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Manual Reference Pages  -  BOS_SETRESTRICTED (8)

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bos_setrestricted - place a server in restricted mode



bos setrestricted -server <machine name> -mode (0 | 1)
[-cell <cell name>] [-noauth] [-localauth] [-help]


The bos setrestricted command places the server in restricted mode. This mode increases the security of the bos server by removing access to a number of bos commands that are only used whilst configuring a system.

When a server is in restricted mode, access to bos_exec, bos uninstall, bos install, bos create, bos delete, bos prune is denied, and the use of bos getlog is limited.


Once a server has been placed in restricted mode, it may not be opened up again using a remote command. That is, bos setrestricted has no method of placing the server in unrestricted mode. Once a server is restricted, it can only be opened up again by sending it a SIGFPE, which must be done as root on the local machine.


-server <machine name> Indicates the server machine to restrict.
-mode <mode> Indicates whether to turn restricted mode off or on. Pass a 1 to turn restricted mode on, and pass a 0 to turn restricted mode off. The latter will only work if the server is already running in unrestricted mode, and thus won’t do anything immediately, but can be used to change the corresponding entry in BosConfig(5).
-cell <cell name> Names the cell in which to run the command. Do not combine this argument with the -localauth flag. For more details, see bos(8).
-noauth Assigns the unprivileged identity anonymous to the issuer. Do not combine this flag with the -localauth flag. For more details, see bos(8).
-localauth Constructs a server ticket using a key from the local /usr/local/etc/openafs/server/KeyFile file. The bos command interpreter presents the ticket to the BOS Server during mutual authentication. Do not combine this flag with the -cell or -noauth options. For more details, see bos(8).
-help Prints the online help for this command. All other valid options are ignored.


The issuer must be listed in the /usr/local/etc/openafs/server/UserList file on the machine named by the -server argument, or must be logged in as the local superuser root if the -localauth flag is included.

As noted above, this command cannot be run against servers which are already in restricted mode.


BosConfig(5), bos(8), bos_getrestricted(8)


Copyright 2009 Simon Wilkinson <>

This documentation is covered by the BSD License as written in the doc/LICENSE file. This man page was written by Simon Wilkinson for OpenAFS.

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OpenAFS BOS_SETRESTRICTED (8) 2015-10-28

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