![]() ![]() ![]() I tried a simple perl UDP server script () instead of the actual application, but the result is the same (socket open, no data received). so-import-pcap ¶ A drawback to using tcpreplay is that it’s replaying the pcap as new traffic and thus the timestamps that you see in Kibana and other interfaces do not reflect the original timestamps from the pcap. 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. Once youve captured the file on the XP or Windows 7 32 bit machine, you can replay the trace on any system supporting python and pyusb. You can use tcpreplay to replay any standard pcap to the sniffing interface of your Security Onion sensor. When capturing the traffic with tcpdump, the packets are visible (checksums are correct, the destination IP and MAC match the machine's ones). ,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. Netstat confirms that the application is listening on *:port. ![]() Linux Kernel not passing through multicast UDP packetsīasically if _filter = 1, then kernel performs Strict Reverse Path validation. ![]()
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