Count number of connections from on source

Joe, I was hoping you could help Jack and I out on this one. No one has accepted the challenge on this one? We just want to be able to count the number of concurrent connections for each source ip address. Once a threshold is reached (connections), we want to be able to log the offending ip address and to display how many cc connections it has. We really need some help with this one. Thanks, Rusty Hale