Chapter 12 Firewall
LTE-5121 User’s Guide
131
12.5 The DoS Screen
Click Security > Firewall > DoS to display the following screen. Use this screen to enable or
disable Denial of Service (DoS) protection.
Figure 90
Security > Firewall > DoS
Each field is described in the following table.
Protocol
This field is available when you select Select Service in Select Protocol.
Choose the protocol type (TCP, UDP, ICMP or Others) of the service.
Protocol Number
This field is available when you select Others in Protocol.
Enter the protocol number of the service type to which this ACL rule applies.
Source Port
This field is displayed only when you select Select Service in Select Protocol and TCP
or UDP in Protocol.
Select Single or Range and then enter a single port number or the range of port
numbers of the source. Select Any to indicate any source port.
Destination Port
This field is displayed only when you select Select Service in Select Protocol and TCP
or UDP in Protocol.
Select Single or Range and then enter a single port number or the range of port
numbers of the destination. Select Any to indicate any destination port.
Policy
Use the drop-down list box to select whether to silently discard (DROP), deny and send
an ICMP destination-unreachable message to the sender of (REJECT) or allow the
passage of (PERMIT) packets that match this rule.
Direction
Use the drop-down list box to select the direction of traffic to which this rule applies. The
possible options are LAN to DEVICE, LAN to WAN, WAN to LAN, and WAN to
DEVICE.
Apply
Click Apply to save your changes.
Back
Click Back to exit this screen without saving your changes.
Table 50
Security > Firewall > Access Control > Add New ACL Rule/Edit (continued)
LABEL
DESCRIPTION
Table 51
Security > Firewall > DoS
LABEL
DESCRIPTION
DoS Protection
Blocking
DoS (Denial of Service) attacks can flood your Internet connection with invalid packets
and connection requests, using so much bandwidth and so many resources that Internet
access becomes unavailable.
Select Enable to enable protection against DoS attacks or Disable to disable it.
Apply
Click Apply to save the DoS Protection settings.
Cancel
Click Cancel to restore your previously saved settings.
Summary of Contents for LTE5121
Page 4: ...Contents Overview LTE 5121 User s Guide 4...
Page 12: ...Table of Contents LTE 5121 User s Guide 12...
Page 13: ...13 PART I User s Guide...
Page 14: ...14...
Page 22: ...Chapter 1 Introduction LTE 5121 User s Guide 22...
Page 28: ...28...
Page 42: ...Chapter 4 Broadband LTE 5121 User s Guide 42...
Page 70: ...Chapter 5 Wireless LTE 5121 User s Guide 70...
Page 98: ...Chapter 7 Static Route LTE 5121 User s Guide 98...
Page 102: ...Chapter 8 DNS Route LTE 5121 User s Guide 102...
Page 114: ...Chapter 9 Quality of Service QoS LTE 5121 User s Guide 114...
Page 138: ...Chapter 14 Parental Control LTE 5121 User s Guide 138...
Page 148: ...Chapter 15 Certificates LTE 5121 User s Guide 148...
Page 151: ...Chapter 16 VPN LTE 5121 User s Guide 151 Figure 104 IPSec VPN Add...
Page 162: ...Chapter 16 VPN LTE 5121 User s Guide 162...
Page 198: ...Chapter 19 User Account LTE 5121 User s Guide 198...
Page 214: ...Chapter 26 Backup Restore LTE 5121 User s Guide 214...
Page 224: ...Chapter 28 Troubleshooting LTE 5121 User s Guide 224...
Page 234: ...Index LTE 5121 User s Guide 234...