in via or in recv

[Sten Daniel Sørsdal]

vladone wrote:
> Hi!
> What is difference between:
>   1. in via - in recv
>   2. out via - out xmit
> When need to use an variant or another?
> 

via fxp0
will match a packet either coming in or going out on fxp0.

in via fxp0
will match a packet on the way in and comes in on fxp0.

out via fxp0
will match a packet on the way out and if the packet previously came in
on fxp0 or is now exitting fxp0.

recv fxp0
will match a packet that was received on fxp0

xmit fxp0
will match a packet that is exitting fxp0.

Use recv and xmit, via can be very misleading (imho).

"via fxp0" can also be written "{ recv fxp0 or xmit fxp0 }".
in/out has no relations to "via" as they are independant options.

-- 
Sten Daniel Sørsdal