Notifying the infected?

Several times every hour my firewall announces a port scan. Usually when I check the IP it is local to my own internet provider. I'm supposing these are infected machines which are trying to spread their disease? This makes me wonder if some sort of warning message could be sent back to such a machine? Is that possible? Has that ever been done by a product?

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Posted 5 years ago by Davej in Networking Firewalls

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