Firewall Wizards mailing list archives
Re: Air Gap vs. firewall
From: Joseph S D Yao <jsdy () cospo osis gov>
Date: Fri, 22 Sep 2000 20:29:45 -0400
On Thu, Sep 21, 2000 at 04:39:35PM +0000, a burbatsky wrote:
I am trying to get a handle on the difference between an air gap appliance and a firewall. In an article in Information Security magazine, (//www.infosecuritymag.com/july2000/coverstory.htm)the article defines the following: A firewall is the logical disconnection of two physically connected net works, while a gap is a physical disconnection of two logically connected networks. Is this semantics or is there a real difference between the two?
Logical: _____ ---------NIC|_____|NIC--------- ^Proxy servers block IP flow and initiate new connections on the other side. NO IP FLOW AT ALL between sides. Physical: _____ _____ ---------NIC|_____| floppy |_____|NIC------ -- Joe Yao jsdy () cospo osis gov - Joseph S. D. Yao COSPO/OSIS Computer Support EMT-B ----------------------------------------------------------------------- This message is not an official statement of COSPO policies. _______________________________________________ Firewall-wizards mailing list Firewall-wizards () nfr net http://www.nfr.net/mailman/listinfo/firewall-wizards
Current thread:
- Air Gap vs. firewall a burbatsky (Sep 22)
- Re: Air Gap vs. firewall Marcus J. Ranum (Sep 22)
- Re: Air Gap vs. firewall Crispin Cowan (Sep 23)
- RE: Air Gap vs. firewall Ofir Arkin (Sep 23)
- Re: Air Gap vs. firewall Joseph S D Yao (Sep 23)
- <Possible follow-ups>
- Re: Air Gap vs. firewall Steven M. Bellovin (Sep 23)
- RE: Air Gap vs. firewall David Bovee (Sep 23)
- Air Gap VS. Firewall Campbell Family (Sep 25)
- Re: Air Gap VS. Firewall Crispin Cowan (Sep 26)
- Re: Air Gap VS. Firewall Marcus J. Ranum (Sep 26)
- Re: Air Gap VS. Firewall Crispin Cowan (Sep 26)
- RE: Air Gap VS. Firewall Paz (Sep 26)