Network Working Group D. Forsberg
Request for Comments: 5191 Nokia
Category: Standards Track Y. Ohba, Ed.
Toshiba
B. Patil
H. Tschofenig
Nokia Siemens Networks
A. Yegin
Samsung
May 2008
Protocol for Carrying Authentication for Network Access (PANA)
Status of This Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Abstract
This document defines the Protocol for Carrying Authentication for
Network Access (PANA), a network-layer transport for Extensible
Authentication Protocol (EAP) to enable network access authentication
between clients and access networks. In EAP terms, PANA is a
UDP-based EAP lower layer that runs between the EAP peer and the EAP
authenticator.
Forsberg, et al. Standards Track [Page 1]
RFC 5191 PANA May 2008
Table of Contents
1. Introduction ....................................................3
1.1. Specification of Requirements ..............................4
2. Terminology .....................................................4
3. Protocol Overview ...............................................6
4. Protocol Details ................................................7
4.1. Authentication and Authorization Phase .....................7
4.2. Access Phase ..............................................11
4.3. Re-Authentication Phase ...................................11
4.4. Termination Phase .........................................13
5. Processing Rules ...............................................13
5.1. Fragmentation .............................................13
5.2. Sequence Number and Retransmission ........................14
5.3. PANA Security Association .................................15
5.4. Message Authentication ....................................17
5.5. Message Validity Check ....................................17
5.6. PaC Updating Its IP Address ...............................19
5.7. Session Lifetime ..........................................19
6. Message Format .................................................20
6.1. IP and UDP Headers ........................................20
6.2. PANA Message Header .......................................20
6.3. AVP Format ................................................22
7. PANA Messages ..................................................24
7.1. PANA-Client-Initiation (PCI) ..............................27
7.2. PANA-Auth-Request (PAR) ...................................28
7.3. PANA-Auth-Answer (PAN) ....................................28
7.4. PANA-Termination-Request (PTR) ............................28
7.5. PANA-Termination-Answer (PTA) .............................29
7.6. PANA-Notification-Request (PNR) ...........................29
7.7. PANA-Notification-Answer (PNA) ............................29
8. AVPs in PANA ...................................................29
8.1. AUTH AVP ..................................................30
8.2. EAP-Payload AVP ...........................................30
8.3. Integrity-Algorithm AVP ...................................31
8.4. Key-Id AVP ................................................31
8.5. Nonce AVP .................................................31
8.6. PRF-Algorithm AVP .........................................32
8.7. Result-Code AVP ...........................................32
8.8. Session-Lifetime AVP ......................................32
8.9. Termination-Cause AVP .....................................33
9. Retransmission Timers ..........................................33
9.1. Transmission and Retransmission Parameters ................35
10. IANA Considerations ...........................................35
10.1. PANA UDP Port Number .....................................36
10.2. PANA Message Header ......................................36
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