I can not connect with my proxy

hello all my problem is that to connect to the internet I use a proxy … when I had not installed the antivirus avast everything went well but when I install the antivirus does not allow me access through my proxy with port 53 to investigate a I read that antivirus blocking these connections, please, I need to connect to the Internet through my proxy without de-tinting the antivirus

What avast are you using?

avast premier

Is avast firewall network profile in private or puplic mode?

Does it work if you change profile?

FAQ >> https://support.avast.com/en-us/articleSearch/?searched=Firewall