On 11/9/05, berek at rz dot uni dash leipzig dot de <berek at rz dot uni dash leipzig dot de> wrote:
>
> i've set up a bunch of allow rules for the WLAN interface outbound to everywhere
> (see list below). but if i have a glance at the traffic passing the
> linksys-wlan-node, from time to time i see tcp-connections (usually with heavy
> traffic) from some of the wlan-nodes to the internet on ports that are
> definitely NOT allowed in my list. thus they normally should be blocked by the
> default blocking rule of the WLAN interface. but they pass through, as i can
> see in the output of iptraf on the linksys. the ports that were passed the last
> time were different ones between 62000 and 63000.
>
They're ephemeral ports, most likely source ports is what you're
seeing, and it has to be allowed by the state table if it isn't
allowed explicitly in your rules.
-Chris |