Domoticz

My Domoticz installation was, until now not secured with a user/password. Resulting in a hack and switching on lights in the middle of the night. The used ip numbers are from users in China.
A learning experience.
I have now secured my Domoticz / RaspberryPi installation but in the log I still see entry's from Chinese ip numbers with the notation incoming connection. My questions are:
are the Chinese still capable of fooling around with my devices.
And so yes, what to do to prevent this

did you forward your Domoticz IP to the utside world?

to protect yourself you can install fail2ban on your rbpi (http://www.fail2ban.org/wiki/index.php/Main_Page)

if you have a programmable firewall and you are familiar with iptables, you can reject incoming connection from those IP you are quite sure are useless

I have a DD-WRT router and I have dropped an entire subnet from UCLA, Shangai, Taipei and Mumbay

Thanks for the reply's.
Unfortunately no programmable firewall. However to drop networks, there are a lot, more than 20 different ip adresses (111/5/120/189/103 etc.etc.).
The only thing that worries me is of those vandals have put a backdoor in the os of the rpi. I don't know of that is possible with the active Domoticz application.
So, now busy with the creation of a vpn, to combine the rpi remote with a remote ftp server.

I was looking at the firewall of my internet provider, but never thougt about the firewall in the pi/raspbian. Thanks for the tip.

I'm using nignix to open my domoticz to Internet. Nginx only ask password from Internet. I have no problems with this setup

Regards