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On my Mac with 10.11, but it is not there for me in 10.13. Another thread recommends Using ssh and sftp instead. As a temporary solution I just copied the telnet file from my other machine. Posted 4 years ago.

Updates

About

Open source MAC Telnet client and server for connecting to Mikrotik RouterOS routers and Linux machines via MAC address.

Based on MAC-Telnet the original work of haakonnessjoen ( Håkon Nessjøen );forked the upstream version to add forwarding mode for tunneling a TCP connection through MAC-Telnet protocol, and implemented MAC-SSH client and server functionality for tunneling SSH protocol instead of implementing shell interface directly.

Unless you will be using any of the additional functionalities, I recommend using the Original Version fromhaakonnessjoen ( Håkon Nessjøen ) instead.

For information on other projects you can check my GitHub Personal Pageand GitHub Profile.

Differences

The original version implements the following:

• A Linux console tool for connecting to MikroTik RouterOS devices via theirEthernet address.
• Linux daemon that implements the MAC-Telnet server to permit connectingto Linux machines via their ethernet address.

The forked version implements additional functionality for forwarding a TCP connection through the MAC Telnet protocol. The main use case is connecting to Linux machines via their Ethernet address using the SSH protocol for security. Take note that the clients and servers running in theforwarding mode are not compatible with existing MAC-Telnet clients and servers implementing the standard mode of operation.

The forked version of the server supports two modes of operation:* Standard MAC-Telnet Server Mode* TCP Connection Forwarding Mode: Tunnels a TCP connection to a local port on the client to a specific local port on the server side through MAC-Telnet protocol. This mode of operation is used for forwarding SSH connections through the MAC-Telnet protocol.

The client supports three modes of operation:* Standard MAC-Telnet Client Mode* TCP Connection Forwarding Mode: Tunnels a specific local port on the client to the serverthrough MAC-Telnet protocol.* SSH Forwarding Mode: Apart from setting up the tunnel, the client takes care of launching the SSH client.

The SSH Forwarding Mode has the following advantages in comparison to standardMAC-Telnet:

• The_mactelnet.users_ configuration file is not needed. Instead of maintaining another set of user passwords for MAC-Telnet, the authentication mechanisms implemented ssh are used.
• Public Key Authentication works seamlessly permiting passwordless logins.
• The communication between client and server is encrypyted by SSH.
• The daemon does not require root privileges and can be run by a non-privileged user for additional security. In case the -n option is used, the serveror client must be launched as root user, but the-U option can be used to drop privileges once the initial setup phase ends.
• The server relies on the security model of SSH, instead of creating a shellenvironment itself.

Use Cases

Embedded Systems

It can be used for initial provisioning and for maintenance purposes in situations where a valid IP configuration is not available.

Might be a useful addition to the rescue mode especially of embedded systems without screens; connecting using MAC-Telnet / MAC-SSH is much more convenient then fetching and connecting a serial cable.

The Datacenter

It can be used for initial provisioning of physical and virtual servers and might serve as a rescue system, when the IP configuration of a server gets messed up for any reason.

Download

Binary Packages

The original version of the MAC-Telnet has been packaged for Debian GNU/Linuxby the original author haakonnessjoen ( Håkon Nessjøen ).You can download the deb packages for the original version from the Downloads Page of the Upstream Project.

Source Packages

The original version of the MAC-Telnet by haakonnessjoen ( Håkon Nessjøen ) canbe download from the project page of the Upstream Project.

You can download the latest development version of this code that is hosted at GitHub eitherin ZIPor TAR format.

You can also get the latest development version of the code by cloning the Git repository for the project by running:

Installation

The binary packages of the original version of the code can be installed using the packaging tools of the distribution.

Once the source code is cloned or downloaded it can be installed as follows:

Configuration

Sample upstart configuration files can be found in the config directory ofthe distribution:

• Use mactelnetd.init for starting / stopping MAC-Telnet in standard mode.
• Use macsshd.init for starting / stopping MAC-Telnet in MAC-SSH mode.

Usage

mactelnet

Usage

Examples

Establish standard MAC-Telnet session with remote box:

Forward local port 4001:

Establish SSH connection with remote box:

Establish SSH connection with remote box, forwarding additional ports using SSH Port Forwarding:

mactelnetd

Usage

Examples

Launch MAC-Telnet Daemon for receiving Standard MAC-Telnet protocol connections:

Launch MAC-Telnet Daemon for forwarding connections to local SSH Daemon listening on port 22:

Launch MAC-Telnet Daemon for forwarding connections to local SSH Daemon listeningon non-standard port 2222:

macping

Usage

Examples

mndp

Macos Install Telnet Client

Usage

Examples

Troubleshooting

Telnet Download Windows 8

Disable firewalls both on the client and server side for testing. Firewalls can block the forwarding of packets with broadcast addresses even when they arenot blocking any ports.

The server can be run in the foreground (commanline option: -f) for testing.

Credits

MAC-Telnet has originally been developed by haakonnessjoen ( Håkon Nessjøen ).

The code published on this page is a fork with some experimental features forestablishing SSH connections via MAC Address. The additional features have been implemented
by Ali Onur Uyar ([aouyar @ GitHub] (https://github.com/aouyar)).

License

MAC-Telnet is copyrighted free software made available under the terms of the GPL License Version 3 or later.

See the file LICENSE that acompanies the code for full licensing information.

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