(Iperf platform for measuring network bandwidth: linux/windowsiperf is a bandwidth testing tool that helps users find problems in the network. If users suspect that their network is not running smoothly, they can run the software on each computer at the end of the network connection for a quick test. This software does not need to be installed. It can test TCP and UDP, jitter and other problems in the network. Note: some companies' security policies may consider these tools to be hacker tools. If the security personnel have doubts about this, the network administrator may wish to check with them before downloading or using these software.)