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rsfernandes
New Member
January 22, 2018
Question

How to see VPN traffic

  • January 22, 2018
  • 3 replies
  • 8464 views
Hello Guys,    Do you have a suggestion how to see the VPN traffic, not just the communication between borders but inside of this VPN ?   Many Thanks

    3 replies

    rwpatterson
    New Member
    January 22, 2018
    Please, open a new thread. Bringing a dead post from May 2008 back from the grave isn't going to buy you any useful information. Post has been split by FTNT Admin.
    ede_pfau
    SuperUser
    SuperUser
    January 22, 2018

    AFAIK decrypting encrypted traffic is not feasable with onboard tools in FortiOS. But you can sniff the traffic before it enters the tunnel, or after it leaves it.

    That's the whole point in IPsec - confidentiality!

    lorenzhope
    New Member
    January 30, 2018

    I think you can use the cli with the following command:

    diag sniffer packet <interface_name> "any kind of filter (per example: host 192.168.1.1 and icmp)"

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