ZyXEL Communications NBG4615 User Manual

 Chapter 24 Firewall

NBG4615 User’s Guide

See 

 for commonly used services and port numbers.

Protocol

Select the protocol (ALL,TCP, UDP or BOTH) used to transport the packets for 
which you want to apply the firewall rule. 

Dest Port Range

Enter the port number/range of the destination that define the traffic type, for 
example TCP port 80 defines web traffic.

Source Port 
Range

Enter the port number/range of the source that define the traffic type, for 
example TCP port 80 defines web traffic.

Add Rule

Click Add to save the firewall rule. 

Firewall Rule

#

This is your firewall rule number. The ordering of your rules is important as rules 
are applied in turn. 

Service Name

This is a name that identifies or describes the firewall rule.

Dest IP 

This is the IP address of the computer to which traffic for the application or 
service is entering. 

Source IP 

This is the IP address of the computer from which traffic for the application or 
service is initialized. 

Protocol

This is the protocol (ALL,TCP, UDP or BOTH) used to transport the packets for 
which you want to apply the firewall rule. 

Dest Port Range

This is the port number/range of the destination that define the traffic type, for 
example TCP port 80 defines web traffic.

Source Port 
Range

This is the port number/range of the source that define the traffic type, for 
example TCP port 80 defines web traffic.

Action

Drop - Traffic matching the conditions of the firewall rule are stopped.

Delete

Click Delete to remove the firewall rule.

Cancel

Click Cancel to start configuring this screen again. 

Security > Firewall > Services (continued)