Hello everyone, I’m using an Android app that sends broadcast UDP messages to all the hosts on the subnet.
So what I do on my laptop, which is running openSUSE 12.3, is open a terminal and type:
nc -luv 192.168.0.255 9000
The thing is: If I stop the firewall the messages arrive, if I enable it they don’t.
I tried adding a rule to the Broadcast section on the YaST Firewall GUI with the following parameters:
- Zone: external
- Network: 0/0
- Service: custom
- Protocol: UDP
- Port: 9000
According to my packet sniffer (Wireshark), the packages have the following properties:
Source: 192.168.0.100 // Note: this is the ip of my android device running the app
Source port: 9003 (9003)
Destination port: clistener (9000)
Which rule should I apply? I don’t want to enable/disable my firewall everytime I use this app, and I don’t want to leave it disabled.
Beforehand, thank you for all the help you can provide. Greetings!