Flutter webview - block the opening of specific pages

Hello! :grinning:
I have a little problem. I am during creating a mobile app with the use of webview.
The page which I want to display has a few links to external websites.
Can I somehow block the opening of specific pages or maybe setting the applicationā€™s subpage to be displayed after entering a specific pageā€¦

thank you in advance,
have a nice day!