____________________________________________________________________________________ 
____________________________________________________________________________________ 
34  NTU-2V, NTU-RG Optical Network Terminals 
4.3.5.2  The 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 lilts of prohibited/allowed URLs. 
 
 
–  URL List Type – list type: 
–  Exclude – prohibited URLs; 
–  Include – allowed URLs. 
In order to add a new URL to a list, set the flag in front of the corresponding list (URL List Type) and click 
the Add button. 
   
 
–  URL Address – 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. 
4.3.6  The Dynamic DNS Menu. Settings of Dynamic Domain Name System 
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. NTU-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. 
 
In order to add a record, click the Add button. Click Remove in front of a selected record to remove it.