enabled and you can select which type of IGMP messages are forwarded by the
router:
- Auto: The router automatically detects the supported protocol (IGMPv3 or
IGMPv2) and forwards the message accordingly. This is the default setting,
which we recommend.
-
IGMPv3: The router forwards IGMPv3 messages but can also forward IGMPv2
messages. (IGMPv3 is backward compatible with IGMPv2.).
-
IGMPv2: The router forwards IGMPv2 messages only and ignores IGMPv3
messages.
If you do not need this feature, select the check box to disable it.
•
MTU Size (in bytes). The normal MTU (maximum transmit unit) value for most
Ethernet networks is 1500 bytes, or 1492 bytes for PPPoE connections. Change
the MTU only if you are sure that it is necessary for your ISP connection. See
Change the MTU size on page 48.
•
NAT Filtering. Network Address Translation (NAT) determines how the router
processes inbound traffic. Secured NAT protects computers on the LAN from
attacks from the Internet, but might prevent some Internet games, point-to-point
applications, or multimedia applications from working. Open NAT provides a
much less secured firewall, but allows almost all Internet applications to work.
•
Disable SIP ALG. The application-level gateway (ALG) for the Session Initiation
Protocol (SIP) is enabled by default for enhanced address and port translation.
However, some types of VoIP and video traffic might not work well when the SIP
ALG is enabled. For this reason, the router provides the option to disable the SIP
ALG.
6. Click the Apply button.
Your settings are saved.
Manage Dynamic DNS
Internet service providers (ISPs) assign numbers called IP addresses to identify each
Internet account. Most ISPs use dynamically assigned IP addresses. This means that the
IP address can change at any time. You can use the IP address to access your network
remotely, but most people don’t know what their IP addresses are or when this number
changes.
To make it easier to connect, you can get a free account with a Dynamic DNS service
that lets you use a domain name to access your business network. To use this account,
you must set up the router to use Dynamic DNS. Then the router notifies the Dynamic
User Manual70Manage the LAN, WAN, and
WiFi Settings
Orbi Pro Router Model SRR60 and Orbi Pro Satellite Model SRS60
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