Usage of ./fglps:
-firstPort int
First port of port range to scan (1-65535) (default 1)
-host string
Host to scan
-lastPort int
Last port of port range to scan (1-65535) (default 65535)
-portTimeout int
Port timeout in seconds. (default 5)
-threads int
Thread count. (maximum simultaneous port scans) (default 65535)