Block QUIC in 7.2.x

(2025-07-03)

To block the QUIC application signature in the CLI:

config application list
    edit "your-application-filter-profile"
        set other-application-log enable
        config entries
            edit 1
                set application 40169
                set action block
                set log enable
            next
        end
    next
end

(source)

Why?

I had a situation where QUIC connections to a site were getting dropped by UTM for some reason, while TCP connections to the same place worked fine.

If you block QUIC, the application should fail back to normap TCP (usually HTTPS).