Host based firewalls are fine and dandy, but I'd rather turn off services I don't need than to just block them. Host based firewalls are sort of a bandage, and while they can be useful for knowing what is connecting out (see egress filtering), it's better just not to have unneeded network services running in the first place. This video can be seen as a supplement to my article "What can you find out from an IP?"  

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