telnet command 3389 How do I know if my port is open 3389? Open a command prompt Type in “telnet ” and press enter. For example, we would type “telnet 192.168. 8.1 3389” If a blank screen appears then the port is open, and the test is successful. How do I know if my RDP port is enabled?.ae789 lol At the command prompt, type telnet 3389, where is the name of the Terminal Server, and then press ENTER. If telnet is successful, you will receive the telnet screen and a cursor.bet88 khuyến mãi Telnet working doesn’t really tell us anything new unfortunately. telnet 3389 will let you know if it gets through on the RDP port so it does tell us that it makes it up through OSI level 3 atleast. Are you able to RDP to any other workstation with this PC? Just want to isolate if it is RDPing at all or if it is isolated to just the servers.
