Quote:
Originally posted by krygny
Any firewall/router should protect you from this type of scan without selectively blocking ports.
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Most typical home linksys type routers will block a port scan because 99% of people with a linksys router are using NAT. The router will receive a packet directly to it and not to 1 of machines in the packet allocation table. Then the router will just ignore the packet. So yes in that case a router will work.
At my office with our big router, having some machines on a NAT and others having static IP's, it will send the packet straight on to the machine. That is why blocking ports is always good. Plus there are ways past routers with open ports so why take the chance.