Amer Networks E5Web GUI - Manual (Page 148)

This example shows how to add a TCP/UDP service, using destination port 3306, which is used by
MySQL:
Command-Line Interface
Device:/> add Service ServiceTCPUDP MySQL
DestinationPorts=3306
Type=TCP
InControl
Follow the same steps used for the Web Interface below.
Web Interface
1. Go to: Objects > Services > Add > TCP/UDP service
2. Specify a suitable name for the service, for example MySQL
3. Now enter:
• Type: TCP
• Source: 0-65535
• Destination: 3306
4. Click OK
3.3.3. ICMP Services
Another type of custom service that can be created is an ICMP Service.
The Internet Control Message Protocol (ICMP) is a protocol that is integrated with IP for error
reporting and transmitting control information. For example, the ICMP Ping feature uses ICMP to
test Internet connectivity.
ICMP Types and Codes
ICMP messages are delivered in IP packets, and includes a Message Type that specifies the format
of the ICMP message and a Code that is used to further qualify the message. For example, the
message type Destination Unreachable uses the Code parameter to specify the exact reason for
the error.
Either all ICMP message types can be accepted by a service (there are 256 possible types) or it is
possible to filter the types.
Specifying Codes
If a type is selected then the codes for that type can be specified in the same way that port
numbers are specified. For example, if the Destination Unreachable type is selected with the
comma delimited code list 0,1,2,3 then this will filter Network unreachable, Host unreachable,
Protocol unreachable and Port unreachable.
Chapter 3: Fundamentals
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