dns

   1 dig mx bitarus.allowed.org

   1 dig mx bitarus.allowed.org @ns.bitarus.allowed.org

   1 dig -x 54.68.9.58

   1 # change apparmor in ubuntu 
   2 apt install apparmor-utils
   3 sudo aa-complain /usr/sbin/named
   4 service bind9 restart
   5 
   6 cd /tmp # bind server
   7 dnssec-keygen -a HMAC-SHA512 -b 512 -n USER rpi.dyn.bitarus.allowed.org.
   8 
   9 # secret contains the Key: value
  10 # vim /etc/bind/keys.conf
  11 key rpi.dyn.bitarus.allowed.org. {
  12     algorithm HMAC-SHA512;
  13     secret "???????";
  14 };
  15 
  16 # vim /etc/bind/named.conf
  17 include "/etc/bind/keys.conf";
  18 zone "bitarus.mooo.com" IN {
  19   type master;
  20   file "/etc/bind/bitarus.mooo.com.hosts";
  21   allow-update { key "rpi.dyn.bitarus.allowed.org."; };
  22 };
  23 
  24 #vim /etc/bind/bitarus.mooo.com.hosts
  25 $ORIGIN .
  26 $TTL 604800     ; 1 week
  27 bitarus.mooo.com        IN SOA  bitarus.mooo.com. root.bitarus.mooo.com. (
  28                                 6          ; serial
  29                                 604800     ; refresh (1 week)
  30                                 86400      ; retry (1 day)
  31                                 2419200    ; expire (4 weeks)
  32                                 604800     ; minimum (1 week)
  33                                 )
  34                         NS      bitarus.mooo.com.
  35                         A       54.68.9.58
  36                         MX      5 mail.bitarus.mooo.com.
  37 $ORIGIN bitarus.mooo.com.
  38 labs                    A       54.68.9.58
  39 
  40 sudo chgrp bind /etc/bind
  41 sudo chmod g+w /etc/bind
  42 sudo chown -R bind:bind /etc/bind
  43 service bind9 restart
  44 
  45 # In raspberry pi
  46 cd /tmp
  47 scp  user@bitarus.allowed.org:/tmp/K*dyn* . 
  48 mkdir ~/rpiDdns
  49 mv Kr* ~/rpiDdns/
  50 cd  ~/rpiDdns/
  51 chmod 0400 Krp*
  52 sudo apt update
  53 
  54 #vim nsupdate-rpi.sh
  55 logger "Running nsupdate-rpi.sh"
  56 EXT_IP=$(wget -qO- http://ifconfig.co/ip)
  57 KEY="/home/pi/rpiDdns/Krpi.dyn.bitarus.allowed.org.+165+55648.private"
  58 echo "Key: $KEY"
  59 
  60 cat <<EOF | nsupdate -k "$KEY"
  61 server bitarus.allowed.org
  62 zone bitarus.mooo.com
  63 update delete rpi.bitarus.mooo.com. A
  64 update add rpi.bitarus.mooo.com. 600 A $EXT_IP
  65 show
  66 send
  67 EOF
  68 
  69 chmod 755 nsupdate-rpi.sh
  70 crontab -e
  71 */10 * * * * /home/pi/scripts/nsupdate-rpi.sh