Ethereal

Re: [Ethereal-users] Capture Filter with multiple exclusions?
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Ethereal-users: September 2002


At 02:24 am 09/08/2002, Guy Harris wrote:
> 2) How long (how big) can I reasonably let Ethereal run in Capture
> mode if I don't specify a max value? Can it write a file in progress

That's all it does - Ethereal has no in-memory buffer that it fills up
with captured data (other than the buffer used by the "standard I/O"
library it uses to write to files, but when that fills, the I/O library
just writes stuff out and empties the buffer).

While that is true, Ethereal will attempt to display the packets, either during the capture if "Update list of packets in real time" is checked or if it is not checked at the end of the capture. At least on Win2K if there are a large number of packets Ethereal will either take so long to finish displaying the packets that it has to be aborted, or it will run out of memory.




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