nmap 128.226.31.96 Starting Nmap 6.40 ( http://nmap.org ) at 2020-12-15 07:32 EST Nmap scan report for centosone.binghamton.edu (128.226.31.96) Host is up (0.051s latency). Not shown: 988 closed ports PORT STATE SERVICE 22/tcp open ssh 53/tcp open domain 80/tcp open http 111/tcp open rpcbind 443/tcp open https 631/tcp open ipp 1501/tcp open sas-3 3306/tcp open mysql 3389/tcp open ms-wbt-server 5801/tcp open vnc-http-1 5901/tcp open vnc-1 6001/tcp open X11:1 how-to-set-up-a-basic-iptables-firewall-on-centos-6 -