packets with syn/fin vs pf_norm.c

Jesper Wallin jesper at ifconfig.se
Sun Jul 3 21:56:48 GMT 2005


Garrett Wollman wrote:

><<On Sun, 03 Jul 2005 00:06:37 +0200, Jesper Wallin <jesper at www.hackunite.net> said:
>
>  
>
>>First of all, I know that not dropping SYN/FIN isn't really a big deal, it
>>just makes no sense. But since it doesn't make any sense, I don't see
>>the reason why not to discard them.
>>    
>>
>
>Perhaps because you are under the erroneous impression that such
>packets are nonsensical.
>
>-GAWollman
>
That might be the case yeah.. Yet, if I have TCP_DROP_SYNFIN in my 
kernel and
sysctrl net.inet.tcp.drop_synfin set to 1, shouldn't it drop all SYN/FIN 
packets no
matter how my firewall is configured?

Best regards,
Jesper Wallin


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