Download Portqry !!better!! <EXTENDED - 2027>
When you run a command like portqry -n [hostname] -e [port] , you will receive one of three statuses:
PortQry maps common ports:
portqry -n dc01 -p tcp -o 135,139,445,3389 download portqry
portqry -n mydc01 -p tcp -e 389 (LDAP)