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How to configure TCP/0:0 in custom service

By: Author Alex Lim

Posted on

Categories Troubleshooting

This article describes the TCP/0:0 configuration in custom service.

Scope

FortiGate.

Solution

In the Firewall Policy, custom service can be configured by selecting the ‘+’ sign under Service and selecting ‘Create’.

In the Firewall Policy, custom service can be configured by selecting the '+' sign under Service and selecting 'Create'.

The parameters listed below can be adjusted. The Destination Port is set to TCP/0:0/ It is also possible to enable the Specify Source Ports TCP/0:0 service.

The parameters listed below can be adjusted. The Destination Port is set to TCP/0:0/ It is also possible to enable the Specify Source Ports TCP/0:0 service.

Once a custom service has been created, it is possible to apply it to the Firewall Policy. This TCP/0:0 is the inverse of ANY ANY. Traffic will use the source and destination ports set to 0, thereby blocking ALL services (any > 0).

Once a custom service has been created, it is possible to apply it to the Firewall Policy. This TCP/0:0 is the inverse of ANY ANY. Traffic will use the source and destination ports set to 0, thereby blocking ALL services (any > 0).