markito151 / mac-telnet

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

MAC-Telnet for Posix systems

Console tools for connecting to, and serving, devices using MikroTik RouterOS MAC-Telnet protocol.

CURRENTLY UNDER DEVELOPMENT

Warning This repository is in mid-way of adding support for RouterOS v6.43 and up, which does not support the old MD5 authentication method. Expect this to be "alpha quality" for now. The new EC-SRP key sharing and authentication protocol is not implemented in mactelnetd yet.

Installation

Docker

haakonn/mactelnet contains all four programs:

docker run -it --rm --net=host haakonn/mactelnet mactelnet …
docker run -it --rm --net=host haakonn/mactelnet macping …
docker run -it --rm --net=host haakonn/mactelnet mndp …
docker run -it --rm --net=host haakonn/mactelnet mactelnetd …

Note that Docker runs containers on isolated internal networks by default. --net=host instructs Docker to provide mactelnet direct access to the host machine's network interfaces.

See Usage for more.

CentOS 7

Warning Currently untested in new version.

To install dependencies:

yum -y install wget automake gettext gettext-devel gcc make

Download source tarball, extract, compile and install:

wget http://github.com/haakonnessjoen/MAC-Telnet/tarball/master -O mactelnet.tar.gz
tar zxvf mactelnet.tar.gz
cd haakonness*/
./autogen.sh
make all install

Linux / kfreebsd

Dependencies: gcc (or similar), automake, autoconf

To install dependencies on Debian/Ubuntu based systems:

apt-get install build-essential autopoint automake autoconf libssl-dev

Download source tarball, extract, compile and install:

wget http://github.com/haakonnessjoen/MAC-Telnet/tarball/master -O mactelnet.tar.gz
tar zxvf mactelnet.tar.gz
cd haakonness*/
./autogen.sh
make all install

FreeBSD

Warning Currently untested in new version.

Dependencies: clang (gcc or similar), automake, autoconf

To install dependencies on Debian/Ubuntu based systems:

pkg install automake autoconf gettext-tools

Download source tarball, extract, compile and install:

wget http://github.com/haakonnessjoen/MAC-Telnet/tarball/master -O mactelnet.tar.gz
tar zxvf mactelnet.tar.gz
cd haakonness*/
./autogen.sh
./configure LDFLAGS=" -L/usr/local/lib"
gmake all install

Mac OS X

Install dependencies, download source tarball, extract, compile and install:

wget http://github.com/haakonnessjoen/MAC-Telnet/tarball/master -O mactelnet.tar.gz
tar zxvf mactelnet.tar.gz
cd haakonness*/

# Install dependencies
brew install gettext autoconf automake libtool openssl

export GETTEXT_PATH=$(brew --prefix gettext)
export OPENSSL_PATH=$(brew --prefix openssl)

export PATH="${GETTEXT_PATH}/bin:${OPENSSL_PATH}/bin:$PATH"
export LDFLAGS="-L${GETTEXT_PATH}/lib"
export CPPFLAGS="-I${GETTEXT_PATH}/include -I${OPENSSL_PATH}/include"
export CRYPTO_CFLAGS="-I${OPENSSL_PATH}/include"
export CRYPTO_LIBS="-L${OPENSSL_PATH}/lib ${OPENSSL_PATH}/lib/libcrypto.3.dylib"
./autogen.sh
make all install

Usage

# mactelnet -h
Usage: mactelnet <MAC|identity> [-h] [-n] [-a <path>] [-A] [-t <timeout>] [-u <user>] [-p <password>] [-U <user>] | -l [-B] [-t <timeout>]

Parameters:
  MAC            MAC-Address of the RouterOS/mactelnetd device. Use mndp to
                 discover it.
  identity       The identity/name of your destination device. Uses
                 MNDP protocol to find it.
  -l             List/Search for routers nearby (MNDP). You may use -t to set timeout.
  -B             Batch mode. Use computer readable output (CSV), for use with -l.
  -n             Do not use broadcast packets. Less insecure but requires
                 root privileges.
  -a <path>      Use specified path instead of the default: ~/.mactelnet for autologin config file.
  -A             Disable autologin feature.
  -t <timeout>   Amount of seconds to wait for a response on each interface.
  -u <user>      Specify username on command line.
  -p <password>  Specify password on command line.
  -U <user>      Drop privileges to this user. Used in conjunction with -n
                 for security.
  -q             Quiet mode.
  -o             Force old authentication algorithm.
  -h             This help.

Example using identity:

$ mactelnet main-router
Searching for 'main-router'...found
Login: admin
Password:
Connecting to d4:ca:6d:12:47:13...done

Example using mac address:

$ mactelnet -u admin 0:c:42:43:58:a5
Password:
Connecting to 0:c:42:43:58:a5...done


  MMM      MMM       KKK                          TTTTTTTTTTT      KKK
  MMMM    MMMM       KKK                          TTTTTTTTTTT      KKK
  MMM MMMM MMM  III  KKK  KKK  RRRRRR     OOOOOO      TTT     III  KKK  KKK
  MMM  MM  MMM  III  KKKKK     RRR  RRR  OOO  OOO     TTT     III  KKKKK
  MMM      MMM  III  KKK KKK   RRRRRR    OOO  OOO     TTT     III  KKK KKK
  MMM      MMM  III  KKK  KKK  RRR  RRR   OOOOOO      TTT     III  KKK  KKK

  MikroTik RouterOS 6.49 (c) 1999-2021       http://www.mikrotik.com/


 [admin@Mikrotik] >

Tips

You can use the well known "expect" tool to automate/script dialogues via mactelnet!

List available hosts

# mactelnet -l

MAC-Ping usage

# macping -h
Usage: macping <MAC> [-h] [-c <count>] [-s <packet size>]

Parameters:
  MAC       MAC-Address of the RouterOS/mactelnetd device.
  -s        Specify size of ping packet.
  -c        Number of packets to send. (0 = for ever)
  -h        This help.

Example:

# macping 0:c:42:43:58:a5
0:c:42:43:58:a5 56 byte, ping time 1.17 ms
0:c:42:43:58:a5 56 byte, ping time 1.07 ms
0:c:42:43:58:a5 56 byte, ping time 1.20 ms
0:c:42:43:58:a5 56 byte, ping time 0.65 ms
0:c:42:43:58:a5 56 byte, ping time 1.19 ms

5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max = 0.65/1.06/1.20 ms

Or for use in bash-scripting:

# macping 0:c:42:43:58:a5 -c 2 >/dev/null 2>&1 || ( echo "No answer for 2 pings" | mail -s "router down" [email protected] )

Huge thanks

Thanks to @comed-ian for creating a working proof of concept python script that successfully authenticated using the new authentication method in RouterOS 4.43+, and @kmeaw for porting the code to C, and implementing it in mactelnet.