❸ Remarks: Enter a descriptive name for the rule, or leave it blank. 
❹  MAC  Address:  Input  the  MAC  address  of  the  device  you  want  to  permit,  here 
00:E4:A5:44:35:69. 
❺ Time, Day: Select 13:00~18:00, Sat~Sun. 
❻ Click Save to apply your settings. 
How to Configure DDNS Settings 
Dynamic DNS or DDNS is a term used for the updating in real time of Internet Domain Name 
System (DNS) name servers. We use a numeric IP address allocated by Internet Service Provider 
(ISP) to connect to Internet; the address may either be stable ("static"), or may change from one 
session on the Internet to the next ("dynamic"). However, a numeric address is inconvenient to 
remember;  an  address  which  changes unpredictably  makes  connection impossible. The  DDNS 
provider allocates a static host name to the user; whenever the user is allocated a new IP address 
this is communicated to the DDNS provider by software running on a computer or network device 
at that address; the provider distributes the association between the host name and the address to 
the Internet's DNS servers so that they may resolve DNS queries. Thus, uninterrupted access to 
devices and services whose numeric IP address may change is maintained. 
Note that this function is only available in WISP and Router mode. 
Click Advanced > Network Service to locate the DDNS section.