>He was able to logon onto port 21 (blocked by cable provider) !
>
>Could anyone please give me an explanation for this, and could someone
tell
>me what (legal) action i can take against him/her (i know i had anonymous
>ftp on .. but port 21 should have been blocked)
Simple. According to the traceroute, both addresses mentioned are on the
pandora.be net, which I would assume is the cable modem ISP. They
block <1024, but are only able to do so at their border. Most cable modems
are
pretty simple, and aren't about to do packet filtering for each user.
That means, every one of your ports is open to every one of the users
on the same ISP as you. Since you are running an FTP server, and he
was able to login in as anonymous, I would say that you were intentionally
offering a "public" service that he used, and you have no legal recourse.
Ryan
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