unbound/pythonmod/doc/usecase.rst

   1 Use cases (examples)
   2 ====================
   3
   4 Dynamic DNS Service discovery (DNS-SD_)
   5 -------------------------------------------
   6 Synchronized with database engine, for example *MySQL*.
   7
   8 .. _DNS-SD: http://www.dns-sd.org/
   9
  10 Firewall control
  11 ----------------
  12 Control firewall (e.g. enable incomming SSH connection) with DNS query signed with private key.
  13 So firewall can blocks every service during normal operation.
  14
  15 Scriptable DNS-based blacklist (DNS-BL_)
  16 -------------------------------------------
  17 Scripted in Python with already provided features, takes advantage of DNS reply, because
  18 almost every mail server supports DNS based blacklisting.
  19
  20 .. _DNS-BL: http://www.dnsbl.org
  21
  22 DNS based Wake-On-Lan
  23 ---------------------
  24 Controled by secured queries secured with private key.
  25
  26 Dynamic translation service
  27 ---------------------------
  28 DNS request can be translated to virtualy any answer, that's easy to implement in client side
  29 because of many DNS libraries available.
  30
  31 Examples :
  32  * **Dictionary** - using *IDN* for non-ascii strings transfer, ``dig TXT slovo.en._dict_.nic.cz`` returns translation of "slovo" to EN.
  33  * **Translation** - Extends *DNS-SD*, for example DNS to Jabber to find out people logged in.
  34  * **Exchange rate calculator** - ``dig TXT 1000.99.czk.eur._rates_.nic.cz`` returns the given sum (1000.99 CZK) in EURs.
  35
  36 Dynamic ENUM service
  37 --------------------
  38 Support for redirection, synchronization, etc.