A TCP, UDP, and SCTP network bandwidth measurement tool.
About this app
iperf is a tool for active measurement of the maximum achievable bandwidth on IP networks. It supports tuning of various parameters related to timing, protocols, and buffers. For each test it reports the measured throughput / bitrate, loss, and other parameters.
freenginx is an effort to preserve free and open development of nginx [engine x], an HTTP and reverse proxy server, a mail proxy server, and a generic TCP/UDP proxy server, originally written by Igor Sysoev.
The B4CK.net service allows for accessing selected internal TCP services over the Internet. The service employs proxy hosts to traverse firewalls and NAT (network address translation) routers.