SWG-1016 User Manual
40
OpenVox Communication Co. ,LTD.
URL: www.openvox.cn
Table 4-11 Definition of NAT Settings Options
Options
Definition
Local Network
Format:192.168.0.0/255.255.0.0 or 172.16.0.0./12. A list of
IP address or IP ranges which are located inside a NATed
network. This gateway will replace the internal IP address in
SIP and SDP messages with the external IP address when a
NAT exists between the gateway and other endpoints.
Local Network List
Local IP address list that you added.
Subscribe
Network Change Event
Through the use of the test_stun_monitor module, the
gateway has the ability to detect when the perceived external
network address has changed. When the stun_monitor is
installed and configured, chan_sip will renew all outbound
registrations when the monitor detects any sort of network
change has occurred. By default this option is enabled, but
only takes effect once res_stun_monitor is configured. If
res_stun_monitor is enabled and you wish to not generate all
outbound registrations on a network change, use the option
below to disable this feature.
Match External Address
Locally
Only substitute the externaddr or externhost setting if it
matches.
Dynamic Exclude Static
Disallow all dynamic hosts from registering as any IP
address used for statically defined hosts. This helps avoid
the configuration error of allowing your users to register at
the same address as a SIP provider.
Externally Mapped TCP
Port
The externally mapped TCP port, when the gateway is
behind a static NAT or PAT.
External Hostname
The external hostname (and optional TCP port) of the NAT.
Hostname
Refresh Interval
How often to perform a hostname lookup. This can be useful
when your NAT device lets you choose the port mapping, but
the IP address is dynamic. Beware, you might suffer from
service disruption when the name server resolution fails.
