Informações da última versão: Ubuntu Linux 20.10 - Groovy Gorilla
/# sudo service cups startcups start/running
/# nmap -v localhostStarting Nmap 6.40 ( http://nmap.org ) at 2014-07-07 13:51 BRTInitiating SYN Stealth Scan at 13:51Scanning localhost (127.0.0.1) [1000 ports]Discovered open port 445/tcp on 127.0.0.1Discovered open port 80/tcp on 127.0.0.1Discovered open port 139/tcp on 127.0.0.1Completed SYN Stealth Scan at 13:51, 2.40s elapsed (1000 total ports)Nmap scan report for localhost (127.0.0.1)Host is up (0.000016s latency).Not shown: 997 closed portsPORT STATE SERVICE80/tcp open http139/tcp open netbios-ssn445/tcp open microsoft-dsRead data files from: /usr/bin/../share/nmapNmap done: 1 IP address (1 host up) scanned in 2.49 seconds Raw packets sent: 1061 (46.684KB) | Rcvd: 2125 (89.256KB)
~$ nmap -sT -p 631 localhostStarting Nmap 6.40 ( http://nmap.org ) at 2014-07-08 12:38 BRTNmap scan report for localhost (127.0.0.1)Host is up (0.000075s latency).PORT STATE SERVICE631/tcp closed ippNmap done: 1 IP address (1 host up) scanned in 0.07 seconds