Encryption And Security; Verify Encryption Check Code - Polycom RealPresence Group Series User Manual

Encryption and Security

If encryption is enabled on the system, a locked padlock
is encrypted.
If a call is not encrypted, an open padlock appears on the monitor screen.
● If you are in a point-to-point call or a multipoint call hosted by another system, the padlock icon
displays the state of your individual connection.
● If you are hosting a multipoint call, the padlock icon displays the combined state of all connections:
encrypted if all connections in the call are encrypted, unencrypted if one or more connections in the
call are not encrypted.
In one call, some connections might be encrypted while others are not. However, the padlock icon might not
accurately indicate whether the call is encrypted if the call is cascaded or includes an audio-only endpoint.
If encryption is required on your system, the far end must support encryption or the call will not be
completed.
Note: To avoid security risks, Polycom recommends that all participants communicate the state of their
padlock icons verbally at the beginning of a call.

Verify Encryption Check Code

To provide extra security for encrypted H.323 calls, the RealPresence Centro solution provides an
encryption check code. Participants in a call can use this check code to verify that their call is not being
intercepted by a third party. This mechanism is most useful for point-to-point calling.The check code is a
16-digit hexadecimal number that is calculated so that the number is the same at both sites in the call. The
numbers are identical if, and only if, the calculation uses data exclusively from the two sites in the call, with
no data being intercepted and modified by a third party. Note that in externally-hosted multipoint calls, check
code numbers do not match any other numbers in the call.Polycom recommends verifying check codes at
each site to protect against third-party eavesdropping on H.323 point-to-point calls.
T
ASK
1 Place an encrypted H.323 point-to-point call.
2 Tap to open the Quick Access menu, tap
> Call Statistics.
3 On the Call Statistics screen, tap View Call Statistics.
4 For Call Encryption, locate the 16-digit check code as in the following example:
ABC-123/ab-1234 /
1a2b34c99009d66e
5 Verbally verify that the check code is the same at both sites.
6 Do one of the following:
 If the codes match, the call is secure. Proceed with the call.
 If the codes do not match, the call might be compromised. Hang up the call and contact your
system administrator.
Polycom, Inc.
Using the Touch User Interface
appears on the monitor screen when a call
More > Settings then tap System Information
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