ICMP Flood Detected

[#1]

Can anyone tell me what this means please?
Internet Domain: lo0-plusnet.thn-ag3.plus.net
Internet Address: 195.166.128.80
                                                  Today                                      This Week
Total Attacks Blocked                  6                                                    6

High Risk                                    6                                                    6
ICMP Flood Detected                    6                                                    6

[#2]

From Google
ICMP FLOODS -- these floods are initiated when a user sends a huge series of data packets that directly attacks your winsock (or other dialer). The ICMP sends a series of ping packets directly to your dialer (bypassing your client program) and keeps it busy so that it isn't able to reply to server ping activity requests. The result is that the server thinks you've left and your connection eventually times out and disconnects.
You will notice abundant activity in your modem lights if someone is ICMP-flooding you. If you use a winsock dialer that has IP tracing capability enabled, your winsock will display a log of the actual ICMP flood. A shareware program called netXray is available for use in Win95 that can do the same thing (and more). Other packet sniffers are also available. For more info on using firewalls, join #ICMP or ask your service provider for information for configuring your clients to connect to a firewall on the ISP's server.

[#3]

Might I suggest the use of the Plusnet firewall which can be enabled in your member centre.

[#4]

Thanks for the responses. Sorry to have been so long in replying. The issue has not caused me a problem. The router firewall seems to have dealt with it ok but has reported it to me. I was curious to know the cause. Why does the source appear to be within Plusnet's domain?