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Jailing Bind(Named) User in Ubuntu


Exact step that i followed to jail bind user in ubuntu12.04.You can use following steps for almost any debian system.To known more about what is jailing ?? go to this link.
To known more about how to break a jail follow this link

  1.      echo "/named/jail is our jail directory"
  2.      echo "inside it create a linux filesystem environment"
  3.      ls -l 
  4.      cd dev
  5.      mknod null c 1 3
  6.      mknod zero c 1 5
  7.      mknod random c 1 8
  8.      ls -lk
  9.      clear
  10.      cd ..
  11.      cd /etc/
  12.      ls -l
  13.      cd /named/jail/
  14.      cd etc  
  15.      ls -l
  16.      echo"move bind folder from /etc/bind to /named/jail/etc/bind"
  17.      echo "move bind folder from /etc/bind to /named/jail/etc/bind"
  18.      clear
  19.      nano /etc/default/bind9 
  20.      clear
  21.      ls -l
  22.      cd bind/
  23.      ls -l
  24.      /etc/init.d/bind9 restart
  25.      echo "it didnt started...lets troubleshoot"
  26.      cat /var/log/syslog | tail -30
  27.      /etc/init.d/apparmor stop
  28.      clear
  29.      /etc/init.d/bind9 restart
  30.      cat /var/log/syslog | tail -30
  31.      cd ..
  32.      cd var
  33.      mkdir cache
  34.      cd cache/
  35.      mkdir bind
  36.      chown root:bind bind
  37.      /etc/init.d/bind9 restart
  38.      echo "something is still wrong"
  39.      cat /var/log/syslog | tail -30
  40.      cd ..
  41.      mkdir run
  42.      cd run/
  43.      mkdir bind
  44.      chown root:bind bind
  45.      cd bind/
  46.      mkdir run
  47.      cd run
  48.      /etc/init.d/bind9 restart
  49.      echo "again failed to start"
  50.      cat /var/log/syslog | tail -30
  51.      cd ..
  52.      ls -l
  53.      chown root:bind run
  54.      ls -l
  55.      /etc/init.d/bind9 restart
  56.      cat /var/log/syslog | tail -30
  57.      ls -l
  58.      chmod 770 run
  59.      cd ..
  60.      ls -l
  61.      chmod 770 bind
  62.      /etc/init.d/bind9 restart     
  63.      netstat -unlp | grep 53
  64.      netstat -unlp | grep -iw 53
  65.      echo "now we have successfully jailed our bind server and its user bind "
  66.      echo "for more info goto my youtube channel"
  67.      echo ";-)"

If you have any query or problem regarding above steps then just leave a comment below.HAPpY Holidays ;-)


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