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Step
D. If the Secondary RADIUS Server is not available, then the modem transmits the HTTP: Access
Denied message (error page) to the User PC.
5
The RADIUS Server, upon receiving the RADIUS:Access-Req message, authenticates the user credentials
and does one of the following:
A. It transmits the RADIUS: Access-Accept message with the appropriate user access level – e.g.,
Read-only or Read/Write.
B. It transmits the RADIUS:Access-Reject message upon credential mismatch.
C. It transmits the RADIUS: Access-Challenge for further validation.
6
The CDM-425 Advanced Satellite Modem, upon receiving one of the above responses from the RADIUS
server, then does one of the following:
A. Upon receiving the RADIUS:Access-Accept message, it transmits the "HTTP 201 OK" message to
the User PC.
B. Upon receiving the RADIUS: Accept-Reject message, it transmits the "Access Denied" message to
the User PC.
C. Upon receiving the RADIUS: Access-Challenge message, it transmits the "PAP/CHAP challenge
response" message to the Radius Server.
Upon receiving the "HTTP 201 OK" message, the user can browse the CDM-425 Advanced Satellite Modem
7
HTTP (Web Server) Interface pages.
O.4
RADIUS Operation and Configuration
RADIUS is available only when you configure the CDM-425 Advanced Satellite Modem for IP or
IP-ACM operating mode. Enabling and disabling of RADIUS is possible only through:
•
The modem front panel
•
The modem HTTP (Web Server) Interface Admin | Access page
•
Issuance of Telnet remote commands
With RADIUS enabled, any login attempt through the HTTP, Telnet, or Telnet CLI interfaces
results in the modem first contacting the RADIUS Client Server for authentication and
authorization before granting remote user access. Comtech EF Data provides three levels of user
access/login – Admin, Read/Write, and Read Only. Access to operations is controlled as follows:
Appendix O
Depending on the user access rights received from the RADIUS server, the CDM-425
Advanced Satellite Modem allows the user Read-only or Read-Write access to the
interface.
CDM-425 Advanced Satellite Modem
Action
O–4
Revision 0
MN-CDM-425
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