In a video conference, record the static NAT network environment.

1, introduction of network environment

Video terminal A: IP: 192.5438+068.3.30? (Intranet)

NAT server: Huawei router WS5200? Have NAT service function?

WAN IP: 192. 168.0.8 (IP address of external network)

LAN IP:192.168.3.1(intranet IP address, intranet gateway address)

Video terminal B: 192. 168.0.2 (external network address)

A: 192. 168.3. 30- LAN:192.168.3.1||| NAT (router) |

Current network environment

Can A directly ping B's IP address?

Answer: ping 192. 168.0.2 can be connected.

B ping can't get through to a's IP address

In a peer-to-peer conference: A calls B.

Audio destination port sent from A to B: 60040.

Video destination port sent from A to B: 60042

The router NAT service configuration is as follows: (Only the screenshot of audio port configuration is posted)

After configuring NAT service,

Terminal a configures static NAT IP address.

Terminal A is configured with a static NAT IP address: 192. 168.0.8 (that is, the WAN port address of the router).

At this point, the source IP address of the packet will become 192.5438+068.0.8.

UDP packets received by the router on port 60040 will be sent to the mapped intranet address port number. Realize network traversal.

After configuration, terminal A can directly call terminal B through IP to realize network traversal of audio and video streams.

Note: terminal b cannot call terminal a, but can only call through terminal a. ..