Path: utzoo!attcan!uunet!lll-winken!ames!pasteur!ucbvax!A.ISI.EDU!CERF
From: CERF@A.ISI.EDU
Newsgroups: comp.protocols.tcp-ip
Subject: Re: TCP/IP Security
Message-ID: <[A.ISI.EDU]15-Jan-89.14:57:12.CERF>
Date: 15 Jan 89 19:57:00 GMT
References: <207@secola.Columbia.NCR.COM>
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 9

Karen,

The TCP/IP standards allow for encryption at several levels.
At applications level (e.g. secure mail) and at any level above
IP. The gateways have to see the IP headers in the clear to
provide routing and type of service handling. TCP/IP nets are
also operated regularly with link encryption.

Vint Cerf