Firewall problem

[Kevin D. Kinsey, DaleCo, S.P.]

Andrew L. Gould wrote:

>On Wednesday 01 October 2003 01:18 pm, Gary wrote:
>  
>
>>I have set my firewall to
>>
>>firewall_type="open"
>>firewall_enable="YES"
>>
>>and when I want to drop a specific IP, I enter it manually, it accepts it,
>>but it does not drop the packets..
>>
>>I am getting a lot of virus activity on my SMTP port 25. So I wanted to
>>drop a few IP ranges/addresses..
>>
>>00100  62054   5483792 allow ip from any to any via lo0
>>00200      0         0 deny ip from any to 127.0.0.0/8
>>00300      0         0 deny ip from 127.0.0.0/8 to any
>>65000 873327 293931424 allow ip from any to any
>>65100      0         0 deny tcp from 24.92.226.153 to any
>>65110      0         0 deny ip from 213.191.102.86 to any
>>65535      0         0 deny ip from any to any
>>
>>Yet, checking later in my SMTP logs, I am still getting pounded by the
>>listed addresses. Can anyone explain why this isn't working?
>>
>>Thanks,
>>    
>>
>
>I'm a newbie at firewalls; but I'll take a guess:  Doesn't rule 65000 let all 
>ip packets in before rules 65100 and 65110 are considered?
>
>Andrew
>  
>
Yes, in this case, since this is ipfw, and "first match wins."

Using ipf, it's the opposite; gotta love 'Nix! ;-)