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Chapter 15 Firewall
AMG1302/AMG1202-TSeries User’s Guide
175
Anti-Probing
If an outside user attempts to probe an unsupported port on your AMG1302/AMG1202-TSeries, an
ICMP response packet is automatically returned. This allows the outside user to know the
AMG1302/AMG1202-TSeries exists. The AMG1302/AMG1202-TSeries supports anti-probing, which
prevents the ICMP response packet from being sent. This keeps outsiders from discovering your
AMG1302/AMG1202-TSeries when unsupported ports are probed.
ICMP
Internet Control Message Protocol (ICMP) is a message control and error-reporting protocol
between a host server and a gateway to the Internet. ICMP uses Internet Protocol (IP) datagrams,
but the messages are processed by the TCP/IP software and directly apparent to the application
user.
DoS Thresholds
For DoS attacks, the AMG1302/AMG1202-TSeries uses thresholds to determine when to drop
sessions that do not become fully established. These thresholds apply globally to all sessions. You
can use the default threshold values, or you can change them to values more suitable to your
security requirements.
15.2 The Firewall General Screen
Use this screen to select the firewall protection level on the AMG1302/AMG1202-TSeries. Click
Security > Firewall > General
to display the following screen.
Figure 81
Security > Firewall > General
Содержание AMG1202-T series
Страница 4: ...Contents Overview AMG1302 AMG1202 TSeries User s Guide 4 ...
Страница 13: ...13 PART I User s Guide ...
Страница 14: ...14 ...
Страница 20: ...Chapter 1 Introduction AMG1302 AMG1202 TSeries User s Guide 20 ...
Страница 28: ...Chapter 2 Introducing the Web Configurator AMG1302 AMG1202 TSeries User s Guide 28 ...
Страница 61: ...Chapter 4 Tutorials AMG1302 AMG1202 TSeries User s Guide 61 Tutorial Advanced QoS Class Setup ...
Страница 64: ...Chapter 4 Tutorials AMG1302 AMG1202 TSeries User s Guide 64 ...
Страница 65: ...65 PART II Technical Reference ...
Страница 66: ...66 ...
Страница 72: ...Chapter 5 Connection Status and System Info Screens AMG1302 AMG1202 TSeries User s Guide 72 ...
Страница 120: ...Chapter 7 Wireless LAN AMG1302 AMG1202 TSeries User s Guide 120 ...
Страница 144: ...Chapter 10 Quality of Service QoS AMG1302 AMG1202 TSeries User s Guide 144 Figure 64 QoS Class Setup Add Edit ...
Страница 150: ...Chapter 10 Quality of Service QoS AMG1302 AMG1202 TSeries User s Guide 150 ...
Страница 160: ...Chapter 11 Network Address Translation NAT AMG1302 AMG1202 TSeries User s Guide 160 ...
Страница 172: ...Chapter 14 Filters AMG1302 AMG1202 TSeries User s Guide 172 ...
Страница 194: ...Chapter 16 Parental Control AMG1302 AMG1202 TSeries User s Guide 194 ...
Страница 200: ...Chapter 17 Certificate AMG1302 AMG1202 TSeries User s Guide 200 ...
Страница 206: ...Chapter 19 Traffic Status AMG1302 AMG1202 TSeries User s Guide 206 ...
Страница 208: ...Chapter 20 User Account AMG1302 AMG1202 TSeries User s Guide 208 ...
Страница 212: ...Chapter 21 TR 069 Client AMG1302 AMG1202 TSeries User s Guide 212 ...
Страница 216: ...Chapter 22 System Settings AMG1302 AMG1202 TSeries User s Guide 216 ...
Страница 222: ...Chapter 24 Backup Restore AMG1302 AMG1202 TSeries User s Guide 222 ...
Страница 234: ...Chapter 25 Remote Management AMG1302 AMG1202 TSeries User s Guide 234 ...
Страница 238: ...Chapter 26 Diagnostic AMG1302 AMG1202 TSeries User s Guide 238 ...
Страница 244: ...Chapter 27 Troubleshooting AMG1302 AMG1202 TSeries User s Guide 244 ...
Страница 280: ...Appendix C Pop up Windows JavaScripts and Java Permissions AMG1302 AMG1202 TSeries User s Guide 280 ...
Страница 294: ...Appendix D Wireless LANs AMG1302 AMG1202 TSeries User s Guide 294 ...
Страница 304: ...Appendix E IPv6 AMG1302 AMG1202 TSeries User s Guide 304 ...
Страница 320: ...Index AMG1302 AMG1202 TSeries User s Guide 320 ...