- RFC 4401
- A Pseudo-Random Function (PRF) API Extension for the Generic Security Service Application Program Interface (GSS-API)
- RFC 4402
- A Pseudo-Random Function (PRF) for the Kerberos V Generic Security Service Application Program Interface (GSS-API) Mechanism
- RFC 4403
- Lightweight Directory Access Protocol (LDAP) Schema for Universal Description, Discovery, and Integration version 3 (UDDIv3)
- RFC 4404
- Definitions of Managed Objects for Fibre Channel Over TCP/IP (FCIP)
- RFC 4405
- SMTP Service Extension for Indicating the Responsible Submitter of an E-Mail Message
- RFC 4406
- Sender ID: Authenticating E-Mail
- RFC 4407
- Purported Responsible Address in E-Mail Messages
- RFC 4408
- Sender Policy Framework (SPF) for Authorizing Use of Domains in E-Mail, Version 1
- RFC 4410
- Selectively Reliable Multicast Protocol (SRMP)
- RFC 4411
- Extending the Session Initiation Protocol (SIP) Reason Header for Preemption Events
- RFC 4412
- Communications Resource Priority for the Session Initiation Protocol (SIP)
- RFC 4414
- An ENUM Registry Type for the Internet Registry Information Service (IRIS)
- RFC 4415
- IANA Registration for Enumservice Voice
- RFC 4416
- Goals for Internet Messaging to Support Diverse Service Environments
- RFC 4417
- Report of the 2004 IAB Messaging Workshop
- RFC 4418
- UMAC: Message Authentication Code using Universal Hashing
- RFC 4419
- Diffie-Hellman Group Exchange for the Secure Shell (SSH) Transport Layer Protocol
- RFC 4420
- Encoding of Attributes for Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) Establishment Using Resource ReserVation Protocol-Traffic Engineering (RSVP-TE)
- RFC 4421
- RTP Payload Format for Uncompressed Video: Additional Colour Sampling Modes
- RFC 4422
- Simple Authentication and Security Layer (SASL)
- RFC 4423
- Host Identity Protocol (HIP) Architecture
- RFC 4424
- Real-Time Transport Protocol (RTP) Payload Format for the Variable-Rate Multimode Wideband (VMR-WB) Extension Audio Codec
- RFC 4425
- RTP Payload Format for Video Codec 1 (VC-1)
- RFC 4426
- Generalized Multi-Protocol Label Switching (GMPLS) Recovery Functional Specification
- RFC 4427
- Recovery (Protection and Restoration) Terminology for Generalized Multi-Protocol Label Switching (GMPLS)
- RFC 4428
- Analysis of Generalized Multi-Protocol Label Switching (GMPLS)-based Recovery Mechanisms (including Protection and Restoration)
- RFC 4429
- Optimistic Duplicate Address Detection (DAD) for IPv6
- RFC 4430
- Kerberized Internet Negotiation of Keys (KINK)
- RFC 4431
- The DNSSEC Lookaside Validation (DLV) DNS Resource Record
- RFC 4432
- RSA Key Exchange for the Secure Shell (SSH) Transport Layer Protocol
- RFC 4433
- Mobile IPv4 Dynamic Home Agent (HA) Assignment
- RFC 4434
- The AES-XCBC-PRF-128 Algorithm for the Internet Key Exchange Protocol (IKE)
- RFC 4435
- A Framework for the Usage of Internet Media Guides (IMGs)
- RFC 4436
- Detecting Network Attachment in IPv4 (DNAv4)
- RFC 4437
- Web Distributed Authoring and Versioning (WebDAV) Redirect Reference Resources
- RFC 4439
- Fibre Channel Fabric Address Manager MIB
- RFC 4440
- IAB Thoughts on the Role of the Internet Research Task Force (IRTF)
- RFC 4442
- Bootstrapping Timed Efficient Stream Loss-Tolerant Authentication (TESLA)
- RFC 4443
- Internet Control Message Protocol (ICMPv6) for the Internet Protocol Version 6 (IPv6) Specification
- RFC 4444
- Management Information Base for Intermediate System to Intermediate System (IS-IS)
- RFC 4445
- A Proposed Media Delivery Index (MDI)
- RFC 4446
- IANA Allocations for Pseudowire Edge to Edge Emulation (PWE3)
- RFC 4447
- Pseudowire Setup and Maintenance Using the Label Distribution Protocol (LDP)
- RFC 4448
- Encapsulation Methods for Transport of Ethernet over MPLS Networks
- RFC 4449
- Securing Mobile IPv6 Route Optimization Using a Static Shared Key
- RFC 4450
- Getting Rid of the Cruft: Report from an Experiment in Identifying and Reclassifying Obsolete Standards Documents
