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標 題Re: URGENT?
發信站NCTU CS FreeBSD Server (Sun Mar 23 06:33:48 2014)
轉信站ptt!csnews.cs.nctu!news.cednctu!FreeBSD.cs.nctu!.POSTED!freebsd.org!ow
On 3/22/14, 8:11 AM, RW wrote:
> On Sat, 22 Mar 2014 08:48:40 -0600
> Brett Glass wrote:
>
>> This is correct. And that's awkward, because you might not want all of
>> these checks in one place. Also, if there are many dynamic rules this
>> will slow traffic down quite a bit.
in ipfw that's up to you..
but I usually put the check-state quite early in my rule sets.
I am working on a new rc.firewall that is much more efficient.
the trouble is that the script to make it do what I want is a bit more
complicated.
I'll put it out for discussion later. maybe tonight.
> It should be the other way around. Once a flow has been learned it's
> just a simple hash-table lookup once you hit the first stateful rule.
> In pf most packets bypass the rules altogether.
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