What does it mean when a portscan shows a port as "tcpwrapped"?

I'm assuming that's an nmap scan or similar. TCP Wrapper is a client side software solution for Linux/BSD machines which provides firewall features. It monitors all incoming packets to the machine and if an external node attempts to connect, the software checks to see if the node is authorized based on various criteria you can specify.

I was struggling with this issue for a week and the only answer that I got was this: There's nothing to bypass there! Now I realized that it nothing really to bypass. A TCP handshake is completed when you scan but the connection will be closed by the application behind that port because you're not in the hosts who can communicate with the port. tcpwrapped is kind of an access list control behavior by a firewall running on the remote server. if there are a lot of ports showing up with tcpwrapped, porbably it's just garbage data. So just try to connect to the port with nc:

nc -v <IP> <port>

You will see that you can connect with the port or the port is really filtered or closed.