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34 NTU Optical Network Terminals
4.2.4.2 Url Filter submenu. Internet Access Restriction Settings
Url Filter—is a function of comprehensive analysis and control of access to certain Internet resources. This
parameter defines a list of prohibited/allowed URLs.
– URL List Type—type of the list:
– Exclude—prohibited URLs
– Include—allowed URLs
In order to add a new URL to a list, select the checkbox next to the corresponding list (URL List Type) and
click the Add button.
– URL—URL address
– Port Number—port number (if the field is empty, port 80 will be used)
Click the Apply/Save button to add settings to the table.
4.2.5 Dynamic DNS submenu. Dynamic DNS Configuration
Dynamic DNS (domain name system) allows information to be updated on DNS server in real time and
(optionally) automatically. There are two options for assignment of a constant domain name to a device
(computer, router, e. g. NTP-RG) having a dynamic IP address. The IP address can be assigned by IPCP in PPP
connections or in DHCP.
Dynamic DNS is often used in local networks where clients get IP addresses by DHCP and then register
their names in a local DNS server.
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