What kind of attack is this

My firewall log is indicating many types of blocks, and many of them:

Here are the major ones:

65.163.234.48:6972 to UDP port 6970 or 6972 or 6973
199.172.144.80:80 to TCP port 21543
63.240.26.126:19530 to UDP port 137
202.100.26.139:1576 to TCP port 98
63.250.209.54:2835 to UDP port 2917
63.240.26.15:55448 to UDP port 137

What might these be, attacks or just nuisance? Thanks.

--
Colonel Blip

"Colonel Blip" <col.blip@nospambigfoot.com> wrote in message
news:9o59od$fob$1@news.grc.com...

> My firewall log is indicating many types of blocks, and many of them:
>
> Here are the major ones:
> ....
>
> What might these be, attacks or just nuisance? Thanks.

Port scans, maybe someone is trying to find a hole into Your system,
the attack (if there'll be one) will come later ...

Regards