Indeed, "thebiz.net" is my ISP. However, my interest was in specifically understanding the phrases "Unrecognized access" and (I think there was a) "Unexpected access".
I previously saw "Unauthorized access" messages in the system log, which someone a few months ago explained to me was, in fact, a hacking attempt that the router firewall functionality successfully foiled.
Also, I haven't seen the "(prot=11)" part of the message before either.
In a couple cases, I entered the IP addresses I didn't recognize in my web browser, looking for a web site, but generally got a 404 error in response.
Once or twice I even did a
ping <addr> -l 65500 -n 10000, just to see what would happen, but I haven't had any FBI agents blasting down my door, yet <g>.
Any more details on the interpretation of the Barricade router system log messages would be most appreciated.