On 8/5/2016 3:13 PM, Karl Fife wrote:
> All of the states in the pfsense states display make sense to me:
> e.g. http://www.cs.hofstra.edu/~cscccl/c333/tcp.gif
> 
> Maybe I'm having a brain fart, but I'm not finding a good treatise on
> the "multiple:multiple" state?
> Anyone?

That "state" should only be seen with UDP and other stateless protocols.
You'll see SINGLE:NO_TRAFFIC when one side sends a single packet to the
other but has not yet received a response, and MULTIPLE:MULTIPLE when
both sides have sent multiple packets that match the state.

You can also see various combinations of these depending on the
protocol. For example you might see SINGLE:MULTIPLE from a perfectly
normal DNS request or you might see it on a partially working (or even
broken) ESP state for IPsec.

Essentially it's a counter that lets you know if 0, 1 or 2+ packets have
been observed matching the state.

Jim
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