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Next Generation Firewall (NGFW)

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Enabling Netflow

  • 1.  Enabling Netflow

    Posted 03-16-2018 02:03

    I've been trying to enable Netflow on a firewall and I'm a little stumped.

    This is the document that I used for reference: http://kb.fortinet.com/kb/documentLink.do?externalID=FD36460

    I configured the Netflow collector IP, enabled Netflow on the interface and verified that the collector IP is in the correct rule.

    When I do a diag sys tcpsock, I don't see any connection from the firewall going to the collector IP.

    Am I missing something?



  • 2.  Enabling Netflow

    Posted 03-16-2018 02:20
    Netflow is UDP.

    Try other diagnostic command like described on the KB.

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    From: Paul Ammann via Firewall: [firewall@...
    Sent: March 16, 2018 9:03 AM
    To: firewall@lists.fusecommunity.fortinet.com
    Subject: [Firewall:] - Enabling Netflow


    I've been trying to enable Netflow on a firewall and I'm a little stumped.

    This is the document that I used for reference: http://kb.fortinet.com/kb/documentLink.do?externalID=FD36460

    I configured the Netflow collector IP, enabled Netflow on the interface and verified that the collector IP is in the correct rule.

    When I do a diag sys tcpsock, I don't see any connection from the firewall going to the collector IP.

    Am I missing something?

    -----End Original Message-----


  • 3.  RE: Enabling Netflow

    Posted 03-16-2018 04:31

    The diagnostic commands ... diagnose sniffer packet ... shows no traffic as well.

    Checked the firewall logs, and I don't see traffic to the collector IP.