port terbuka atau tertutup?

Ada yang aktif ufwdi linux-pc. Output dari nmap -sT -O localhostadalah: ` Starting Nmap 6.40 ( http://nmap.org ) at 2019-05-27 22:59 EEST Nmap scan report for localhost (127.0.0.1) Host is up (0.00019s latency). All 1000 scanned ports on localhost (127.0.0.1) are closed Warning: OSScan results may...