Getting a grip on network performance numbers is one of the most difficult tasks for network managers. Unlike many information technology statistics such as disk space utilization and available memory ...

Our business is connected to various outside facilities across town via fiber. We lease the fiber, and have Cisco ASA (or PIX) firewalls on each end with a VPN tunnel connecting our private networks.

In my last column I showed you how adjusting TCP window size settings can dramatically affect network throughput. In this column I'll show you how to download and install the free Iperf network ...