ZyXEL Communications LTE6100 User Manual

 Chapter 10 Firewall

LTE6100 User’s Guide

Click Security > Firewall > DoS to display the following screen. Use this screen to enable or 
disable Denial of Service (DoS) protection. 

Security > Firewall > DoS

Destination IP 
Address Start

Enter an IP address or the starting IP address of the destination IP range.

Destination IP 
Address End

Enter the ending IP address of the destination IP range.

Select Protocol

Select the name of a configured service or select Select Service to define a new service 
in this screen.

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.

Security > Firewall > Access Control > Add New ACL Rule/Edit (continued)