Broadband routers and hardware firewalls aren't just for those with bottomless wallets anymore. You can get a good little router for about $100 USD now. It depeneds on how much you want to spend as to how good the event logging will be, but there are decent models with good support.
One model you might look for is the Linksys BEFSX41. In a review I read the reviewer said it stopped every attack they threw at it and logged events better than some $1,000+ router/hardware firewall systems they'd tested. If you're interested in knowing a little more about it go to:
www.linksys.com.sg