RADIUS Attribute - NAS-Port-Type
- Kelli Higdon
As Per RFC 2865
This Attribute indicates the type of the physical port of the NAS which is authenticating the user. Â It can be used instead of or in addition to the NAS-Port (5) attribute. Â It is only used in Access-Request packets. Â Either NAS-Port (5) or NAS-Port-Type or both SHOULD be present in an Access-Request packet, if the NAS differentiates among its ports.
A summary of the NAS-Port-Type Attribute format is shown below. Â The fields are transmitted from left to right.
Type (IETF Number) = 61 for NAS-Port-Type.
Length = 6
Value = The Value field is four octets. Â "Virtual" refers to a connection to the NAS via some transport protocol, instead of through a physical port. Â For example, if a user telnetted into a NAS to authenticate himself as an Outbound-User, the Access-Request might include NAS-Port-Type = Virtual as a hint to the RADIUS server that the user was not on a physical port.
 |  |
0 | Async |
1 | Sync |
2 | ISDN Sync |
3 | ISDN Async V.120 |
4 | ISDN Async V.110 |
5 | Virtual |
6 | PIAFS |
7 | HDLC Clear Channel |
8 | X.25 |
9 | X.75 |
10 | G.3 Fax |
11 | SDSL - Symmetric DSL |
12 | ADSL-CAP - Asymmetric DSL, Carrierless Amplitude Phase Modulation |
13 | ADSL-DMT - Asymmetric DSL, Discrete Multi-Tone |
14 | IDSL - ISDN Digital Subscriber Line |
15 | Ethernet |
16 | xDSL - Digital Subscriber Line of unknown type |
17 | Cable |
18 | Wireless - Other |
19 | Wireless - IEEE 802.11 |
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PIAFS is a form of wireless ISDN commonly used in Japan, and stands for PHS (Personal Handyphone System) Internet Access Forum Standard (PIAFS).
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