I tried a simple perl UDP server script () instead of the actual application, but the result is the same (socket open, no data received). Wireshark is passive, as in it does not provide replay functionality.

However the application listening on the particular port fails to see any data, even though the socket is successfully open and shows up in netstat -panu output. When capturing the traffic with tcpdump, the packets are visible (checksums are correct, the destination IP and MAC match the machine's ones). First, users need to choose an active network adapter for sending packet, and then specify a packet file users can also. ,This is some secure customer environment and I can't log in to another machine in the network to try sending test UDP packets manually.,I have a problem with receiving UDP traffic on a RHEL6 server. Typically, pcap files are generated by programs like tcpdump or Wireshark. Netstat confirms that the application is listening on *:port. FortiTester tests user-defined scenarios by replaying pcap files. Older questions and answers from October 2017 and earlier can be found at.

Linux Kernel not passing through multicast UDP packetsīasically if _filter = 1, then kernel performs Strict Reverse Path validation. Ask and answer questions about Wireshark, protocols, and Wireshark development.

Replay pcap wireshark