Edge Network Router - GL-MV1000W

Note: These instructions are superseded with my CLI that I wrote to ease the configuration. I am retaining these instructions so that the curious among you can see the details behind what the Lab CLI abstracts.

Prepare for Edge Network Router Configuration

The operating system running your router is OpenWRT. Find out more here: OpenWRT

  1. If you don’t have an SSH key pair configured on your workstation, then create one now:

     ssh-keygen -t rsa -b 4096 -N "" -f ${HOME}/.ssh/id_rsa
  2. Connect to your edge router:

    For the GL-MV1000W you can connect to the WiFi. The initial SSID and passphrase are on the back of the router.

    Otherwise, connect from your workstation with a network cable.

  3. Copy your SSH public key to the router for login:

     cat ~/.ssh/id_rsa.pub | ssh root@ "cat >> /etc/dropbear/authorized_keys"
  4. Create an environment script to help configure the router:

    createEnvScript.sh -e 
    cat ${OKD_LAB_PATH}/work-dir/edge-router | ssh root@ "cat >> /root/.profile"
    rm -rf ${OKD_LAB_PATH}/work-dir
  5. Log into the router:

     ssh root@
  6. Set a root password:

  7. Create an SSH key pair:

    mkdir -p /root/.ssh
    dropbearkey -t rsa -s 4096 -f /root/.ssh/id_dropbear
  8. Disable password login:

    uci set dropbear.@dropbear[0].PasswordAuth='off'
    uci set dropbear.@dropbear[0].RootPasswordAuth='off'
    uci commit dropbear
  9. Configure the IP address:

    uci set network.lan.ipaddr="${ROUTER}"
    uci set network.lan.netmask=${NETMASK}
    uci set network.lan.hostname=router.${DOMAIN}
    uci delete network.guest
    uci delete network.wan6
    uci commit network
  10. Configure DHCP:

    uci set dhcp.lan.leasetime='5m'
    uci set dhcp.lan.start='11'
    uci set dhcp.lan.limit='19'
    uci add_list dhcp.lan.dhcp_option="6,${ROUTER}"
    uci delete dhcp.guest
    uci commit dhcp
  11. Configure a Wireless repeater to your home Wifi:

    uci delete wireless.guest2g
    uci delete wireless.sta2
    uci set wireless.radio2.disabled='0'
    uci set wireless.radio2.repeater='1'
    uci set wireless.radio2.legacy_rates='0'
    uci set wireless.radio2.htmode='HT20'
    uci set wireless.sta=wifi-iface
    uci set wireless.sta.device='radio2'
    uci set wireless.sta.ifname='wlan2'
    uci set wireless.sta.mode='sta'
    uci set wireless.sta.disabled='0'
    uci set wireless.sta.network='wwan'
    uci set wireless.sta.wds='0'
    uci set wireless.sta.ssid='Your-WiFi-SSID'  # Replace with your home WiFi router's SSID
    uci set wireless.sta.encryption='psk2'      # Replace with your home WiFi router's encryption type
    uci set wireless.sta.key='Your-WiFi-Key'    # Replace with your home WiFi router's Key
    uci commit wireless
  12. Create a Network Interface for the repeater:

    uci set network.wwan=interface
    uci set network.wwan.proto='dhcp'
    uci set network.wwan.metric='20'
    uci commit network
  13. Add the wwan network to the wan firewall zone:

    unset zone
    let i=0
    let j=1
    while [[ ${j} -eq 1 ]]
      zone=$(uci get firewall.@zone[${i}].name)
      let rc=${?}
      if [[ ${rc} -ne 0 ]]
        let j=2
       elif [[ ${zone} == "wan" ]]
         let j=0
         let i=${i}+1
    if [[ ${j} -eq 0 ]]
      uci add_list firewall.@zone[${i}].network='wwan'
      uci commit firewall
  14. Configure a Wireless Network for Your Lab:

    uci set wireless.default_radio0=wifi-iface
    uci set wireless.default_radio0.device='radio0'
    uci set wireless.default_radio0.ifname='wlan0'
    uci set wireless.default_radio0.network='lan'
    uci set wireless.default_radio0.mode='ap'
    uci set wireless.default_radio0.disabled='0'
    uci set wireless.default_radio0.ssid='OKD-LAB'
    uci set wireless.default_radio0.key='WelcomeToMyLab'
    uci set wireless.default_radio0.encryption='psk2'
    uci set wireless.default_radio0.multi_ap='1'
    uci set wireless.radio0.legacy_rates='0'
    uci set wireless.radio0.htmode='HT20'
    uci commit wireless
  15. Now restart the router:


DNS Configuration

Now, we will set up Bind to serve DNS. We will also disable the DNS functions of dnsmasq to let Bind do all the work.

