Network service objects identify Layer 4 traffic by protocol and port number. Use
this task to create custom network services to use when defining firewall
policies.
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Select the add icon.
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Enter a name for the new
object.
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Enter an optional description.
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Set how long the device waits before it terminates an inactive session.
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Choose the protocol that you want the service to use:
- TCP (Transmission Control Protocol) – 6
- UDP (User Datagram Protocol) – 17
- SVP (SpectraLink Voice Priority) – 119
- Custom – For this custom option, the Protocol
Number field replaces the Port Number field. Enter the protocol ID
number (1 to 255).
Note
When you use a custom protocol, a destination
port number is not required because the receiving device can use the
protocol to map the service to the appropriate
processor.
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For services that use TCP or
UDP, set the destination port number used by the receiving device to map the
service to a specific processor.
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If this service needs to make use of an application layer gateway (ALG), select
DNS, FTP, HTTP, SIP, or TFTP,
from the drop-down list, otherwise, leave this empty.
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Select Save Network
Service.