How to monitor OpenFlow messages with packet sniffer

As a key enabler for software-defined networking (SDN), OpenFlow was initially introduced in the academia as a way to enable innovation on production networks which had traditionally been built with closed and proprietary networking hardware. OpenFlow offloads the high-level routing/forwarding decisions (control plane) from networking devices such as switches, and moves the control plane on […]
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How to filter, split or merge pcap files on Linux

If you are a network admin who is involved in testing an intrusion detection system or network access control policy, you may often rely on offline analysis using collected packet dumps. When it comes to storing packet dumps, libpcap’s packet dump format (pcap format) is the most widely used by many open-source packet sniffing and […]
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