Chapter 8 Home Networking
VMG1312-B Series User’s Guide
159
• Som e I SPs choose t o dissem inat e t he DNS server addresses using t he DNS server ext ensions of
I PCP ( I P Cont rol Prot ocol) aft er t he connect ion is up. I f your I SP did not give you explicit DNS
servers, chances are t he DNS servers are conveyed t hrough I PCP negot iat ion. The Device
support s t he I PCP DNS server ext ensions t hrough t he DNS proxy feat ure.
Please not e t hat DNS proxy works only when t he I SP uses t he I PCP DNS server ext ensions. I t
does not m ean you can leave t he DNS servers out of t he DHCP set up under all circum st ances. I f
your I SP gives you explicit DNS servers, m ake sure t hat you ent er t heir I P addresses in t he
D H CP Se t u p
screen.
8.10.4 LAN TCP/IP
The Device has built- in DHCP server capabilit y t hat assigns I P addresses and DNS servers t o
syst em s t hat support DHCP client capabilit y.
IP Address and Subnet Mask
Sim ilar t o t he way houses on a st reet share a com m on st reet nam e, so t oo do com put ers on a LAN
share one com m on net work num ber.
Where you obt ain your net work num ber depends on your part icular sit uat ion. I f t he I SP or your
net work adm inist rat or assigns you a block of regist ered I P addresses, follow t heir inst ruct ions in
select ing t he I P addresses and t he subnet m ask.
I f t he I SP did not explicit ly give you an I P net work num ber, t hen m ost likely you have a single user
account and t he I SP will assign you a dynam ic I P address when t he connect ion is est ablished. I f t his
is t he case, it is recom m ended t hat you select a net work num ber from 192.168.0.0 t o
192.168.255.0 and you m ust enable t he Net work Address Translat ion ( NAT) feat ure of t he Device.
The I nt ernet Assigned Num ber Aut horit y ( I ANA) reserved t his block of addresses specifically for
privat e use; please do not use any ot her num ber unless you are t old ot herwise. Let 's say you select
192.168.1.0 as t he net work num ber; which covers 254 individual addresses, from 192.168.1.1 t o
192.168.1.254 ( zero and 255 are reserved) . I n ot her words, t he first t hree num bers specify t he
net work num ber while t he last num ber ident ifies an individual com put er on t hat net work.
Once you have decided on t he net work num ber, pick an I P address t hat is easy t o rem em ber, for
inst ance, 192.168.1.1, for your Device, but m ake sure t hat no ot her device on your net work is
using t hat I P address.
The subnet m ask specifies t he net work num ber port ion of an I P address. Your Device will com put e
t he subnet m ask aut om at ically based on t he I P address t hat you ent ered. You don't need t o change
t he subnet m ask com put ed by t he Device unless you are inst ruct ed t o do ot herwise.
Private IP Addresses
Every m achine on t he I nt ernet m ust have a unique address. I f your net w orks are isolat ed from t he
I nt ernet , for exam ple, only bet ween your t wo branch offices, you can assign any I P addresses t o
t he host s wit hout problem s. However, t he I nt ernet Assigned Num bers Aut horit y ( I ANA) has
reserved t he following t hree blocks of I P addresses specifically for privat e net works:
• 10.0.0.0 — 10.255.255.255
• 172.16.0.0 — 172.31.255.255
• 192.168.0.0 — 192.168.255.255
Summary of Contents for VMG1312-B Series
Page 4: ...Contents Overview VMG1312 B Series User s Guide 4 Troubleshooting 289 ...
Page 14: ...Table of Contents VMG1312 B Series User s Guide 14 ...
Page 15: ...15 PART I User s Guide ...
Page 16: ...16 ...
Page 30: ...Chapter 2 The Web Configurator VMG1312 B Series User s Guide 30 ...
Page 35: ...Chapter 4 Tutorials VMG1312 B Series User s Guide 35 7 Click Apply to save your settings ...
Page 77: ...77 PART II Technical Reference ...
Page 78: ...78 ...
Page 166: ...Chapter 9 Routing VMG1312 B Series User s Guide 166 ...
Page 184: ...Chapter 10 Quality of Service QoS VMG1312 B Series User s Guide 184 ...
Page 210: ...Chapter 13 Interface Group VMG1312 B Series User s Guide 210 ...
Page 226: ...Chapter 15 Firewall VMG1312 B Series User s Guide 226 ...
Page 232: ...Chapter 17 Parental Control VMG1312 B Series User s Guide 232 ...
Page 242: ...Chapter 19 Certificates VMG1312 B Series User s Guide 242 ...
Page 246: ...Chapter 20 Log VMG1312 B Series User s Guide 246 ...
Page 250: ...Chapter 21 Traffic Status VMG1312 B Series User s Guide 250 ...
Page 256: ...Chapter 24 IGMP Status VMG1312 B Series User s Guide 256 ...
Page 260: ...Chapter 25 xDSL Statistics VMG1312 B Series User s Guide 260 ...
Page 262: ...Chapter 26 User Account VMG1312 B Series User s Guide 262 ...
Page 268: ...Chapter 29 TR 064 VMG1312 B Series User s Guide 268 ...
Page 272: ...Chapter 30 Time Settings VMG1312 B Series User s Guide 272 ...
Page 278: ...Chapter 32 Logs Setting VMG1312 B Series User s Guide 278 ...
Page 296: ...Chapter 36 Troubleshooting VMG1312 B Series User s Guide 296 ...
Page 336: ...Appendix C Pop up Windows JavaScripts and Java Permissions VMG1312 B Series User s Guide 336 ...
Page 350: ...Appendix D Wireless LANs VMG1312 B Series User s Guide 350 ...
Page 374: ...VMG1312 B Series User s Guide 374 Index ...