cannot access internet with soapUI

I get the message in the start page:

Working Offline?
soapUI Pro can't access the Internet.
soapUI Pro is unable to access the Internet. This might cause some issues when doing Web Service Testing.
If you know that you need Internet Access in order to do Web Service Testing, please check you Internet Connection.

My FF works smoothly with this config:

172.16.10.3
8080
same address for all protocols

soapUI with:
172.16.10.3
8080
enable Proxy: yes

does not.

The company proxy is Squid.

May you suggest something?

Best regards
Lucio Fassio