Custom Ip Protocol Services; Adding An Ip Protocol Service - D-Link NetDefend DFL-210 User Manual

3.2.4. Custom IP Protocol Services

• Code 2: Protocol Unreachable
• Code 3: Port Unreachable
• Code 4: Cannot Fragment
• Code 5: Source Route Failed
• Redirect: the source is told that there is a better route for a particular packet. Codes assigned are
as follows:
• Code 0: Redirect datagrams for the network
• Code 1: Redirect datagrams for the host
• Code 2: Redirect datagrams for the Type of Service and the network
• Code 3: Redirect datagrams for the Type of Service and the host
• Parameter Problem: identifies an incorrect parameter on the datagram.
• Echo Reply: the reply from the destination which is sent as a result of the Echo Request.
• Source Quenching: the source is sending data too fast for the receiver, the buffer has filled up.
• Time Exceeded: the packet has been discarded as it has taken too long to be delivered.
3.2.4. Custom IP Protocol Services
Services that run over IP and perform application/transport layer functions can be uniquely
identified by IP protocol numbers. IP can carry data for a number of different protocols. These
protocols are each identified by a unique IP protocol number specified in a field of the IP header, for
example, ICMP, IGMP, and EGP have protocol numbers 1, 2, and 8 respectively.
NetDefendOS supports these types of IP protocols by using the concept of Custom IP Protocol
Services. A Custom IP Protocol service is a service definition giving a name to an IP protocol
number. Some of the common IP protocols, such as IGMP, are already predefined in the
NetDefendOS system configuration.
Similar to the TCP/UDP port ranges described previously, a range of IP protocol numbers can be
used to specify multiple applications for one service.
Example 3.9. Adding an IP Protocol Service
This example shows how to add an IP Protocol service, with the Virtual Router Redundancy Protocol.
Command-Line Interface
gw-world:/> add Service ServiceIPProto VRRP IPProto=112
Web Interface
Tip: IP protocol numbers
The currently assigned IP protocol numbers and references are published by the
Internet Assigned Numbers Authority (IANA) and can be found at:
http://www.iana.org/assignments/protocol-numbers.
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Chapter 3. Fundamentals