| 6120 | Extensible Messaging and Presence Protocol (XMPP): CoreP. Saint-Andre | Proposed Standard | March 2011 |
| 5801 | Using Generic Security Service Application Program Interface (GSS-API) Mechanisms in Simple Authentication and Security Layer (SASL): The GS2 Mechanism FamilyS. Josefsson, N. Williams | Proposed Standard | July 2010 |
| 4949 | Internet Security Glossary, Version 2R. Shirey | Informational | August 2007 |
| 4752 | The Kerberos V5 ("GSSAPI") Simple Authentication and Security Layer (SASL) MechanismA. Melnikov, Ed. | Proposed Standard | November 2006 |
| 4422 | Simple Authentication and Security Layer (SASL)A. Melnikov, Ed., K. Zeilenga, Ed. | Proposed Standard | June 2006 |
| 4370 | Lightweight Directory Access Protocol (LDAP) Proxied Authorization ControlR. Weltman | Proposed Standard | February 2006 |
| 4324 | Calendar Access Protocol (CAP)D. Royer, G. Babics, S. Mansour | Experimental | December 2005 |
| 4217 | Securing FTP with TLSP. Ford-Hutchinson | Proposed Standard | October 2005 |
| 3920 | Extensible Messaging and Presence Protocol (XMPP): CoreP. Saint-Andre, Ed. · obsoleted by RFC 6120 | Proposed Standard | October 2004 |
| 3829 | Lightweight Directory Access Protocol (LDAP) Authorization Identity Request and Response ControlsR. Weltman, M. Smith, M. Wahl | Informational | July 2004 |
| 3792 | Survey of IPv4 Addresses in Currently Deployed IETF Security Area Standards Track and Experimental DocumentsP. Nesser, II, A. Bergstrom, Ed. | Informational | June 2004 |
| 3767 | Securely Available Credentials ProtocolS. Farrell, Ed. | Proposed Standard | June 2004 |
| 3656 | The Mailbox Update (MUPDATE) Distributed Mailbox Database ProtocolR. Siemborski | Experimental | December 2003 |
| 3631 | Security Mechanisms for the InternetS. Bellovin, Ed., J. Schiller, Ed., C. Kaufman, Ed. | Informational | December 2003 |
| 3552 | Guidelines for Writing RFC Text on Security ConsiderationsE. Rescorla, B. Korver | Best Current Practice | July 2003 |
| 3501 | INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1M. Crispin · obsoleted by RFC 9051 | Proposed Standard | March 2003 |
| 3383 | Internet Assigned Numbers Authority (IANA) Considerations for the Lightweight Directory Access Protocol (LDAP)K. Zeilenga · obsoleted by RFC 4520 | Best Current Practice | September 2002 |
| 3365 | Strong Security Requirements for Internet Engineering Task Force Standard ProtocolsJ. Schiller | Best Current Practice | August 2002 |
| 3207 | SMTP Service Extension for Secure SMTP over Transport Layer SecurityP. Hoffman | Proposed Standard | February 2002 |
| 3205 | On the use of HTTP as a SubstrateK. Moore · obsoleted by RFC 9205 | Best Current Practice | February 2002 |
| 3163 | ISO/IEC 9798-3 Authentication SASL MechanismR. Zuccherato, M. Nystrom | Experimental | August 2001 |
| 3117 | On the Design of Application ProtocolsM. Rose | Informational | November 2001 |
| 3080 | The Blocks Extensible Exchange Protocol CoreM. Rose | Proposed Standard | March 2001 |
| 3062 | LDAP Password Modify Extended OperationK. Zeilenga | Proposed Standard | February 2001 |
| 2831 | Using Digest Authentication as a SASL MechanismP. Leach, C. Newman · obsoleted by RFC 6331 | Historic | May 2000 |
| 2830 | Lightweight Directory Access Protocol (v3): Extension for Transport Layer SecurityJ. Hodges, R. Morgan, M. Wahl · obsoleted by RFC 4510, RFC 4511, RFC 4513 | Proposed Standard | May 2000 |
| 2828 | Internet Security GlossaryR. Shirey · obsoleted by RFC 4949 | Informational | May 2000 |
| 2808 | The SecurID(r) SASL MechanismM. Nystrom | Informational | April 2000 |
| 2645 | ON-DEMAND MAIL RELAY (ODMR) SMTP with Dynamic IP AddressesR. Gellens | Proposed Standard | August 1999 |
| 2636 | Wireless Device Configuration (OTASP/OTAPA) via ACAPR. Gellens | Informational | July 1999 |
| 2624 | NFS Version 4 Design ConsiderationsS. Shepler | Informational | June 1999 |
| 2609 | Service Templates and Service: SchemesE. Guttman, C. Perkins, J. Kempf | Proposed Standard | June 1999 |
| 2604 | Wireless Device Configuration (OTASP/OTAPA) via ACAPR. Gellens · obsoleted by RFC 2636 | Informational | June 1999 |
| 2595 | Using TLS with IMAP, POP3 and ACAPC. Newman | Proposed Standard | June 1999 |
| 2554 | SMTP Service Extension for AuthenticationJ. Myers · obsoleted by RFC 4954 | Proposed Standard | March 1999 |
| 2487 | SMTP Service Extension for Secure SMTP over TLSP. Hoffman · obsoleted by RFC 3207 | Proposed Standard | January 1999 |
| 2449 | POP3 Extension MechanismR. Gellens, C. Newman, L. Lundblade | Proposed Standard | November 1998 |
| 2444 | The One-Time-Password SASL MechanismC. Newman | Proposed Standard | October 1998 |
| 2384 | POP URL SchemeR. Gellens | Proposed Standard | August 1998 |
| 2251 | Lightweight Directory Access Protocol (v3)M. Wahl, T. Howes, S. Kille · obsoleted by RFC 4510, RFC 4511, RFC 4512, RFC 4513 | Proposed Standard | December 1997 |
| 2245 | Anonymous SASL MechanismC. Newman · obsoleted by RFC 4505 | Proposed Standard | November 1997 |
| 2244 | ACAP -- Application Configuration Access ProtocolC. Newman, J. G. Myers | Proposed Standard | November 1997 |
| 2229 | A Dictionary Server ProtocolR. Faith, B. Martin | Informational | October 1997 |