[clug] Blocking wierd packets...

Martijn van Oosterhout kleptog at svana.org
Wed Aug 4 03:12:27 GMT 2004

My firewall is dropping whacky packets looking like:

ip_conntrack_tcp: INVALID: Out of window data; SEQ is over the upper bound (over the window of the receiver)
ip_conntrack_tcp: INVALID: invalid TCP flag combination
ip_conntrack_tcp: INVALID: bad TCP checksum 

Should I worry about this? Seems to me dropping them is a pretty safe
thing to do in any case... Maybe the latest virus?
Martijn van Oosterhout   <kleptog at svana.org>   http://svana.org/kleptog/
> Patent. n. Genius is 5% inspiration and 95% perspiration. A patent is a
> tool for doing 5% of the work and then sitting around waiting for someone
> else to do the other 95% so you can sue them.
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