Im running OSX 10.10.5

Ive connected to a remote LAN via a dial in VPN.

For the VPN im using OSXs inbuilt VPN client and have the setting "send all traffic over VPN" enabled. The VPN works and i can communicate with the remote LAN as required, but i m having issues with a telnet connection.

I want to telnet into a device on the remote LAN via terminal to do this ive done the following :

telnet $local_IP:$port

And i get the following back in terminal

enter image description here

(Remote IP redacted)


You’re not issuing the correct command. While a host:port notation is quite common in many programs, telnet is not one of those. Instead, replace the ":" with a space. So instead, type telnet 52000.

  • Thanks @Rob de Jonge very much that worked great ! Ive now connected to the device but all commands i send and responded to with "Error Command" even though im taking the codes straight out of the API docs, do i need to prefix the commands with anything to ensure that they are sent correctly ? – sam Aug 22 '18 at 12:53
  • 1
    If you are connected, able to issue commands and getting feedback, then the VPN and telnet are doing their job. I have no idea what you’re connected to, and so I really can’t comment on what the right commands would be. I would suggest searching the web for some examples, instead of following API documentation. The experience of other users is usually much more helpful than dry manual pages. Good luck! – Rob de Jonge Aug 22 '18 at 12:58

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