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Roman_Gelfand
Roman_Gelfand
New Member
July 3, 2011
Question

ICMP: UDP Traffic Blocked

  • July 3, 2011
  • 4 replies
  • 9700 views
I have fortigate 50b os 4 I am getting the following message... 136.860441 [fortigate wan1 ip address] -> [target firewall ip address]: icmp: [fortigate wan1 ip address] udp port 30944 unreachable What is the issue here and how can I fix this? Thanks in advance

    4 replies

    ede_pfau
    SuperUser
    ede_pfau
    SuperUser
    July 4, 2011
    Hi, it looks like traffic for destination port 30944 is going out and the remote side has no service with that port number listening. What does 30944 tell you? Do you have custom services declared? Any IP pool involved?
    Roman_Gelfand
    Roman_GelfandAuthor
    New Member
    July 4, 2011
    Are you saying this message comes as a result of [target firewall ip address] blocks udp port 30944? Thanks
    ede_pfau
    SuperUser
    ede_pfau
    SuperUser
    July 4, 2011
    either the port is blocked, or there is no service listening on the other side.
    red_adair
    red_adair
    New Member
    July 5, 2011
    Likely no FW issue, as a FW would not (normally) send a ICMP unreachable back but simply drop the UDP Packet. So it' s likely the Target Sytem that sends this back. -R.
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