Scans on port 17107

First off, I'm on dialup. Often I see from my firewall log reports a
large rash of hits on some given port.

Yesterday, over a course of about 3 minutes, my firewall logged 1366 hits
on port 17107. This occurred immediately after connecting, and from 1255
different sources. Some were TCP and others UDP. Of course there may
have been many more - don't know if there was a "limit" hiding it or not..

I'm thinking that these are residual connections from the previous user of
whatever address I got. Would this be correct?

I tried to do a Google search on port 17107 but couldn't find anything,
and I don't have anything in /etc/services or another listing of ports
that I have.