Motorola WS2000 System Reference Manual page 39

7. Move rules to a higher or lower precedence by clicking the
necessary.
8. When you have finished defining the Firewall Rules, click the
Use the following information to help set the Firewall Rule fields:
• Index—The index number determines the order in which firewall rules will be executed. The rules are
executed in order from lowest index number to highest number. Use the
buttons to change the index number.
• Source IP—The Source IP range determines the origin address(es) for the firewall rule. To set the
Source IP range, click the field and a new window will pop up to enter the IP address and a second
number that indicates that number of IP numbers starting at the first address (the range). An IP address
of 0.0.0.0 indicates all IP addresses.
• Destination IP—The Destination IP range determines the target address(es) for the firewall rule. To
configure the Destination IP range, click the field and a new window will pop up to enter the IP address
and range. An IP address of 0.0.0.0 indicates all IP addresses.
• Transport—To determine the transport protocol to be filtered in the firewall rule, click the field to
choose from the list of protocols:
Transport Description
ALL This selection designates all of the protocols displayed in the table's pull-down menu, as described
below.
TCP Transmission Control Protocol (TCP) is a set of rules used with Internet Protocol (IP) to send data as
message units over the Internet. While IP handles the actual delivery of data, TCP keeps track of
individual units of data called packets. Messages are divided into packets for efficient routing
through the Internet.
UDP User Datagram Protocol (UDP) is mostly used for broadcasting data over the Internet. Like TCP, UDP
runs on top of Internet Protocol (IP) networks. Unlike TCP/IP, UDP/IP provides very few error
recovery services and methods. UDP offers a way to directly connect, and then send and receive
datagrams over an IP network.
ICMP Internet Control Message Protocol (ICMP) is tightly integrated with IP. ICMP messages, delivered
in IP packets, are used for out-of-band messages related to network operation. Because ICMP uses
IP, ICMP packet delivery is unreliable. Hosts cannot count on receiving ICMP packets for a network
problem.
AH Authentication Header (AH) is one of the two key components of IP Security Protocol (IPSec). The
other key component is Encapsulating Security Protocol (ESP), described below.
AH provides authentication, proving the packet sender really is the sender, and the data really is
the data sent. AH can be used in transport mode, providing security between two end points. Also,
AH can be used in tunnel mode, providing security like that of a Virtual Private Network (VPN).
ESP Encapsulating Security Protocol (ESP) is one of the two key components of IP Security Protocol
(IPSec). The other key component is Authentication Header (AH), described above.
ESP encrypts the payload of packets, and also provides authentication services. ESP can be used in
transport mode, providing security between two end points. Also, ESP can be used in tunnel mode,
providing security like that of a Virtual Private Network (VPN).
LAN/Subnet Configuration
Move Up or Move Down
Apply button to save changes.
Move Up and
3-11
buttons, as
Move Down