sascha@sascha-laptop:~$ nmap ports 139/445

Starting Nmap 4.20 ( http://insecure.org ) at 2007-04-29 21:15 CEST
Failed to resolve given hostname/IP: ports.  Note that you can't use '/mask' AND '1-4,7,100-' style IP ranges
Illegal netmask value (445), must be /1 - /32 .  Assuming /32 (one host)
Invalid target host specification: 139/445
QUITTING!
sascha@sascha-laptop:~$