VMG1312-B Series User’s Guide
217
C
H A P T E R
1 5
Firewall
15.1 Overview
This chapt er shows you how t o enable and configure t he Device’s securit y set t ings. Use t he firewall
t o prot ect your Device and net work from at t acks by hackers on t he I nt ernet and cont rol access t o
it . By default t he firewall:
• allows t raffic t hat originat es from your LAN com put ers t o go t o all ot her net works.
• blocks t raffic t hat originat es on ot her net works from going t o t he LAN.
The following figure illust rat es t he default firewall act ion. User
A
can init iat e an I M ( I nst ant
Messaging) session from t he LAN t o t he WAN ( 1) . Ret urn t raffic for t his session is also allowed ( 2) .
However ot her t raffic init iat ed from t he WAN is blocked ( 3 and 4) .
Figure 99
Default Firewall Act ion
15.1.1 What You Can Do in this Chapter
• Use t he
Ge n e r a l
screen t o configure t he securit y level of t he firewall on t he Device (
) .
• Use t he
Se r vice
screen t o add or rem ove predefined I nt ernet services and configure firewall
rules (
) .
• Use t he
Acce ss Con t r ol
screen t o view and configure incom ing/ out going filt ering rules (
) .
• Use t he
D oS
screen t o act ivat e prot ect ion against Denial of Service ( DoS) at t acks ( .
) .
WAN
LAN
3
4
1
2
A
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 ...