Type Description Reference
0 Reserved RFC 3748
1 Identify RFC 3748
2 Notification RFC 3748
3 NAK (Response Only) RFC 3748
4 MD5-Challenge RFC 3748
5 OTP, One Time Password RFC 2289RFC 3748
6 GTC, Generic Token Card RFC 3748
7 Allocated
8 Allocated
9 RSA Public Key Authentication RFC-draft-ietf-pppext-eaprsa-04.txt
10 RSA Public Key Authentication RFC-draft-ietf-pppext-eapdss-01.txtNIST FIPS PUB 196
11 KEA RFC-draft-ietf-pppext-eapkea-01.txt
12 KEA-VALIDATE RFC-draft-ietf-pppext-eapkea-01.txt
13 EAP-TLS Authentication Protocol RFC 5216
14 Quest Defender Token
15 RSA Security SecurID EAP RFC-draft-josefsson-eap-securid-01.txt
16 Arcot System EAP
17 Cisco-LEAP
18 EAP-SIM, GSM Subscriber Identity Modules RFC 4186
19 SRP-SHA-1 Part 1 RFC-draft-ietf-pppext-eap-srp-03.txt
20 SRP-SHA-1 Part 2 RFC-draft-ietf-pppext-eap-srp-01.txt
21 EAP-TTLS, EAP Tunneled TLS Authentication Protocol RFC 5281
22 Remote Access Service
23 EAP-AKA, EAP method for 3rd Generation Authentication and Key Agreement RFC 4187
24 EAP-3Com Wireless
25 PEAP, Protected EAP RFC-draft-josefsson-pppext-eap-tls-eap-06.txt
26 MS-EAP-Authentication (EAP/MS-CHAPv2) RFC-draft-kamath-pppext-eap-mschapv2-02.txt
27 EAP-MAKE, Mutual Authentication w/Key Exchange RFC-draft-berrendo-chabanne-pppext-eapmake-01.txt
28 CRYPTOCard
29 PEAPv0/EAP-MSCHAPv2 RFC-draft-dpotter-pppext-eap-mschap-01.txt
30 DynamID
31 Rob EAP
32 EAP-POTP, Protected One Time Password RFC 4793
33 MS-Authentication-TLV RFC-draft-hiller-eap-tlv-01.txt
34 SentriNET
35 EAP-Actiontec Wireless
36 Cogent Systems Biometrics Authentication EAP
37 AirFortress EAP
38 EAP-HTTP Digest
39 SecureSuite EAP
40 DeviceConnect EAP
41 EAP-SPEKE
42 EAP-MOBAC
43 EAP-FAST, EAP Flexible Authentication via Secure Tunneling RFC 4851RFC 5421RFC 5422
44 ZLXEAP, ZoneLabs EAP
45 EAP-Link
46 EAP-PAX, EAP Password Authentication eXchange RFC 4746
47 EAP-PSK, EAP Pre-Shared Authentication and Key Establishment RFC 4764
48 EAP-SAKE, EAP Shared-secret Authentication and Key Establishment RFC 4763
49 EAP-IKEv2 RFC 5106
50 EAP-AKA, Improved EAP method for 3rd Generation Authentication and Key Agreement RFC-draft-arkko-eap-aka-kdf-10.txt
51 EAP-GPSK, EAP Generalized Pre-Shared Key RFC 5433
52-191 Available via review by designated expert RFC 3748
192-253 Reserved for allocation via standards action RFC 3748
254 Expanded Type RFC 3748
255 Experimental RFC 3748