Strange connect attempts

[Benjamin Walkenhorst]

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Hello everybody,

Under FreeBSD 5.2-RELEASE on i386 I get lots of kernel messages like
this one:

Feb  7 12:38:01 neuromancer kernel: Connection attempt to UDP
127.0.0.1:512 from 127.0.0.1:49383

/etc/services has this to say on Port 512/udp:
biff            512/udp    comsat       #used by mail system to notify
users

Is there any way I can get rid of these messages? From the fact they
show up on my console, I assume port 512 is not open. Should I open it?
The machine is on a local network with me being the only user, so
security considerations aren't that important, really. =) 
On the other hand, what do I need it for? I'd rather have it just shut
up. 

Any hints? 

Thank you very much,

kind regards,

Benjamin
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