nmap – Network exploration tool and security / port scanner

commandline session $nmap –reason 127.0.0.1 Starting Nmap 6.00 ( http://nmap.org ) at 2013-09-06 21:58 IST Nmap scan report for localhost.localdomain (127.0.0.1) Host is up, received conn-refused (0.0013s latency). Not shown: 995 closed ports Reason: 995 conn-refused PORT STATE SERVICE REASON 22/tcp open ssh syn-ack 25/tcp open smtp syn-ack 111/tcp open rpcbind syn-ack 389/tcp open ldap …