Description
This article explains how to configure and add custom ports and port ranges into the predefined ISDB entries.
Scope
FortiGate.
Solution
Multiple ports can be configured as individual services if required.
Use the new CLI config firewall internet-service-addition command in system global to tune ISDB for the environment.
To add a custom port range in the global:
config firewall internet-service-addition
edit 65646
set comment "Add custom port-range:tcp/8080-8090 into 65646"
config entry
edit 1
set protocol 6 "to edit TCP custom port range"
config port-range
edit 1
set start-port 8080
set end-port 8090
next
end
edit 2
set protocol 17 "to edit UDP custom port range"
config port-range
edit 1
set start-port 9080
set end-port 9090
next
end
next
end
To execute internet-service refresh to apply the change:
FGT-201E (65646) # end
Warning: Configuration will only be applied after rebooting or using the 'execute internet-service refresh' command.
FGT-201E (global) # execute internet-service refresh
The Internet Service database is refreshed. To verify that the change was applied:
FGT-201E (global) # diagnose internet-service info FG-traffic 6 8080 2.20.183.160
Internet Service: 65646(Google.Gmail)
FGT-201E (global) #
Related article:
The Fortinet Security Fabric brings together the concepts of convergence and consolidation to provide comprehensive cybersecurity protection for all users, devices, and applications and across all network edges.
Copyright 2025 Fortinet, Inc. All Rights Reserved.