2009 Mar 07
The original design of TCP/IP and related network technologies did not have any support for secuity designed in. The expectation was that security could be added in at the Application level using encryption and a cryptographically strong checksum. Later efforts to add security in include: the Secure Socket Layer (SSL), and Internet Protocol Security (IPSec).
| Abrev | Name | Purpose |
|---|---|---|
| PGP | Pretty Good Privacy | Created by Phil Zimmerman to encrypt and digitally sign files. A commercial version is available at www.psp.com |
| GnuPG | Gnu Privacy Guard | An open source version of the above is available at www.gnupg.org |
| S/MIME | Secure/Multipurpose Internet Mail Extension |
A standard for secure email, supported by MS Outlook and Netscape Messenger. |
| SSH | Secure SHell | For remote access to a command prompt using an encrypted session. A free open source version is available at: www.openssh.com and a commercial version at: www.ssh.com |
2005-2009