| 5412 | Lightweight Access Point ProtocolP. Calhoun, R. Suri, N. Cam-Winget, M. Williams, S. Hares, B. O'Hara, S. Kelly | Historic | February 2010 |
| 4650 | HMAC-Authenticated Diffie-Hellman for Multimedia Internet KEYing (MIKEY)M. Euchner | Proposed Standard | September 2006 |
| 4568 | Session Description Protocol (SDP) Security Descriptions for Media StreamsF. Andreasen, M. Baugher, D. Wing | Proposed Standard | July 2006 |
| 4460 | Stream Control Transmission Protocol (SCTP) Specification Errata and IssuesR. Stewart, I. Arias-Rodriguez, K. Poon, A. Caro, M. Tuexen · obsoleted by RFC 9260 | Informational | April 2006 |
| 4271 | A Border Gateway Protocol 4 (BGP-4)Y. Rekhter, Ed., T. Li, Ed., S. Hares, Ed. | Draft Standard | January 2006 |
| 4122 | A Universally Unique IDentifier (UUID) URN NamespaceP. Leach, M. Mealling, R. Salz · obsoleted by RFC 9562 | Proposed Standard | July 2005 |
| 4086 | Randomness Requirements for SecurityD. Eastlake 3rd, J. Schiller, S. Crocker | Best Current Practice | June 2005 |
| 4056 | Use of the RSASSA-PSS Signature Algorithm in Cryptographic Message Syntax (CMS)J. Schaad | Proposed Standard | June 2005 |
| 4055 | Additional Algorithms and Identifiers for RSA Cryptography for use in the Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) ProfileJ. Schaad, B. Kaliski, R. Housley | Proposed Standard | June 2005 |
| 3972 | Cryptographically Generated Addresses (CGA)T. Aura | Proposed Standard | March 2005 |
| 3957 | Authentication, Authorization, and Accounting (AAA) Registration Keys for Mobile IPv4C. Perkins, P. Calhoun | Proposed Standard | March 2005 |
| 3931 | Layer Two Tunneling Protocol - Version 3 (L2TPv3)J. Lau, Ed., M. Townsley, Ed., I. Goyret, Ed. | Proposed Standard | March 2005 |
| 3920 | Extensible Messaging and Presence Protocol (XMPP): CoreP. Saint-Andre, Ed. · obsoleted by RFC 6120 | Proposed Standard | October 2004 |
| 3852 | Cryptographic Message Syntax (CMS)R. Housley · obsoleted by RFC 5652 | Proposed Standard | July 2004 |
| 3851 | Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 3.1 Message SpecificationB. Ramsdell, Ed. · obsoleted by RFC 5751 | Proposed Standard | July 2004 |
| 3830 | MIKEY: Multimedia Internet KEYingJ. Arkko, E. Carrara, F. Lindholm, M. Naslund, K. Norrman | Proposed Standard | August 2004 |
| 3821 | Fibre Channel Over TCP/IP (FCIP)M. Rajagopal, E. Rodriguez, R. Weber | Proposed Standard | July 2004 |
| 3819 | Advice for Internet Subnetwork DesignersP. Karn, Ed., C. Bormann, G. Fairhurst, D. Grossman, R. Ludwig, J. Mahdavi, G. Montenegro, J. Touch, L. Wood | Best Current Practice | July 2004 |
| 3797 | Publicly Verifiable Nominations Committee (NomCom) Random SelectionD. Eastlake 3rd | Informational | June 2004 |
| 3775 | Mobility Support in IPv6D. Johnson, C. Perkins, J. Arkko · obsoleted by RFC 6275 | Proposed Standard | June 2004 |
| 3766 | Determining Strengths For Public Keys Used For Exchanging Symmetric KeysH. Orman, P. Hoffman | Best Current Practice | April 2004 |
| 3748 | Extensible Authentication Protocol (EAP)B. Aboba, L. Blunk, J. Vollbrecht, J. Carlson, H. Levkowetz, Ed. | Proposed Standard | June 2004 |
