Tainet VENUS 2916, Руководство пользователя

Страница: 117 / 225

Chapter 3 Configuration and Management
101
Figure 3-51 DDNS Configuration
Table 3-41 Description of DDNS Configuration Items
Field Description
DDNS mode Default: Disable
Enable, start up DDNS function.
HTTP access
address The HTTP server IP address , this is used for private network
pass through when VENUS 29xx is in private network. This
may be provided by DDNS service provider.
DDNS server
address Dynamic DNS server address , This is used for update locate
active information such as Local IP address
Host name The domain name in DDNS
User ID The user ID use for authentication
User password The password use for authentication
If the configuration is finished, click
“OK” button below the web page to confirm
changes or click
“Cancel” button to deny it.
3.5.5.5 NAT Traversal Configuration
User may assign one NAT address if the NAT server is DMZ. Otherwise, STUN
should be used. Simple Traversal of UDP through NATs (STUN) (according to RFC
3489) is a client/server protocol that solves most of the NAT traversal problems.
The STUN server operates in the public Internet and the STUN clients are
embedded in end-devices (located behind NAT). STUN is used both for the
signaling and the media streams. STUN works with many existing NAT types, and
does not require any special behavior from them.
STUN enables the gateway to discover the presence (and types) of NATs and
firewalls located between it and the public Internet. It provides the gateway with the