You can follow below steps to allow chrome to access the network in your firewall or antivirus settings mac.
Choose System Preferences
Click Security or Security & Privacy.
Click the Firewall tab.
Unlock the pane and enter the administrator username and password.
Click "Turn On Firewall" or "Start" to enable the firewall.
Click Advanced to customize
Hopefully above step helping to allow chrome to access the network. However, if you fail to do so then you can follow our blog to learn more about step by step instruction.