Remote access to ERP5 installed through RPM

Hello everyone,

I installed ERP5 through RPM on a opensuse server. Everything went fine 
it seems but I can't access ERP5 even after opening all ports on my 
firewall.

I already tried the installation on my local machine and could access it 
through http://localhost:12001/erp5

Should I do something on the server so I can access ERP5 remotly?

Regards,
Jacques