QuadroCS Manual II: Administrator's Guide
Administrator's Menus
Quadro
CS
(SW Version 3.0.x)
29
The
STUN Parameters
page enables automatic NAT
configuration through the STUN server and is used to configure
the STUN (Simple Traversal of UDP over NAT) client on the
Quadro. The page requires following data to be inserted:
The
STUN Server
text field requires the STUN server’s
hostname or IP address. The
STUN
Port
text field requires the
STUN server port number.
The
Polling Interval
drop down list contains the possible time
intervals between referrals to the STUN server.
The
Keep-alive interval
text field gives the possibility to select
the time interval (in seconds) for keeping NAT mapping alive.
Fig.0-42 STUN Parameters page
The
NAT Exclusion Table
page includes a table where all possible LAN IP ranges are listed that allows to exclude some network addresses from
being NATed. For example, if you have several Quadros with a SIP proxy server within the same local network, then NAT (Network Address
Translation) should not be used for those devices. If this type of network configuration exists, and NAT traversal must be used, then this table must
be filled in first before enabling NAT traversal. Otherwise, a malfunction may occur in SIP operations.
The
NAT Exclusion Table
page offers the following input options:
Each record in the table has its checkbox assigned to its row. It is used to delete or to edit the corresponding record. An error occurs if no records
are selected and the user activates the delete or edit button: “No records selected." The error message "One record should be selected” is
displayed, if the user tries to edit more than one record at the same time. Each column heading in the table is created as a link. By clicking on the
column heading, the table will be sorted by the selected column. Upon sorting (ascending, descending), arrows will be displayed close to the column
heading.
The
Add Entry
page includes the following text fields:
Add
opens the
Add Entry
page where new LAN IP range
can be added.
Edit
opens the
Edit Entry
page where the LAN IP range can
be modified. The page includes the same components as the
Add Entry
page.
The
NAT Exclusion Table
lists all possible LAN IP ranges
that are not included into the NAT process, but may be
accessed directly. IP addresses that are not listed in the
NAT
Exclusion Table
are accessed over NAT.
Fig.0-43 NAT Exclusion Table page
IP address
requires the IP address that is placed behind
NAT within the LAN network.
Subnet Mask
requires the subnet Mask corresponding to the
specified IP address.
Fig.0-44 NAT Exclusion Table - Add Entry page
Configuring the NAT Exclusion Table
1.
Press
the
Add
button on the
NAT Exclusion Table
page. The
Add Entry
page will appear in the browser window.
2.
Specify
an
IP Address
and its
Subnet Mask
in the corresponding text fields.
3.
Press
Save
on the
Add Entry
page to add the selected IP range to the
NAT Exclusion Table
list.
