Security
Polycom, Inc. 8–19
Enabling a Whitelist
When a whitelist is enabled, the Polycom HDX system allows access to its web
interface only by those systems with an IP address that matches a pattern
using regular expression notation that is specified by this setting. You can use
this feature only through the web interface.
With regular expression notation, addresses are matched by pattern, which
means that you must take care to form your regular expressions to allow only
systems you mean to allow. In particular, regular expression notation treats
the period (.) character as a single wildcard (*) character. This results in
interpreting what looks like a normal IP address as a wildcard expression. For
example, if you entered an IP address of
15.1.2.111
, all of the following
results would match:
• 15.1.2.111
• 15.182.111
• 15.152.111
In order to prevent the wildcard treatment of the period (.) character, you must
use a backslash (\) character immediately preceding the period (.) character.
This escapes the period (.) character so that it is treated as a period. Using this
mechanism, the IP address
15.1.2.111
is correctly represented in regular
expression notation as
15\.1\.2\.111.
If you want to allow a range of IP addresses, use the wildcard (*). The
following examples use the wildcard (*) to allow a range of IP addresses:
• Enter
10\.11\..*\..* to allow all IP addresses that begin with
10.11
.
• To allow the IP address
1.2.3.4
, any address in the
10.11.*.*
subnet,
and any address in the
20.10.1x.*
subnet, enter:
— 1\.2\.3\.4
— 10\.11\.*\.*
— 20\.10\.1.\.*
To use a whitelist on the Polycom HDX web interface:
1 Go to Admin Settings > General Settings > Security > Whitelist.
2 Select Enable Whitelist.
3 In the Add IP Address field, use regular expression notation to enter the
IP address of the system you want to allow, then click Add.
Repeat this step for all the IP addresses you want to add.
If you entered an address in error, you can highlight it in the list and click
Remove.
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