====== Connecting FreshTomato to Zerotier ======

ZeroTier lets you build modern, secure, multi-point virtualized networks of almost any type. From robust peer-to-peer networking to multi-cloud mesh infrastructure, you can achieve global connectivity as easily as setting up a local LAN.

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  - Register an account on the Zerotier website. [[https://www.zerotier.com/|Zerotier]]
  - Create a network on [[https://my.zerotier.com/|ZeroTier Central]]
  - Note down the network ID
  - Use [[entware_installation_usage|Entware]] to install Zerotier on your router. (At the command line, type "opkg install zerotier").
  - If your router is MIPS-based, the Zerotier version may be very old (~ 1.1.4). If so, it can't use some functions such as 'join orbit'. \\ Download the newest version  [[https://github.com/rampageX/arm-static-bins/raw/master/ZeroTierOne/1.10.6/mipsel/zerotier-one|ZeroTierOne 1.10.6 mipsel static-bin]] and use it to replace the old version.
  - Use the script below to control Zerotier operation. You can auto-start the daemon, join the network, stop, unload tun and more.
  - (Replace the NETWORK_ID in this script with your own).

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<code bash>
#!/bin/sh


PREFIX="/opt/bin"
NAME="zerotier-one"
CTL_NAME="zerotier-cli"
FRIENDLY="ZeroTier ONE"
NETWORK_ID="e4da3344b2c13e80"
WORKING_DIR="/opt/var/lib/zerotier-one"
CMDLINE="-d $WORKING_DIR"
LOG_FILE="/var/log/${NAME}.log"


alias elog="logger -t $NAME -s"


COND=$1
[ $# -eq 0 ] && COND="start"


start() {
    if [ -n "$(pidof $NAME)" ]; then
        elog "$FRIENDLY is already running."
        exit 1
    fi
    elog "Starting $FRIENDLY Services: "
    lsmod | grep -q "tun" || modprobe tun
    $PREFIX/$NAME $CMDLINE
    sleep 5
    $PREFIX/$CTL_NAME join ${NETWORK_ID}
    if [ "$?" = "0" ]; then
        elog "succeeded."
    else
        elog "failed."
    fi
}


stop() {
    if [ ! -n "$(pidof $NAME)" ]; then
        elog "$FRIENDLY is not running."
    fi
    elog "Shutting down $FRIENDLY Services: "
    killall -SIGTERM "$NAME"
    sleep 5
    lsmod | grep -q "tun" && modprobe -r tun
    if [ "$?" = "0" ]; then
        elog "succeeded."
    else
        elog "failed."
    fi
}


do_info() {
    elog "Starting $FRIENDLY Services info mode: "
    $PREFIX/$CTL_NAME info
}


do_restart() {
    stop
    sleep 3
    start
}


case "$COND" in
start)
    start
    ;;
stop)
    stop
    ;;
restart)
    do_restart
    ;;
info)
    do_info
    ;;
*)
    elog "Usage: $0 (start|stop|restart|info)"
    ;;
esac
exit 0
</code>

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When zerotier runs and has finished joining the network, go to ZeroTier Central and authorize the new (router) device. This completes the setup process.

Check the [[https://zerotier.atlassian.net/wiki/spaces/SD/overview?homepageId=163911|ZeroTier Knowledge Base]] for more info about Zerotier.

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