VBrick Systems ETV v3.1 Manual Do Utilizador

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Access Control
ETV Portal Server Administrator Guide
47
Channels, to view VoD content, to publish content to the VoD, and to record content or 
schedule a recording. A unique feature of the ETV Portal Server software is the ability to 
group Resources into Resource Groups. This allows the administrator to quickly and easily 
assign several resources at once to specific Users or User Groups. 
STB Authentication
There are two ways (STP IP address or user PIN) to authenticate and authorize Set-Top 
Boxes in the ETV Portal Server. STB access control is slightly different from PC and 
Macintosh-based authentication (which uses the commonly employed User Name and 
Password mechanism). The two methods are outlined in the table below.
Authentication by PIN
When an end user accesses the ETV Portal Server via a STB, the Portal Server takes the 
following steps to authorize users. 
1. It determines if there is Authentication/Authorization information associated with the 
Host Name of the STB. If so, based on the STB Host Name, the ETV Portal Server will 
present the STB with the information appropriate to its privileges. Note that the ETV 
Portal Server uses the least restrictive settings when providing access to the system.
2. If there is no Authentication/Authorization information associated with the Host Name 
of the STB, the user will be prompted for a PIN. A PIN is a user-based mechanism to log 
onto the STB. When the user enters his or her PIN, the ETV Portal Server authenticates 
the user against the Portal Server database.
3. Once the user is authenticated, the ETV Portal Server will check the User Groups and/or 
Resource Groups that the User is associated with and the privileges associated with those 
groups.
Method
Description
User Interaction
Comment
User PIN
If Access Control is 
enabled, but the STB is not 
defined in the system, then 
Access Control works based 
on a User PIN. This PIN is 
defined on a Per User (not 
Per STB) basis, so that 
Users need to be setup in 
the system for this to work. 
When the user logs 
into the system, they 
will be prompted for 
their PIN. The user 
simply enters the PIN 
with the remote 
control or the wireless 
keyboard, and can then 
access the video.
This implementation is appropriate 
for environments where multiple 
users with different privileges will be 
accessing the same STB. An example 
of this would be a shared classroom, 
where multiple teachers are accessing 
the STB at different times. 
STP IP 
Address or 
Host Name
The ETV Portal Server 
system determines the 
content that the STB can 
view based on its IP 
Address or Host Name. 
No user interaction is 
required. The user 
simply turns on the 
STB, and only the 
content that the STB 
user can view displays.
This implementation is similar to a 
cable TV setup, e.g. if the cable plan 
does not include CNN, then that 
channel cannot be viewed. This 
implementation is easiest for end 
users because you do not have to 
remember user names or PINs. It is 
appropriate for environments where 
one or few people with the same 
privileges access the same STB.