Re: How many firewalls & what IS one?

[zbo @ netcom . com (James A. Shankland)]

Steve Bellovin writes:

> We defined a firewall as a collection of components placed
> between two networks that collectively have the following
> properties:
> 
> *	All traffic from inside to outside, and vice-versa, must pass
> 	through the firewall.
> *	Only authorized traffic, as defined locally, may pass.
> *	The firewall itself is immune to attack.
                               ^^^^^^

	"Ah, but a man's reach should exceed his grasp,
	 Or what's a heaven for?"

		R. Browning