ZyXEL Communications Corporation NBG6616 Benutzerhandbuch

 Chapter 17 Firewall

NBG6616 User’s Guide

See 

 for commonly used services and port numbers.

Source IP Address Enter the IP address of the computer that initializes traffic for the application or service. 

The NBG6616 applies the firewall rule to traffic initiating from this computer. 

Protocol

Select the protocol (TCP, UDP or ICMP) 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.

MAC address

This is the MAC address of the computer for which the firewall rule applies.

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 (TCP, UDP or ICMP) 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)