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Ashik_Sheik
Contributor II

Created on ‎06-13-2022 02:01 AM

Cisco ERSPAN - To FortiGate (IDS) Interface

Hello,

 

The design is to get ERSPAN traffic from Cisco to FortiGate Interface to act like IDS. How to achieve this and what configuration needs to enable on FortiGate. Is GRE mandatory?

 

Regards,

 

Ashu

Sheik Mahammad Ashik
Sheik Mahammad Ashik
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rarumugam
Staff
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Created on ‎06-14-2022 06:49 AM

Hello Ashu,

 

As I understand, you would like FortiGate to operate as an IDS appliance( i.e. without actually processing the packets). Correct me, If I am wrong.

 

You could put the FortiGate in one-arm sniffer mode and it would serve the purpose. Below is the link to configure it on the FortiGate,

 

https://docs.fortinet.com/document/fortigate/6.0.0/handbook/430641/one-armed-sniffer

 

Regards,

Ram.

Rambharathi Arumugam
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