[en] Crude port scanner

It takes less than 2 pages of code, and on a LAN, it is quick and reliable. On a WAN, it is brutal, not very reliable, but not so awful. Writing a smart portscanner is nothing but a waste of time...

• Unix version
• Linux epoll version

[en] Real men don't scan

Portscan is for the weak users who cannot open 65535 sockets at once.

• Unix version
• Linux epoll version

You'll probably need to be root to run this. And you'd better check that you have enough file descriptors on your operating system.