Offhand I'm not sure what the unsupported error is about but this blocks all transit tcp traffic:
set firewall family inet filter local_acl term terminal_access_denied from protocol tcp
As I mentioned, you need to specify the external IP's as destination, these are carrying transit traffic into your network
set firewall family inet filter local_acl term terminal_access_denied from protocol tcp
As I mentioned, you need to specify the external IP's as destination, these are carrying transit traffic into your network