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Re: ipsec vs. firewalls



Damien,

It's an old battle, and Steve and I are used to sparring over it in a
friendly fashion.

Firewalls are useful as temporary stopgaps when you're actually under
attack, but they try to do what can only be done properly on an
end-to-end basis. And to the extent that they give people a false sense
of security, firewalls actually diminish security.

Steve and his co-author Bill Cheswick refer to this as the "hard
exterior with a chewy interior" property of many firewalled networks.

Phil





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