diy_rfc2136_dyndns_with_bind

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diy_rfc2136_dyndns_with_bind [29.10.2013 14:01] – Pascal Suterdiy_rfc2136_dyndns_with_bind [25.06.2021 08:17] – [DIY RFC2136 dyndns with bind] Pascal Suter
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  900        ; refresh (15 minutes)  900        ; refresh (15 minutes)
  600        ; retry (10 minutes)  600        ; retry (10 minutes)
- 2600       ; expire (43 minutes 20 seconds)+ 604800     ; expire (1 Week)
  30         ; minimum (30 seconds)  30         ; minimum (30 seconds)
  )  )
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  };   }; 
 }; };
-</code> **note** keep the //add_keys_here// comment exactly as it is, this is the marker for our script so it knows where to add new keys+</code bash add_new_host.sh> **note** keep the //add_keys_here// comment exactly as it is, this is the marker for our script so it knows where to add new keys
   * edit your main named.conf file, usually in /etc/bind/named.conf and add an include line at the end of your zone definitions like so: <code>include "/etc/bind/dyn/named.conf";</code>   * edit your main named.conf file, usually in /etc/bind/named.conf and add an include line at the end of your zone definitions like so: <code>include "/etc/bind/dyn/named.conf";</code>
   * create the "add_new_host.sh" script that will add new hosts to our setup. here are the contents of the script: <code>   * create the "add_new_host.sh" script that will add new hosts to our setup. here are the contents of the script: <code>
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 </code> </code>
   * now use the script to add your first hostname. <code>./add_new_host myhost</code>if you did everything correctly (and if i described it all correctly) your client should now be able to update it's own dns entry with the key you received back from the script.    * now use the script to add your first hostname. <code>./add_new_host myhost</code>if you did everything correctly (and if i described it all correctly) your client should now be able to update it's own dns entry with the key you received back from the script. 
 +===== script to remove hosts =====
 +optionally you can also create a little script to remove hosts just as easily. create a file called remove_hosts.sh with the following contents<code>
 +#!/bin/bash
 +if [ -z "$1" -o "$1" == " " ]; then
 +        echo "usage: remove_host.sh <hostname>"
 +        echo "EXAMPLE: remove_host.sh myhost will remove myhost.dyn.mydomain.ch"
 +        exit 1
 +fi
 +cd /etc/bind/dyn/
 +hostname=${1}.dyn.mydomain.ch.
 +echo "old keys.conf entry: "
 +grep ${hostname} keys.conf
 +echo "remove key for ${hostname}"
 +cat named.conf | sed -e "/^\t\tkey ${hostname}.*$/d" | tee named.conf > /dev/null
 +cat keys.conf | sed -e "/^key ${hostname}.*$/d" | tee keys.conf > /dev/null
 +echo "reload bind";
 +/etc/init.d/bind9 reload
 +echo "currently active hosts:"
 +grep "key " named.conf | awk '{ print $2; }' | tr -d ";"
 +</code>
 +make it executable and run it to remove hotsts. **warning** make a backup of your keys.conf and your named.conf file before testing this :) 
 +  ./remove_host.sh myhost
 +
  • diy_rfc2136_dyndns_with_bind.txt
  • Last modified: 25.06.2021 12:39
  • by Pascal Suter