Quadro SW-Version 4.1.x Instalační příručka stáhnout pdf (Strana 46)

QuadroISDN Manual II: Administrator's Guide Administrator’s Menus

QuadroISDN; SW Version 4.1.x 46

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. This page requires the 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 Secondary STUN Server and Secondary STUN Port text

fields respectively require the parameters of the secondary

STUN server.

The Polling Interval drop down list contains the possible time

intervals between referrals to the STUN server.

The Keep-alive interval text field provides the options to select

the time interval (in seconds) for keeping NAT mapping alive.

The value should be in the range of 10 to 300 seconds.

The NAT IP checking interval text field indicates the interval (in

seconds) between the NAT IP checking attempts (used to

distinguish the possible NAT IP address changes and to perform

registration on the new host). The value should be in the range

of 10 to 3600.

Fig. II-80: STUN Parameters page

The NAT Exclusion Table page includes a table where all possible IP ranges are listed that allows you to exclude some network addresses from

being NATed. For example, if a Quadro user needs to make SIP calls within the local network as well as outside of that network, all local IP

addresses are required to be excluded from NAT traversal settings by being listed in this table. Otherwise, a malfunction may occur in SIP

operations.

The NAT Exclusion Table page offers the following input

options:

Each record in the table has a corresponding checkbox

assigned to its row. The checkbox is used to delete or to

edit the corresponding record. Only one record may be

edited at a time. An error message will appear if no

selection is made or more than one is selected.

Each column heading in the table is a link. By clicking on

the column heading, the table will be sorted by the

selected column. When sorting (ascending or descending),

arrows will be displayed next to the column heading.

The Add Entry page includes the following text fields:

Add opens the Add Entry page where a new IP range

can be added.

Edit opens the Edit Entry page where the IP range can

be modified. This page includes the same components as

the Add Entry page.

The NAT Exclusion Table lists all possible IP ranges that

are not included in the NAT process, but may be accessed

directly. IP addresses that are not listed in the NAT

Exclusion Table are accessed over NAT.

Fig. II-81: NAT Exclusion Table page

IP address requires the IP address that is placed behind

NAT within the local network.

Subnet Mask requires the subnet mask corresponding to

the specified IP address.

Fig. II-82: NAT Exclusion Table - Add Entry page

To Configure 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.

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