Re: too many INVALID packets

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thursday 2008-06-19 12:50, Jan Engelhardt wrote:
>>>
>>> Yes, it's a (well known) feature of netfilter. This way we can catch up
>>> connections already established. If you do not want to support it, use
>>> the last rule you wrote.
>>
>>I thought it might be useful to block some weird portscans (e.g. nmap xmas 
>>scan).
>
>Xmas scans can be matched much more easily - using INVALID, see
>http://jengelh.medozas.de/projects/chaostables/
Correction, http://jengelh.medozas.de/documents/Chaostables.pdf
chapter 2.
--
To unsubscribe from this list: send the line "unsubscribe netfilter" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Netfilter Development]     [Linux Kernel Networking Development]     [Netem]     [Berkeley Packet Filter]     [Linux Kernel Development]     [Advanced Routing & Traffice Control]     [Bugtraq]

  Powered by Linux