Yealink VC110, Руководство администратора

Страница: 102 / 268

Administrator‘s Guide for Yealink VC110 Video Conferencing Endpoint
90
NAT device usually connects two networks together, and translates the private (not
globally unique) addresses in the internal network into legal addresses. NAT can be
configured to advertise only one address for the entire network to the outside world.
This provides additional security by effectively hiding the entire internal network behind
that address.
Multiple solutions for NAT traversal are available, for example, application layer
gateway (ALG), simple traversal of UDP through NAT (STUN), and H.460 firewall
traversal.
If NAT/Firewall devices do not support the ALG. VC110 video conferencing endpoint
must be configured with the static NAT.
Static NAT defines a one-to-one mapping from one IP subnet to another IP subnet. The
mapping includes destination IP address translation in one direction and source IP
address translation in the reverse direction. From the NAT device, the original
destination address is the virtual host IP address while the mapped-to address is the
real host IP address.
If your endpoint is connected to a LAN that uses a NAT, you need to configure NAT Public
IP Address so that your endpoint can communicate to WAN.
Note
Static NAT feature parameters on the endpoint are described below:
Parameter Description Configuration Method
Static NAT
Specifies the static NAT type.

Disabled—the endpoint
Remote Control
Web User Interface
If H.460 firewall traversal is enabled on the endpoint,
the endpoint will automatically
ignore the static NAT settings for H.323 calls.
For more information on H.460 firewall
traversal, refer to on H.460 Firewall Traversal page 101 .