Firewall Wizards mailing list archives
RE: A fun smackdown...
From: "Ben Nagy" <ben () iagu net>
Date: Thu, 19 May 2005 15:33:22 +0200
"Be liberal in what you accept; be strict in what you send."
This was NEVER a security doctrine. It was an RFC doctrine, originally (AFAIK) from RFC 791 (cf): "In general, an implementation must be conservative in its sending behavior, and liberal in its receiving behavior." RFCs are concerned with interoperability. Security is concerned with risk. The two are not congruent. If you know anything about this history of the Internet Protocol and the RFCs < 1000 in general, you would not characterise it as security focused. This is intuitive - well at least to me and all of the 'old timers' on this list.
-----Original Message----- From: firewall-wizards-admin () honor icsalabs com
[...]
On Tue, 17 May 2005, Martin wrote:"Be liberal in what you accept; be strict in what you send."
[Paul, sensibly, rebuts ... ]
_All_ effective security controls break that tenet. The more liberal your controls, the more risk you assume. Paul
To borrow the vernacular, "w3rd." ben _______________________________________________ firewall-wizards mailing list firewall-wizards () honor icsalabs com http://honor.icsalabs.com/mailman/listinfo/firewall-wizards
Current thread:
- A fun smackdown... Marcus J. Ranum (May 13)
- Re: A fun smackdown... Joseph S D Yao (May 15)
- Re: A fun smackdown... Martin (May 17)
- Re: A fun smackdown... Paul D. Robertson (May 19)
- RE: A fun smackdown... Ben Nagy (May 19)
- Re: A fun smackdown... Chuck Swiger (May 19)
- Re: A fun smackdown... Paul D. Robertson (May 19)
- Re: A fun smackdown... Chuck Swiger (May 19)
- Re: A fun smackdown... Paul D. Robertson (May 19)
- Re: A fun smackdown... Devdas Bhagat (May 19)
- Re: A fun smackdown... Paul D. Robertson (May 19)
- Re: A fun smackdown... Marcus J. Ranum (May 20)
- Re: A fun smackdown... Chuck Swiger (May 21)
- Re: A fun smackdown... Marcus J. Ranum (May 21)
- Re: A fun smackdown... Chuck Swiger (May 21)
- Re: A fun smackdown... Martin (May 17)
- Re: A fun smackdown... Joseph S D Yao (May 15)