PF Issue with BETA4

Thomas T. Veldhouse veldy at veldy.net
Fri Sep 17 07:14:00 PDT 2004


Max Laier wrote:

>On Friday 17 September 2004 05:00, Thomas T. Veldhouse wrote:
>  
>
>>It seems that, at least with the PF devices built into the kernel that
>>an issue arises during shutdown.  As I was rebooting the server, I
>>noticed that the disks were syncing and yet there was a huge amount of
>>traffic on my router to the Internet.  Upon inspection, packets were
>>still passing through the kernel and a large download was still going on
>>through a kernel that should have long ago quite passing traffic!  In
>>other words, it appears that the NAT function of PF does not shutdown as
>>it should while the the OS is shutting down.  Traffic ceases almost
>>immediately with IPFW and IPFILTER.
>>    
>>
>
>Hmmm? So you are saying that staying up as long as possible is an error? I 
>don't quite see the point in shutting down early. If you still want to, you 
>can script it somewhere. "echo block all | pfctl -Fa -f-"
>
>  
>
Well ... what is the state of the firewall at this time?  Is it just 
stateful connections that are open?  IPFW and IPFILTER both close these 
connections immediately.  I am reasonably sure that this should probably 
behave similar to the other packet filters.

Tom Veldhouse

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