This page refers to functionality that has been removed from License Statistics. Apache HTTP Server has been removed from License Statistics as of v6.0.

Limitations for using port 80 on Linux

For Linux, you can use port 80 only if you have root privileges, because ports with numbers lower than 1024 cannot be bound without root privileges. This is a security precaution in most kernels. If you do not have root privileges, use a port with a number higher than 1024.