I have noticed, while using outpost firewall that under attack detection my computer gets alot of connection requests. Usualy one about every 2 minutes rangin from many different ip address. Usualy I'll get along streak from the same IP address and then it changes to something else.

Now what I want to know is what this may be? Also I will give you the specific ports they are trying to access. They try to access a wide range of ports also. Most are in the mid 1000's, but here are the most recent ones.

tcp(1938)
tcp(1859)
tcp(1433)
tcp(2036)
tcp(2040)
tcp(2056)
icmp(2048)
udp(5882)
tcp(6346)

now this is all from the last two hours or so and I still have about 100 more listed. But they are mostly repeating ports. They are all asking for connection requests. I also noticed the other day getting a ping request from the same ip address that was also asking for a connection request. And the other night I received two nuke attacks.

first off can someone explain to be the difference between the TCP,ICMP,UDP? Second explain to me one reason I may be receiving these attacks(if thats what they truely are). Third explain to me what type of ports these general are.

Thank's

-Data