[techtalk] Re: Log output (Whoops)

[jenn at simegen.com]

Kath wrote:

> Sorry, stupid Outlook has some kind of shortcut key to autosend or 
> something...
>  
> here is the log:
>  
> May 12 09:15:55 kathweb kernel: IP_MASQ:reverse ICMP: failed checksum 
> from 61.11.12.152!
> May 12 09:21:48 kathweb kernel: IP_MASQ:reverse ICMP: failed checksum 
> from 61.11.12.152!

If there's only a few, it means that there's some sort of minor
glitch between source and destination. 

If there's a lot, it *MIGHT* mean someone's trying a man-in-the-middle
attack.
    
All it really means is that some packets were bad - the checksum 
(a means of verifying packet correctness) didn't match with what
it should have been.



Jenn V.
-- 
     "Do you ever wonder if there's a whole section of geek culture
             you miss out on by being a geek?" - Dancer.

jenn at simegen.com     Jenn Vesperman     http://www.simegen.com/~jenn/