Managing RADIUS

User Access to the Access Server

The primary way to define a user’s type of access is to use the RADIUS server attribute called “User-Service-Type”. The following table shows User-Service-Type values that the access server supports:

Value

Description

 

 

Login

LAT/TELNET, depending on the Login-Service

 

attribute or DEFAULT PROTOCOL value in PORT.

Framed

PPP/SLIP, depending on the Framed-Protocol

 

attribute or DEFAULT PROTOCOL value in PORT.

Callback-Login

User is first called back, then gets login.

Callback-Framed

PPP/SLIP user is first called back.

Administrative-User

NAS prompt with automatic privilege.

NAS-Prompt

Access server’s command or menu prompt.

Callback-NAS-Prompt

Callback first, then NAS prompt.

 

 

Setting User Permissions

Permissions are explicitly given by the authorizations that were in the user-name entry in the RADIUS server’s authentication entry. When any attributes that may be appropriate are missing, an attempt is made to find a specified value in the realm defaults. When these are still missing, the port configuration can supply its specified values (for attributes having a corresponding representation in the port).

Permissions are from a DIGITAL vendor-specific RADIUS attribute. The following is a list of RADUIS permissions:

DIALOUT NODIALOUT

LATNOLAT

TELNETNOTELNET

SLIPNOSLIP

PPPNOPPP

PRIVILEGED

NOPRIVILEGED (level of DECSERVER command

For each of the these attributes, the default is NOxxx or DISABLED.

22-16 Managing Access Server Security