ZyXEL Communications FMG3024-D10A User Manual

 Chapter 13 Firewall

FMG3024-D10A / FMG3025-D10A Series User’s Guide

The following table describes the labels in this screen.

Use this screen to view the configured service list. To access this screen, click Security > Firewall 
> Services. You have to configure at least one service in this screen before configuring the 
Security > Firewall > Access Control > Add New ACL Rule/Edit screen.

Security > Firewall > Services

Each field is described in the following table.

Security > Firewall > General 

Firewall

Select Enable to activate the firewall. The Device performs access control and 
protects against Denial of Service (DoS) attacks when the firewall is activated.

Easy, Medium, 
High

Select Easy to have the firewall allow both LAN-to-WAN and WAN-to-LAN traffic 
to flow through the Device.

Select Medium to have the firewall only allow traffic sent from the LAN to the 
WAN. All access and traffic originating from the WAN will be blocked.

Select High to have the firewall only allow Telnet, FTP, HTTP, HTTPS, DNS, POP3, 
and SMTP traffic sent from the LAN to the WAN. Other traffic will be blocked.

Apply

Click Apply to save your changes.

Cancel

Click Cancel to restore your previously saved settings.

Security > Firewall > Services

Add New Service 
Entry

Click this to define a new service.

Name

This is the name of a configured service.

Type

This is the protocol type (TCP, UDP, ICMP or Others) of the service.

Port Number

This displays a range of port numbers that defines the service.

Modify

Click the Edit icon to edit the service.

Click the Delete icon to delete the service. Note that subsequent rules move up by one 
when you take this action. Deleting a service rule also deletes the related ACL rules which 
are configured in the Security > Firewall > Access Control screen.