  1. Connect your workstation to your new lab WiFi network, and log into the router:

    EDGE_ROUTER=$(yq e ".router" ${LAB_CONFIG_FILE})
    ssh root@${EDGE_ROUTER}
  2. Install some additional packages on your router

    opkg update && opkg install ip-full procps-ng-ps bind-server bind-tools
  3. Backup the default bind config.

    mv /etc/bind/named.conf /etc/bind/named.conf.orig
  4. Set some variables:

    CIDR=$(ip -br addr show dev br-lan label br-lan | cut -d" " -f1 | cut -d"/" -f2)
    IFS=. read -r i1 i2 i3 i4 << EOF
    net_addr=$(( ((1<<32)-1) & (((1<<32)-1) << (32 - ${CIDR})) ))
    o1=$(( ${i1} & (${net_addr}>>24) ))
    o2=$(( ${i2} & (${net_addr}>>16) ))
    o3=$(( ${i3} & (${net_addr}>>8) ))
    o4=$(( ${i4} & ${net_addr} ))
  5. Create the Bind config file:

    cat << EOF > /etc/bind/named.conf
    acl "trusted" {
    options {
    listen-on port 53 {; ${ROUTER}; };
    directory  "/data/var/named";
    dump-file  "/data/var/named/data/cache_dump.db";
    statistics-file "/data/var/named/data/named_stats.txt";
    memstatistics-file "/data/var/named/data/named_mem_stats.txt";
    allow-query     { trusted; };
    recursion yes;
    dnssec-validation yes;
    /* Path to ISC DLV key */
    bindkeys-file "/etc/bind/bind.keys";
    managed-keys-directory "/data/var/named/dynamic";
    pid-file "/var/run/named/named.pid";
    session-keyfile "/var/run/named/session.key";
    logging {
          channel default_debug {
                   file "data/named.run";
                   severity dynamic;
    zone "${DOMAIN}" {
       type master;
       file "/etc/bind/db.${DOMAIN}"; # zone file path
    zone "${NET_PREFIX_ARPA}.in-addr.arpa" {
       type master;
       file "/etc/bind/db.${NET_PREFIX_ARPA}";
    zone "localhost" {
       type master;
       file "/etc/bind/db.local";
    zone "127.in-addr.arpa" {
       type master;
       file "/etc/bind/db.127";
    zone "0.in-addr.arpa" {
       type master;
       file "/etc/bind/db.0";
    zone "255.in-addr.arpa" {
       type master;
       file "/etc/bind/db.255";
  6. Create the forward lookup zone:

    cat << EOF > /etc/bind/db.${DOMAIN}
    @       IN      SOA     router.${DOMAIN}. admin.${DOMAIN}. (
                3          ; Serial
                604800     ; Refresh
                86400     ; Retry
                2419200     ; Expire
                604800 )   ; Negative Cache TTL
    ; name servers - NS records
       IN      NS     router.${DOMAIN}.
    ; name servers - A records
    router.${DOMAIN}.         IN      A      ${ROUTER}
    ; ${NETWORK}/${CIDR} - A records
    bastion.${DOMAIN}.         IN      A      ${BASTION_HOST}
    nexus.${DOMAIN}.           IN      A      ${BASTION_HOST}

    Create the reverse lookup zone:

    cat << EOF > /etc/bind/db.${NET_PREFIX_ARPA}
    @       IN      SOA     router.${DOMAIN}. admin.${DOMAIN}. (
                                  3         ; Serial
                            604800         ; Refresh
                            86400         ; Retry
                            2419200         ; Expire
                            604800 )       ; Negative Cache TTL
    ; name servers - NS records
          IN      NS      router.${DOMAIN}.
    ; PTR Records
    1    IN      PTR     router.${DOMAIN}.
    10    IN      PTR     bastion.${DOMAIN}.
  7. Create the necessary files, and set permissions for the bind user.

    mkdir -p /data/var/named/dynamic
    mkdir /data/var/named/data
    chown -R bind:bind /data/var/named
    chown -R bind:bind /etc/bind
  8. When you have completed all of your configuration changes, you can test the configuration with the following command:


    If the output is clean, then you are ready to fire it up!

  9. First, tell dnsmasq not to hanlde DNS:

    uci set dhcp.@dnsmasq[0].domain=${DOMAIN}
    uci set dhcp.@dnsmasq[0].localuse=0
    uci set dhcp.@dnsmasq[0].cachelocal=0
    uci set dhcp.@dnsmasq[0].port=0
    uci commit dhcp
    /etc/init.d/dnsmasq restart
  10. Then, tell the router to use itself for DNS.

    uci set network.wan.dns=${ROUTER}
    uci commit network
  11. Finally, enable Bind and reboot the router:

    /etc/init.d/named enable
    /etc/init.d/named start