Chris,
> Given the relatively limited amount of space for /var, and
> that I would like to see what's going on while I'm in the
> office and during the weekends (when I suspect these
> infections to be taking place), I would like to tell ethereal
> to send me an email containing the capture file every time
> that file reaches about 4M or so. Can this be done, and if
> so, could someone point me to the resource or do some 'hand
> holding'?
You can capture only 4M at a time using the filesize option with tethereal
tethereal -a filesize:4000 -w trace.cap
To get the STDERR info as well
tethereal -a filesize:4000 -w trace.cap 2>&1 info.txt
Write an script to email the response. To do this in perl see:
perldoc -q attachment
You want to restart every 4MB, so you need another perl (or bash) script:
while(1){
system('./run_4MBtethereal.sh');
# Note the & at the end of this system call.
# You don't want to wait for the email to finish before
# tethereal is restarted
system('./email_4MB_file.sh trace.cap info.txt &');
}
HTH
Alistair
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