Axis 211M Guida Utente

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For NAT traversal to work, this must also be supported by the broadband router.

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The broadband router has many different names: “NAT router”, “Network router“, Internet Gateway”, “Broadband 
sharing device” or “Home firewall” but the essential purpose of the device is the same.

Enable/Disable - When enabled, the AXIS 211M will attempt to configure port mapping in a NAT router on 

your network, using UPnP™. Note that UPnP™ must be enabled in the camera (see System Options > Network > 

UPnP™).
Use manually selected NAT router - Select this option to manually select a NAT router and enter the IP address 

for the router in the field provided.

If a router is not manually specified, the AXIS 211M will automatically search for NAT routers on your network. 

If more than one router is found, the default router will be selected.

Alternative HTTP port - Select this option to manually define an external HTTP port. Enter the port number in 

the field provided. If no port is entered here a port number will automatically be selected when NAT traversal is 

enabled. 

•An alternative HTTP port can be used/be active even if NAT traversal is disabled. This is useful if, e.g. your NAT router does 

not support 

UPnP™

 and you need to manually configure port forwarding in the NAT router.

•If a manually selected port is already in use, another will automatically be selected.
•When the port is selected automatically it will be displayed in this field. This can be changed by entering a new port 

number and clicking Save.

FTP
The FTP server running in the AXIS 211M enables the upload of, e.g. new firmware, and user applications. 

Check the box to enable the service.

RTSP
The RTSP protocol allows a connecting client to start an MPEG-4 stream. Check the box to enable the service 

and enter the RTSP port number to use. The default setting (554) can be changed to any port within the range 

1024-65535.

Network Traffic
Connection Type - The default setting is Auto-negotiate, which means that the correct speed is automatically 

selected. If necessary, you can set the connection speed by selecting it from the drop-down list.

SOCKS is a networking proxy protocol. The AXIS 211M can be configured to use a SOCKS server to reach 

networks on the other side of a firewall/proxy server. This functionality is useful if the AXIS 211M is located on 

a local network behind a firewall, but notifications, uploads, and alarms need to be sent to a destination outside 

the local network (e.g. to the Internet).

Quality of Service (QoS) provides the means to guarantee a certain level of a specified resource to selected traffic 

on a network. Quality can be defined as a maintained level of bandwidth, low latency, no packet losses. The 

main benefits of a QoS-aware network can be summarized as:

•The ability to prioritize traffic and thus allow critical flows to be served before flows with lesser priority.
•Greater reliability in the network, thanks to the control of the amount of bandwidth an application may use, 

and thus control over bandwidth races between applications.
The QoS in Axis network video products marks the data packets for various types of network traffic originating 

from the product. This makes it possible for network routers and switches to, e.g. reserve a fixed amount of 

bandwidth for these types of traffic. The types of traffic marked by the camera are video, audio, event/alarm and 

management network traffic.