>  for 4.7 and I had to have them in 4.11?
>If you don't have it in your kernel, the module will be loaded at boot
>time if it's available.  If you don't have the module either, you
>can't use ipfilter.

I must have been using the module with 4.7 stable since I did not 
have that in the kernel I was running with 4.7. After I upgraded to 
4.11 and IPF was not working I edited my kernel config file to 
uncomment the lines for IPF and then compiled the new kernel. I still 
don't have an answer why this happened.

Was the module taken out of 4.11 or an earlier version on FreeBSD? 
I'm just curious as a learning experience what went on in my 


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