[newbie] Outside's access to port 6881

[Ricardo Rodriguez]

Here's my concern.  I understand Auzureus uses port 6881 but I think it should be availabe for access while my Azureus client is executing.

I have stoped the program, not only that, but also have boot from my linux partition and my IP address is showing extremely high activity from my computer.  I completely blocked external access to my IP and my firewall shows blocked activity from so many IP's to my external IP going to port UDP 6881.

I'm I supposed to feel threated for becuase I used Azureus in the past?

I have checked some incomming IP's and seem to be ISP (I assume this because whois showed my IP ranges comprised for those IPs) with no aditional information.

Some of these IP's belong to:
ADSL-216-244-254-226.capfed1.uolsinectis.com.ar - 'ar' for Argentina
p57893882.dip0.t-ipconnect.de - 'de' for Germany
dslb-084-061-051-117.pools.arcor-ip.net
snat-ke-02.antik.sk - no clue (SothKorea?)

etc, etc.

All this is targeting my 6881 in a rate of hundreds hits per minute.

Is this a normail behavior? I'm I under some kind of attack?