| 3711 | The Secure Real-time Transport Protocol (SRTP)M. Baugher, D. McGrew, M. Naslund, E. Carrara, K. Norrman | Proposed Standard | March 2004 |
| 3697 | IPv6 Flow Label SpecificationJ. Rajahalme, A. Conta, B. Carpenter, S. Deering · obsoleted by RFC 6437 | Proposed Standard | March 2004 |
| 3631 | Security Mechanisms for the InternetS. Bellovin, Ed., J. Schiller, Ed., C. Kaufman, Ed. | Informational | December 2003 |
| 3565 | Use of the Advanced Encryption Standard (AES) Encryption Algorithm in Cryptographic Message Syntax (CMS)J. Schaad | Proposed Standard | July 2003 |
| 3562 | Key Management Considerations for the TCP MD5 Signature OptionM. Leech | Informational | July 2003 |
| 3560 | Use of the RSAES-OAEP Key Transport Algorithm in Cryptographic Message Syntax (CMS)R. Housley | Proposed Standard | July 2003 |
| 3550 | RTP: A Transport Protocol for Real-Time ApplicationsH. Schulzrinne, S. Casner, R. Frederick, V. Jacobson | Internet Standard | July 2003 |
| 3539 | Authentication, Authorization and Accounting (AAA) Transport ProfileB. Aboba, J. Wood | Proposed Standard | June 2003 |
| 3537 | Wrapping a Hashed Message Authentication Code (HMAC) key with a Triple-Data Encryption Standard (DES) Key or an Advanced Encryption Standard (AES) KeyJ. Schaad, R. Housley | Proposed Standard | May 2003 |
| 3514 | The Security Flag in the IPv4 HeaderS. Bellovin | Informational | 1 April 2003 |
| 3370 | Cryptographic Message Syntax (CMS) AlgorithmsR. Housley | Proposed Standard | September 2002 |
| 3369 | Cryptographic Message Syntax (CMS)R. Housley · obsoleted by RFC 3852 | Proposed Standard | September 2002 |
| 3344 | IP Mobility Support for IPv4C. Perkins, Ed. · obsoleted by RFC 5944 | Proposed Standard | August 2002 |
| 3307 | Allocation Guidelines for IPv6 Multicast AddressesB. Haberman | Proposed Standard | September 2002 |
| 3261 | SIP: Session Initiation ProtocolJ. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J. Peterson, R. Sparks, M. Handley, E. Schooler | Proposed Standard | July 2002 |
| 3257 | Stream Control Transmission Protocol Applicability StatementL. Coene | Informational | April 2002 |
| 3220 | IP Mobility Support for IPv4C. Perkins, Ed. · obsoleted by RFC 3344 | Proposed Standard | January 2002 |
| 3217 | Triple-DES and RC2 Key WrappingR. Housley | Informational | December 2001 |
| 3174 | US Secure Hash Algorithm 1 (SHA1)D. Eastlake 3rd, P. Jones | Informational | September 2001 |
| 3041 | Privacy Extensions for Stateless Address Autoconfiguration in IPv6T. Narten, R. Draves · obsoleted by RFC 4941 | Proposed Standard | January 2001 |
| 3012 | Mobile IPv4 Challenge/Response ExtensionsC. Perkins, P. Calhoun · obsoleted by RFC 4721 | Proposed Standard | November 2000 |
| 2960 | Stream Control Transmission ProtocolR. Stewart, Q. Xie, K. Morneault, C. Sharp, H. Schwarzbauer, T. Taylor, I. Rytina, M. Kalla, L. Zhang, V. Paxson · obsoleted by RFC 4960 | Proposed Standard | October 2000 |
| 2951 | TELNET Authentication Using KEA and SKIPJACKR. Housley, T. Horting, P. Yee | Informational | September 2000 |
