Difference between revisions of "How to ban users with quattor"

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Enter Quattor, and via a single list of banned users we can manage the ban lists on the various node types.
 
Enter Quattor, and via a single list of banned users we can manage the ban lists on the various node types.
  
'''How to add a user to the ban list?'''
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== How to add a user to the ban list? ==
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The template $L/cfg/sites/ndpf/site/banlist.tpl define a Pan variable GLOBAL_BANNED_USER_LIST, which is a list() containing the certificate DNs that should be banned. Adding a user to this list is simply a matter of adding one line with the DN (enclosed in double quotes and a comma after the second quote):
 
The template $L/cfg/sites/ndpf/site/banlist.tpl define a Pan variable GLOBAL_BANNED_USER_LIST, which is a list() containing the certificate DNs that should be banned. Adding a user to this list is simply a matter of adding one line with the DN (enclosed in double quotes and a comma after the second quote):
  
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Don't forget to give the date and reason for banning the user!
 
Don't forget to give the date and reason for banning the user!
  
Below is the summary of services and the method of banning as background information:  
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== Implementation ==
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Services that support user banning can define a variable BANNED_USER_CONFIG which points to a template that implements the formatting of the appropriate files (see "Background Information" below). These files process the data from GLOBAL_BANNED_USER_LIST and put it in the expected format.
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Currently implemented methods:
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* lcas, used by the lcg-CE. Implementation in template
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$L/cfg/grid/common/security/user-banning/lcas.tpl
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* gridmap, used by the DPM server and disk. Implementation in template
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$L/cfg/grid/common/security/user-banning/gridmap.tpl
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* gacl, used by the WMS. Implementation in template
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$L/cfg/grid/common/security/user-banning/gacl.tpl
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== Background Information ==
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Below is the summary of services and the method of banning:  
  
 
* lcg-CE, classic-SE: the banned user DNs need to be stored in /opt/edg/etc/lcas/ban_users.db and /opt/glite/etc/lcas/ban_users.db.
 
* lcg-CE, classic-SE: the banned user DNs need to be stored in /opt/edg/etc/lcas/ban_users.db and /opt/glite/etc/lcas/ban_users.db.
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* DPM: the banned user DNs need to be mapped to a non-existing Unix account in /opt/lcg/etc/lcgdm-mapfile-local.
 
* DPM: the banned user DNs need to be mapped to a non-existing Unix account in /opt/lcg/etc/lcgdm-mapfile-local.
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* CreamCE: to be investigated
  
 
* MyProxy (PX): To be completed
 
* MyProxy (PX): To be completed

Revision as of 15:16, 25 February 2010

Unfortunately, there is no universal method to ban grid users from using gLite services. Enter Quattor, and via a single list of banned users we can manage the ban lists on the various node types.


How to add a user to the ban list?

The template $L/cfg/sites/ndpf/site/banlist.tpl define a Pan variable GLOBAL_BANNED_USER_LIST, which is a list() containing the certificate DNs that should be banned. Adding a user to this list is simply a matter of adding one line with the DN (enclosed in double quotes and a comma after the second quote):

variable GLOBAL_BANNED_USER_LIST ?= list(
 "/O=banned users/O=grid/CN=Evil User",
 # this is a comment line
 # use comments to relate the banned user DN to a date and reason
 "/O=some other org/O=whatever/CN=Compromised Account",
);

Don't forget to give the date and reason for banning the user!


Implementation

Services that support user banning can define a variable BANNED_USER_CONFIG which points to a template that implements the formatting of the appropriate files (see "Background Information" below). These files process the data from GLOBAL_BANNED_USER_LIST and put it in the expected format.

Currently implemented methods:

  • lcas, used by the lcg-CE. Implementation in template

$L/cfg/grid/common/security/user-banning/lcas.tpl

  • gridmap, used by the DPM server and disk. Implementation in template

$L/cfg/grid/common/security/user-banning/gridmap.tpl

  • gacl, used by the WMS. Implementation in template

$L/cfg/grid/common/security/user-banning/gacl.tpl

Background Information

Below is the summary of services and the method of banning:

  • lcg-CE, classic-SE: the banned user DNs need to be stored in /opt/edg/etc/lcas/ban_users.db and /opt/glite/etc/lcas/ban_users.db.
  • WMS: the banned used DNs have to be present in the file /opt/glite/etc/glite_wms_wmproxy.gacl.
  • DPM: the banned user DNs need to be mapped to a non-existing Unix account in /opt/lcg/etc/lcgdm-mapfile-local.
  • CreamCE: to be investigated
  • MyProxy (PX): To be completed