Chapter 6 LAN Setup
P-660HW-Dx v2 User’s Guide
94
6.1.2 DHCP Setup
DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows individual
clients to obtain TCP/IP configuration at start-up from a server. You can configure the ZyXEL
Device as a DHCP server or disable it. When configured as a server, the ZyXEL Device
provides the TCP/IP configuration for the clients. If you turn DHCP service off, you must
have another DHCP server on your LAN, or else the computer must be manually configured.
6.1.2.1 IP Pool Setup
The ZyXEL Device is pre-configured with a pool of IP addresses for the DHCP clients (DHCP
Pool). See the product specifications in the appendices. Do not assign static IP addresses from
the DHCP pool to your LAN computers.
6.1.3 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 ZyXEL Device
supports the IPCP DNS server extensions through the DNS proxy feature.
If the
Primary
and
Secondary DNS Server
fields in the
DHCP Setup
screen are not
specified, for instance, left as
0.0.0.0
, the ZyXEL Device tells the DHCP clients that it itself is
the DNS server. When a computer sends a DNS query to the ZyXEL Device, the ZyXEL
Device 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
DHCP Setup screen. This way, the ZyXEL Device can pass the DNS servers to the computers
and the computers can query the DNS server directly without the ZyXEL Device’s
intervention.
6.1.4 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.
Содержание P-660HW-D1 V2
Страница 2: ......
Страница 7: ...Safety Warnings P 660HW Dx v2 User s Guide 7...
Страница 8: ...Safety Warnings P 660HW Dx v2 User s Guide 8...
Страница 10: ...Contents Overview P 660HW Dx v2 User s Guide 10...
Страница 19: ...Table of Contents P 660HW Dx v2 User s Guide 19 Index 351...
Страница 20: ...Table of Contents P 660HW Dx v2 User s Guide 20...
Страница 26: ...List of Figures P 660HW Dx v2 User s Guide 26...
Страница 31: ...31 PART I Introduction Introducing the ZyXEL Device 33 Introducing the Web Configurator 39...
Страница 32: ...32...
Страница 51: ...51 PART II Wizards Wizard Setup for Internet Access 53 Bandwidth Management Wizard 67...
Страница 52: ...52...
Страница 66: ...Chapter 3 Wizard Setup for Internet Access P 660HW Dx v2 User s Guide 66...
Страница 72: ...Chapter 4 Bandwidth Management Wizard P 660HW Dx v2 User s Guide 72...
Страница 73: ...73 PART III Network WAN Setup 75 LAN Setup 93 Wireless LAN 105 Network Address Translation NAT Screens 129...
Страница 74: ...74...
Страница 92: ...Chapter 5 WAN Setup P 660HW Dx v2 User s Guide 92...
Страница 128: ...Chapter 7 Wireless LAN P 660HW Dx v2 User s Guide 128...
Страница 141: ...141 PART IV Security Firewalls 143 Firewall Configuration 155 Content Filtering 177 Certificates 145...
Страница 142: ...142...
Страница 162: ...Chapter 10 Firewall Configuration P 660HW Dx v2 User s Guide 162 Figure 92 Firewall Edit Rule...
Страница 176: ...Chapter 10 Firewall Configuration P 660HW Dx v2 User s Guide 176...
Страница 180: ...Chapter 11 Content Filtering P 660HW Dx v2 User s Guide 180...
Страница 182: ...182...
Страница 186: ...Chapter 12 Static Route P 660HW Dx v2 User s Guide 186...
Страница 202: ...Chapter 14 Dynamic DNS Setup P 660HW Dx v2 User s Guide 202...
Страница 224: ...Chapter 16 Universal Plug and Play UPnP P 660HW Dx v2 User s Guide 224...
Страница 225: ...225 PART VI Maintenance and Troubleshooting System 227 Logs 233 Tools 251 Diagnostic 257 Troubleshooting 259...
Страница 226: ...226...
Страница 232: ...Chapter 17 System P 660HW Dx v2 User s Guide 232...
Страница 250: ...Chapter 18 Logs P 660HW Dx v2 User s Guide 250...
Страница 256: ...Chapter 19 Tools P 660HW Dx v2 User s Guide 256...
Страница 264: ...264...
Страница 332: ...Appendix F Internal SPTGEN P 660HW Dx v2 User s Guide 332...
Страница 346: ...Appendix J Legal Information P 660HW Dx v2 User s Guide 346...
Страница 358: ...Index P 660HW Dx v2 User s Guide 358...