Re: :8 -> :0

[tgarris () FRAMELOSS ORG (Frameloss, Frameloss)]

type 0 == echo request
type 8 == echo reply

These most likely originated from the ping utility (or from tracert on a windoze box...)

I seriously wouldn't be worried about these messages, especially if you are providing some type of service through your 
firewall - ie www.  The occasional ping is a fact of life on the internet.  Some ISPs (Intermedia/Digex for example) 
will actually ping scan the subnets they provide to their customers (mainly teir 2 ISPs) to ensure that they are 
meeting the minimal usage amounts for addressing space.