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Smoot Carl-Mitchell, and John Quarterman, "Building Inte rnet Firewalls," UNIX World, February 1992

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Thinking about Firewalls - Ranum (1994)   (25 citations)  (Correct)

....levels and configuration on the gateway host, it is not improbable that a vandal with a copy of the release notes for the operating system version and a login can compromise the system. Screened Host Gateways Several articles have described screened host gateways, and how to construct them [3,4]. Generally, the screened host gateway is very secure, while remaining fairly easy to implement. Typically, a bastion host is configured on the private network, with a screening router between the Internet and the private network, which only permits Internet access to the bastion host. Since the ....

Smoot Carl-Mitchell, and John Quarterman, "Building Inte rnet Firewalls," UNIX World, February 1992


A Network Firewall - Ranum (1992)   (8 citations)  (Correct)

....and stable versions are preferred. 6 6. Existing Practice, Different Approaches, and Tar Baby Several papers have been published that describe various approaches to configuring network firewalls. Most of them advocate using a commercial router that permits screening within the router [4] [5] These configurations can be made very secure, but in the event that the router is compromised, the network can be reconfigured such that the screening is disabled and the private network is completely exposed. It may take some time to detect if this occurs. Other configurations, with a ....

Smoot Carl-Mitchell, and John Quarterman, Building Internet Firewalls, UNIX World, Feb, 1992.


Thinking About Firewalls - Ranum (1994)   (25 citations)  (Correct)

....so will this threat. Screened Host Gateways Ground to which access is constricted, where the way out is tortuous, and where a small enemy force can strike my larger one is called encircled. Sun Tzu Several articles have described screened host gateways, and how to construct them[3,4]. Generally, the screened host gateway is very secure, while remaining fairly easy to implement. Typically, a bastion host is configured on the private network, with a screening router between the Internet and the private network, which only permits Internet access to the bastion host. Since the ....

Smoot Carl-Mitchell and John Quarterman, "Building Internet Firewalls," UNIX World, February 1992

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