| 2943 | TELNET Authentication Using DSAR. Housley, T. Horting, P. Yee | Proposed Standard | September 2000 |
| 2930 | Secret Key Establishment for DNS (TKEY RR)D. Eastlake 3rd | Proposed Standard | September 2000 |
| 2919 | List-Id: A Structured Field and Namespace for the Identification of Mailing ListsR. Chandhok, G. Wenger | Proposed Standard | March 2001 |
| 2857 | The Use of HMAC-RIPEMD-160-96 within ESP and AHA. Keromytis, N. Provos | Proposed Standard | June 2000 |
| 2848 | The PINT Service Protocol: Extensions to SIP and SDP for IP Access to Telephone Call ServicesS. Petrack, L. Conroy | Proposed Standard | June 2000 |
| 2845 | Secret Key Transaction Authentication for DNS (TSIG)P. Vixie, O. Gudmundsson, D. Eastlake 3rd, B. Wellington · obsoleted by RFC 8945 | Proposed Standard | May 2000 |
| 2828 | Internet Security GlossaryR. Shirey · obsoleted by RFC 4949 | Informational | May 2000 |
| 2786 | Diffie-Helman USM Key Management Information Base and Textual ConventionM. St. Johns | Experimental | March 2000 |
| 2777 | Publicly Verifiable Nomcom Random SelectionD. Eastlake 3rd · obsoleted by RFC 3797 | Informational | February 2000 |
| 2759 | Microsoft PPP CHAP Extensions, Version 2G. Zorn | Informational | January 2000 |
| 2633 | S/MIME Version 3 Message SpecificationB. Ramsdell, Ed. · obsoleted by RFC 3851 | Proposed Standard | June 1999 |
| 2630 | Cryptographic Message SyntaxR. Housley · obsoleted by RFC 3369, RFC 3370 | Proposed Standard | June 1999 |
| 2543 | SIP: Session Initiation ProtocolM. Handley, H. Schulzrinne, E. Schooler, J. Rosenberg · obsoleted by RFC 3261, RFC 3262, RFC 3263, RFC 3264, RFC 3265 | Proposed Standard | March 1999 |
| 2541 | DNS Security Operational ConsiderationsD. Eastlake 3rd · obsoleted by RFC 4641 | Informational | March 1999 |
| 2536 | DSA KEYs and SIGs in the Domain Name System (DNS)D. Eastlake 3rd | Proposed Standard | March 1999 |
| 2522 | Photuris: Session-Key Management ProtocolP. Karn, W. Simpson | Experimental | March 1999 |
| 2440 | OpenPGP Message FormatJ. Callas, L. Donnerhacke, H. Finney, R. Thayer · obsoleted by RFC 4880 | Proposed Standard | November 1998 |
| 2433 | Microsoft PPP CHAP ExtensionsG. Zorn, S. Cobb | Informational | October 1998 |
| 2412 | The OAKLEY Key Determination ProtocolH. Orman | Informational | November 1998 |
| 2411 | IP Security Document RoadmapR. Thayer, N. Doraswamy, R. Glenn · obsoleted by RFC 6071 | Informational | November 1998 |
| 2405 | The ESP DES-CBC Cipher Algorithm With Explicit IVC. Madson, N. Doraswamy | Proposed Standard | November 1998 |
| 2065 | Domain Name System Security ExtensionsD. Eastlake 3rd, C. Kaufman · obsoleted by RFC 2535 | Proposed Standard | January 1997 |
| 2002 | IP Mobility SupportC. Perkins, Ed. · obsoleted by RFC 3220 | Proposed Standard | October 1996 |
| 1948 | Defending Against Sequence Number AttacksS. Bellovin · obsoleted by RFC 6528 | Informational | May 1996 |
| 1889 | RTP: A Transport Protocol for Real-Time ApplicationsAudio-Video Transport Working Group, H. Schulzrinne, S. Casner, R. Frederick, V. Jacobson · obsoleted by RFC 3550 | Proposed Standard | January 1996 |