Prestige 2602HW Series User’s Guide
74
Chapter 5 LAN Setup
5.2 DNS Server Address
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. The DNS server addresses that you enter in
the DHCP setup are passed to the client machines along with the assigned IP address and
subnet mask.
There are two ways that an ISP disseminates the DNS server addresses. The first is for an ISP
to tell a customer the DNS server addresses, usually in the form of an information sheet, when
s/he signs up. If your ISP gives you the DNS server addresses, enter them in the
DNS Server
fields in
DHCP Setup
, otherwise, leave them blank.
Some ISP’s choose to pass the DNS servers using the DNS server extensions of PPP IPCP (IP
Control Protocol) after the connection is up. If your ISP did not give you explicit DNS
servers, chances are the DNS servers are conveyed through IPCP negotiation. The Prestige
supports the IPCP DNS server extensions through the DNS proxy feature.
If the
Primary
and
Secondary DNS Server
fields in the
LAN Setup
screen are not
specified,
for instance, left as 0.0.0.0, the Prestige tells the DHCP clients that it itself is the DNS server.
When a computer sends a DNS query to the Prestige, the Prestige forwards the query to the
real DNS server learned through IPCP and relays the response back to the computer.
Please note that DNS proxy works only when the ISP uses the IPCP DNS server extensions. It
does not mean you can leave the DNS servers out of the DHCP setup under all circumstances.
If your ISP gives you explicit DNS servers, make sure that you enter their IP addresses in the
LAN Setup
screen. This way, the Prestige can pass the DNS servers to the computers and the
computers can query the DNS server directly without the Prestige’s intervention.
5.3 DNS Server Address Assignment
Use DNS (Domain Name System) to map 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 computer before you can access it.
There are two ways that an ISP disseminates the DNS server addresses.
• 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, enter them in the DNS
Server fields in DHCP Setup.
• The Prestige acts as a DNS proxy when the
Primary
and
Secondary
DNS Server
fields
are left blank in the
LAN Setup
screen.
Содержание Prestige 2602HW Series
Страница 1: ...Prestige 2602HW Series ADSL VoIP IAD with 802 11g Wireless User s Guide Version 3 40 August 2004...
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Страница 30: ...Prestige 2602HW Series User s Guide 30...
Страница 36: ...Prestige 2602HW Series User s Guide 36...
Страница 40: ...Prestige 2602HW Series User s Guide 40 Introduction to DSL...
Страница 72: ...Prestige 2602HW Series User s Guide 72 Chapter 4 Password Setup...
Страница 102: ...Prestige 2602HW Series User s Guide 102 Chapter 6 Wireless LAN Setup...
Страница 112: ...Prestige 2602HW Series User s Guide 112 Chapter 7 WAN Setup...
Страница 124: ...Prestige 2602HW Series User s Guide 124 Chapter 8 Network Address Translation NAT Screens...
Страница 130: ...Prestige 2602HW Series User s Guide 130 Chapter 9 Introduction to VoIP...
Страница 142: ...Prestige 2602HW Series User s Guide 142 Chapter 10 Voice Screens...
Страница 148: ...Prestige 2602HW Series User s Guide 148 Chapter 12 Time and Date...
Страница 162: ...Prestige 2602HW Series User s Guide 162 Chapter 13 Firewalls...
Страница 192: ...Prestige 2602HW Series User s Guide 192 Chapter 16 Remote Management Configuration...
Страница 206: ...Prestige 2602HW Series User s Guide 206 Chapter 17 Universal Plug and Play UPnP...
Страница 212: ...Prestige 2602HW Series User s Guide 212 Chapter 18 Logs Screens...
Страница 214: ...Prestige 2602HW Series User s Guide 214 Chapter 19 Maintenance Figure 102 System Status...
Страница 224: ...Prestige 2602HW Series User s Guide 224 Chapter 19 Maintenance...
Страница 232: ...Prestige 2602HW Series User s Guide 232 Chapter 20 Introducing the SMT...
Страница 236: ...Prestige 2602HW Series User s Guide 236 Chapter 21 Menu 1 General Setup...
Страница 240: ...Prestige 2602HW Series User s Guide 240 Chapter 22 Menu 2 WAN Backup Setup...
Страница 244: ...Prestige 2602HW Series User s Guide 244 Chapter 23 Menu 3 LAN Setup...
Страница 248: ...Prestige 2602HW Series User s Guide 248 Chapter 24 Wireless LAN Setup...
Страница 254: ...Prestige 2602HW Series User s Guide 254 Chapter 25 Internet Access...
Страница 268: ...Prestige 2602HW Series User s Guide 268 Chapter 27 Static Route Setup...
Страница 272: ...Prestige 2602HW Series User s Guide 272 Chapter 28 Bridging Setup...
Страница 288: ...Prestige 2602HW Series User s Guide 288 Chapter 29 Network Address Translation NAT...
Страница 304: ...Prestige 2602HW Series User s Guide 304 Chapter 31 Filter Configuration...
Страница 324: ...Prestige 2602HW Series User s Guide 324 Chapter 34 System Information and Diagnosis...
Страница 340: ...Prestige 2602HW Series User s Guide 340 Chapter 35 Firmware and Configuration File Maintenance...
Страница 345: ...Prestige 2602HW Series User s Guide Chapter 36 System Maintenance 345 24 hour intervals after starting...
Страница 346: ...Prestige 2602HW Series User s Guide 346 Chapter 36 System Maintenance...
Страница 350: ...Prestige 2602HW Series User s Guide 350 Chapter 37 Remote Management...
Страница 362: ...Prestige 2602HW Series User s Guide 362 Chapter 39 Call Scheduling...
Страница 366: ...Prestige 2602HW Series User s Guide 366 Chapter 40 Internal SPTGEN...
Страница 372: ...Prestige 2602HW Series User s Guide 372 Chapter 41 Troubleshooting...
Страница 376: ...Prestige 2602HW Series User s Guide 376 Appendix A Hardware Specifications...
Страница 396: ...Prestige 2602HW Series User s Guide 396 Appendix C IP Subnetting...
Страница 402: ...Prestige 2602HW Series User s Guide 402 Appendix E Wireless LAN and IEEE 802 11...
Страница 409: ...Prestige 2602HW Series User s Guide Appendix H Triangle Route 409...
Страница 410: ...Prestige 2602HW Series User s Guide 410 Appendix H Triangle Route...
Страница 434: ...Prestige 2602HW Series User s Guide 434 Appendix J Command Interpreter...
Страница 436: ...Prestige 2602HW Series User s Guide 436 Appendix K Firewall Commands...