> You should be able to use an image source in your HTML for the captive
> portal page. You could upload an image to the appropriate directory (I
> don't know where), but you would loose the image on reboots. I would
> suggest using an URL for the image source not local file pathing (i.e.
> <img src="http://<your server>/<image dir>/image.jpg"> not <img
> src="<image dir>/image.jpg">) Other wise you will lose the image on
> reboot and have to upload the image.
you then have to add the machine you have the image on to the 'allowed
connection to' part of the captive portal page
> The other option will be to build your own m0n0wall image.
yes, not handy if you need to change the image though! ;-)