port 445

Hello! I am using logcheck and portsentry. I read that port 445 is something from smb and not really a reason to worry about, but well, its a external ip which wanted to "do" something. Something to worry about? Active System Attack Alerts =-=-=-=-=-=-=-=-=-=-=-=-=-= Dec 3 01:43:47 suse portsentry[5576]: attackalert: TCP SYN/Normal scan from host: pD951A6F2.dip.t-dialin.net/217.81.166.242 to TCP port: 445 Dec 3 01:43:47 suse portsentry[5576]: attackalert: Host 217.81.166.242 has been blocked via wrappers with string: "ALL: 217.81.166.242" Thanks! Spiekey