- RFC 4451
- BGP MULTI_EXIT_DISC (MED) Considerations
- RFC 4452
- The "info" URI Scheme for Information Assets with Identifiers in Public Namespaces
- RFC 4453
- Requirements for Consent-Based Communications in the Session Initiation Protocol (SIP)
- RFC 4454
- Asynchronous Transfer Mode (ATM) over Layer 2 Tunneling Protocol Version 3 (L2TPv3)
- RFC 4455
- Definition of Managed Objects for Small Computer System Interface (SCSI) Entities
- RFC 4456
- BGP Route Reflection: An Alternative to Full Mesh Internal BGP (IBGP)
- RFC 4457
- The Session Initiation Protocol (SIP) P-User-Database Private-Header (P-Header)
- RFC 4458
- Session Initiation Protocol (SIP) URIs for Applications such as Voicemail and Interactive Voice Response (IVR)
- RFC 4459
- MTU and Fragmentation Issues with In-the-Network Tunneling
- RFC 4460
- Stream Control Transmission Protocol (SCTP) Specification Errata and Issues
- RFC 4461
- Signaling Requirements for Point-to-Multipoint Traffic-Engineered MPLS Label Switched Paths (LSPs)
- RFC 4462
- Generic Security Service Application Program Interface (GSS-API) Authentication and Key Exchange for the Secure Shell (SSH) Protocol
- RFC 4463
- A Media Resource Control Protocol (MRCP) Developed by Cisco, Nuance, and Speechworks
- RFC 4464
- Signaling Compression (SigComp) Users' Guide
- RFC 4465
- Signaling Compression (SigComp) Torture Tests
- RFC 4466
- Collected Extensions to IMAP4 ABNF
- RFC 4467
- Internet Message Access Protocol (IMAP) - URLAUTH Extension
- RFC 4468
- Message Submission BURL Extension
- RFC 4469
- Internet Message Access Protocol (IMAP) CATENATE Extension
- RFC 4470
- Minimally Covering NSEC Records and DNSSEC On-line Signing
- RFC 4471
- Derivation of DNS Name Predecessor and Successor
- RFC 4472
- Operational Considerations and Issues with IPv6 DNS
- RFC 4473
- Requirements for Internet Media Guides (IMGs)
- RFC 4474
- Enhancements for Authenticated Identity Management in the Session Initiation Protocol (SIP)
- RFC 4475
- Session Initiation Protocol (SIP) Torture Test Messages
- RFC 4476
- Attribute Certificate (AC) Policies Extension
- RFC 4477
- Dynamic Host Configuration Protocol (DHCP): IPv4 and IPv6 Dual-Stack Issues
- RFC 4478
- Repeated Authentication in Internet Key Exchange (IKEv2) Protocol
- RFC 4480
- RPID: Rich Presence Extensions to the Presence Information Data Format (PIDF)
- RFC 4481
- Timed Presence Extensions to the Presence Information Data Format (PIDF) to Indicate Status Information for Past and Future Time Intervals
- RFC 4482
- CIPID: Contact Information for the Presence Information Data Format
- RFC 4483
- A Mechanism for Content Indirection in Session Initiation Protocol (SIP) Messages
- RFC 4484
- Trait-Based Authorization Requirements for the Session Initiation Protocol (SIP)
- RFC 4485
- Guidelines for Authors of Extensions to the Session Initiation Protocol (SIP)
- RFC 4486
- Subcodes for BGP Cease Notification Message
- RFC 4487
- Mobile IPv6 and Firewalls: Problem Statement
- RFC 4488
- Suppression of Session Initiation Protocol (SIP) REFER Method Implicit Subscription
- RFC 4489
- A Method for Generating Link-Scoped IPv6 Multicast Addresses
- RFC 4490
- Using the GOST 28147-89, GOST R 34.11-94, GOST R 34.10-94, and GOST R 34.10-2001 Algorithms with Cryptographic Message Syntax (CMS)
- RFC 4491
- Using the GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms with the Internet X.509 Public Key Infrastructure Certificate and CRL Profile
- RFC 4492
- Elliptic Curve Cryptography (ECC) Cipher Suites for Transport Layer Security (TLS)
- RFC 4494
- The AES-CMAC-96 Algorithm and Its Use with IPsec
- RFC 4495
- A Resource Reservation Protocol (RSVP) Extension for the Reduction of Bandwidth of a Reservation Flow
- RFC 4496
- Open Pluggable Edge Services (OPES) SMTP Use Cases
- RFC 4497
- Interworking between the Session Initiation Protocol (SIP) and QSIG
- RFC 4498
- The Managed Object Aggregation MIB