Nat Traversal Settings - Bizfon 2000 Administrator's Manual

Bizfon Manual II: Administrator's Guide

NAT Traversal Settings

The NAT Traversal Settings page is divided into separate pages used to configure General NAT settings, SIP NAT parameters, RTP and STUN
parameters for NAT and a page where the NAT Exclusion table may be filled.
The General Settings page consists of a manipulation radio
buttons group to select the mode of the NAT Traversal usage for
the SIP traffic (any incoming and outgoing SIP messages from
and to the Bizfon will be routed through the NAT PC).
•
Automatic – with this selection, system will analyze the
Bizfon's WAN IP address and if it is in the IP range
specified for local networks (according to RFC), the SIP
traffic will be routed through NAT. Otherwise, if Bizfon's
WAN IP address is outside the specified IP range, no SIP
traffic will be routed through NAT server.
•
Force – with this selection, all the SIP traffic will be routed
through the NAT server.
•
Disable – with this selection, no SIP traffic will be routed
through the NAT server.
The SIP Parameters page is used to configure NAT specific settings for SIP and offers two independent groups of settings:
UDP Parameters:
Manipulation radio buttons allow you to select the type of
connection over NAT:
Selecting Use STUN will switch to automatic discovery of
Mapped settings for the SIP UDP traffic over NAT. STUN
settings are configured on the STUN parameters page (see
below).
Selecting Use Manual NAT Traversal allows you to manually
define the mapped settings for the SIP UDP traffic over NAT:
Mapped Host requires the IP address of the mapped host for
SIP UDP traffic over NAT.
Mapped Port requires the port number on the mapped host
for the SIP UDP traffic over NAT.
TCP Parameters:
Mapped Host requires the IP address of the mapped host for
SIP TCP traffic over NAT.
Mapped Port requires the port number on the mapped host
for the SIP TCP traffic over NAT.
The RTP Parameters page is used to choose between the STUN and Manual NAT traversal connection for the RTP traffic and to define the
RTP/RTCP ports for the connection over NAT.
Manipulation radio buttons allow you to select the type of connection over NAT:
Selecting Use STUN will switch to automatic discovery of Mapped settings for the RTP UDP traffic over NAT. STUN settings are configured on the
STUN Parameters page (see below).
Selecting Use Manual NAT Traversal allows you to manually
define the RTP/RTCP port ranges for the RTP traffic over NAT:
•
The Mapped Host text fields require the Mapped Host for
RTP traffic over NAT.
•
Mapped RTP/RTCP Port Range:
•
Min - minimal port has to be higher than 1024 and lower
than the maximal port range. Only even numbers are
allowed.
•
Max - maximal port has to be lower than 65536 and
higher than the minimal port range. Only odd numbers
are allowed.
Please Note: RTP/RTCP Mapped Port ranges should be
greater than or equal to the RTP/RTCP port ranges defined on
the RTP Settings page.
Bizfon2000 and Bizfon4000 (SW Version 4.1.x)
Administrator's Menus
Fig. II-104: General NAT traversal page
Fig. II-105: SIP Parameters page
Fig. II-106: RTP Parameters page
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