Proscend 6200-2W, Руководство пользователя

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Details of your DDNS account (Host name, Name, password) must then be entered and saved on this screen.
The device will then automatically ensure that you current IP address is recorded by the DDNS service provider from
the internet, users will now be able to connect to your Virtual Servers using your Domain name.
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IGMP (Internet Group Management Protocol) proxy can be used to implement multicast routing. It works by IGMP
frame forwarding. VPN Router’s IGMP proxy supports IGMP version 2 (RFC2236).
IGMP proxy enables the system to issue IGMP host messages on behalf of hosts that the system discovered through
standard IGMP interfaces. The system acts as a
proxy
for its hosts.
IGMP snooping is the process of listening to IGMP network traffic. IGMP snooping, as implied by the name, is a feature
that allows VPN Router to "listen in" on the IGMP conversation between hosts to this VPN Router by processing the
IGMP packets sent in a multicast network.
When IGMP snooping is enabled, VPN router will analyzes all IGMP packets between hosts connected to the VPN
router and multicast routers in the network. When the VPN router hears an IGMP report from remote side for a given
multicast group, the VPN router adds the host's port number to the multicast list for that group. And, when the VPN
Router hears an IGMP leave, it removes the host's port from the table entry.
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A firewall is a set of related programs that protects the resources of a private network from other networks. It is
helpful to users that allow preventing hackers to access its own private data resource accidentally.
There have three security levels for setting: Basic firewall security, Automatic firewall security and advanced firewall
security.