Nping

It’s often not enough to focus on latency or bandwidth utilization. Network stress testing can reveal how spikes in packet levels may impact network device performance. The WAN Killer tool in Engineer’s Toolset serves as a network stress tester by generating and sending packets to provide a realistic idea of how devices would perform in the event of sudden or extreme jumps in traffic. The information you get from a network stress test can help you figure out how to strengthen your infrastructure before serious issues occur. Being able to simulate network traffic means you can take a proactive approach to managing network performance, which is useful if, for instance, you plan to roll out a new application to your network. You can also send simulated traffic to see if your application’s traffic will receive appropriate priority. If not, you can find and resolve the issues that may stand in the way of providing the best quality of service.

FlowCoder is a WYSIWYG programming framework for prototyping, debugging, validation, fuzzing as well as functional, load, and security testing of computer networks. It allows building packets for a variety of network protocols, sending them on the wire, receiving and analyzing incoming network traffic, matching requests with replies, keeping and changing the state and much more. Local execution is the simplest case. All packets sent by FlowCoder originate on a local host. Packets coming back in response are processed there as well. Only FlowCoder IDE components run locally. A flowchart, once created, is shipped for execution to a cloud running multiple instances of the flowchart processor engine. Packets are originated and processed in a cloud. The local user gets back diagnostics and statistical data. Playing MITM in a cloud. Flowchart sees the packets passing between a pair of network end-points, and could modify them at any stack layer.