ZyXEL UAG4100 User Guide - Page 493
DNS Overview
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Chapter 46 System 46.6 DNS Overview DNS (Domain Name System) is for mapping a domain name to its corresponding IP address and vice versa. The DNS server is extremely important because without it, you must know the IP address of a machine before you can access it. 46.6.1 DNS Server Address Assignment The UAG can get the DNS server addresses in the following ways. • The ISP tells you the DNS server addresses, usually in the form of an information sheet, when you sign up. If your ISP gives you DNS server addresses, manually enter them in the DNS server fields. • If your ISP dynamically assigns the DNS server IP addresses (along with the UAG's WAN IP address), set the DNS server fields to get the DNS server address from the ISP. • You can manually enter the IP addresses of other DNS servers. 46.6.2 Configuring the DNS Screen Click Configuration > System > DNS to change your UAG's DNS settings. Use the DNS screen to configure the UAG to use a DNS server to resolve domain names for UAG system features like DDNS and the time server. You can also configure the UAG to accept or discard DNS queries. Use the Network > Interface screens to configure the DNS server information that the UAG sends to the specified DHCP client devices. UAG Series User's Guide 493
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