ICMP: UDP Traffic Blocked

[Roman_Gelfand]

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

[ede_pfau]

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]

Are you saying this message comes as a result of [target firewall ip address] blocks udp port 30944? Thanks

[ede_pfau]

either the port is blocked, or there is no service listening on the other side.

[red_adair]

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.