nmap

remote@host:~# nmap [my_public_ip]

Starting Nmap 5.21 ( http://nmap.org ) at 2014-12-05 03:50 UTC
Nmap scan report for [my_public_ip]
Host is up (0.026s latency).
rDNS record for [my_public_ip]
All 1000 scanned ports on [my_public_ip] are filtered

Nmap done: 1 IP address (1 host up) scanned in 32.66 seconds
remote@host:~#

==============================================================================
local@host:~# nmap 192.168.1.10

Starting Nmap 5.21 ( http://nmap.org ) at 2014-12-04 22:49 EST
Nmap scan report for 192.168.1.10
Host is up (0.00012s latency).
Not shown: 991 closed ports
PORT     STATE SERVICE
22/tcp   open  ssh
53/tcp   open  domain
80/tcp   open  http
139/tcp  open  netbios-ssn
445/tcp  open  microsoft-ds
5050/tcp open  mmcc
8080/tcp open  http-proxy
8081/tcp open  blackice-icecap
9091/tcp open  unknown

Nmap done: 1 IP address (1 host up) scanned in 0.15 seconds
local@host:~#