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litespeed_wiki:lsmcd:new_sasl [2018/06/14 20:09]
Robert Perper
litespeed_wiki:lsmcd:new_sasl [2018/08/13 19:22] (current)
Robert Perper [Enable SASL in Your Configuration File]
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 SASL (Simple Application and Security Layer) is the method used to secure data in LSMCD and Memcached. There are various subtle differences in configuration between the two. This section describes the configuration you need to perform to allow LSMCD to operate in a SASL environment. SASL (Simple Application and Security Layer) is the method used to secure data in LSMCD and Memcached. There are various subtle differences in configuration between the two. This section describes the configuration you need to perform to allow LSMCD to operate in a SASL environment.
  
-Enabling SASL is database wide. Once SASL is enabled, all non-SASL databases will need to be regenerated. ​You will also need to regenerate your databases (the files stored in the ''​Cached.ShmDir''​ parameter of your node.conf file) if you wish to remove SASL.+Enabling SASL is database wide. Once SASL is enabled, all non-SASL databases will need to be regenerated. ​ This is only necessary if you ran LSMCD without SASL.  Regeneration is done by deleting ​the files stored in the ''​Cached.ShmDir''​ parameter of your node.conf file (defaults /​dev/​shm/​lsmcdand allow them to be recreated. You will also need to regenerate your databases ​if you wish to remove SASL.
  
-As for memcached, if you enable SASL, text telnet commands will no longer work as there is no security mechanism in telnet.+You can also secure data by user using SASL.  See [[litespeed_wiki:​lsmcd:​sasl_secure_user_data|LSMCD Secure User Data Using SASL]] for details. 
 + 
 +As for Memcached, if you enable SASL, text telnet commands will no longer work as there is no security mechanism in telnet.  The client program ''​memcapable''​ will fail all tests as it does not properly handle SASL.  If you wish to use this program to validate functionality,​ a customized version of the program is available in the distribution and can be built using instructions specified in the README.
  
 ===== Configuring SASL ===== ===== Configuring SASL =====
  
 There are a number steps to configuring LSMCD to operate with SASL: There are a number steps to configuring LSMCD to operate with SASL:
-   * Enable SASL in your ''​lsmcd.conf''​ file.+   * Enable SASL in your ''​node.conf''​ file.
    * Create and configure a user database.    * Create and configure a user database.
    * Configure any additional settings needed for PHP.    * Configure any additional settings needed for PHP.
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 In particular you need to specify in your ''​node.conf''​ file:  In particular you need to specify in your ''​node.conf''​ file: 
   CACHED.USESASL=TRUE   CACHED.USESASL=TRUE
 +
 +Note that once SASL is enabled, all failed accesses to Memcached functions are going to result in an error being written to the lsmcd log (defaults to ''/​tmp/​lsmcd.log''​). ​ As mentioned above, ASCII and telnet commands are also going to fail as well.
 +
 +When you change this value, accesses to the existing LSMCD database will fail as the system will detect a mismatch between your prior SASL configuration and your current one.  You will need to delete your LSMCD data files: <​code>​rm -rf /​dev/​shm/​lsmcd</​code>​
  
 ==== Create and Configure a User Database ==== ==== Create and Configure a User Database ====
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 To create a user named ''​user1''​ enter ''​saslpasswd2 user1''​. ​ You will be prompted for the password twice for that user.  That information will then need to be coded in your memcached program. ​ Details on the use of saslpasswd2 can be found in numerous places on the internet including [[https://​www.gsp.com/​cgi-bin/​man.cgi?​section=8&​topic=saslpasswd2|gsp.com]]. To create a user named ''​user1''​ enter ''​saslpasswd2 user1''​. ​ You will be prompted for the password twice for that user.  That information will then need to be coded in your memcached program. ​ Details on the use of saslpasswd2 can be found in numerous places on the internet including [[https://​www.gsp.com/​cgi-bin/​man.cgi?​section=8&​topic=saslpasswd2|gsp.com]].
 +
 +You can use either the simple user name or the realm qualified name visible in ''​sasldblistusers2''​ (the name with the ''​@hostname''​ appended to it).  Note that for user managed data it will use the name specified (which means the realm qualified and unqualified names will be separate).
  
 === Option #2: MEMCACHED_SASL_PWDB Environment Variable === === Option #2: MEMCACHED_SASL_PWDB Environment Variable ===
 
litespeed_wiki/lsmcd/new_sasl.1529006990.txt.gz · Last modified: 2018/06/14 20:09 by Robert Perper