No - If you are aware which programs open incoming ports. E.g. check with netstat -tulpe

Yes - If you want to make sure e.g. TCP port 22 or a webserver on 443 etc is only available from IP/Adapter xy. Or if you want to mess with filtering outgoing connections.

In Ungarn sieht man einige gestoppte EU-finanzierte Bauvorhaben, denen die EU das Geld pausiert hat wegen Korruption.

Same for my with Jerboa. At least the Version that will be released next week let‘s me sort comments by Old. The development seems to have increased a lot in the last weeks.