RADIUS

Name

Service-Type

Synopsis

Attribute Number	6
Length	6
Value	ENUM
Allowed in	Access-Accept, Access-Request
Prohibited in	Access-Reject, Access-Challenge
Presence in Packet	Not required
Maximum Iterations	1

This attribute describes the type of network service that is offered by the RADIUS client gear to the service consumer. The value, a four-octet enumerated integer, works in conjunction with other attributes present in the Access-Request and Access-Accept packets to define and further qualify an offered service. There are 11 specific values appropriate for this attribute, which are listed in Table 3-6.

Table 3-6. Service-Type attribute values

Value	Service type
1	Login
2	Framed
3	Callback Login
4	Callback Framed
5	Outbound
6	Administrative
7	NAS Prompt
8	Authenticate Only
9	Callback NAS Prompt
10	Call Check
11	Callback Administrative

In the following section, I’ll step through each of these predefined service types and discuss their functions within the client transaction.

Login

This value allows the user to have terminal login service. Several standard attributes can be used to further define and enhance the service offered to the user, and these values as well as authentication can be passed using an automated dial-up client rather than sitting at a virtual terminal screen.

Framed

This value indicates that the connection will use a frame protocol such as PPP or SLIP, and each of these protocols will likely require further definition ...