How can I know which ports are open on my android device and how to close them?

Question

Is there an easy way, to see which ports are open on my Android device and a way to close the open ports?

Answer 1

1. Create a wifi hotspot on your phone
2. Connect your computer to the hotspot
3. use ipconfig or ifconfig to know the gateway IP adresse ( ie: your phone's IP adress )
4. Download nmap : http://nmap.org/
5. Use the nmap command : nmap -sS -Pn -p- your_phone_ip_adress

the open TCP ports will be shown as follow :

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65531 closed ports PORT
STATE SERVICE
53/tcp open domain
8187/tcp open unknown
38647/tcp open unknown
42761/tcp open unknown MAC Address: A4:9A:58:::** (Samsung Electronics Co.)

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• PS : For UDP ports use: nmap -sU -Pn -p- your_phone_ip_adress