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Security Enhanced Linux Reference Policy
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<div id="Header">Security Enhanced Linux Reference Policy</div>
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userdomain</a><br/>
</div>
<br/><p/>
<a href="global_booleans.html">* Global Booleans </a>
<br/><p/>
<a href="global_tunables.html">* Global Tunables </a>
<p/><br/><p/>
<a href="index.html">* Layer Index</a>
<br/><p/>
<a href="interfaces.html">* Interface Index</a>
<br/><p/>
<a href="templates.html">* Template Index</a>
</div>
<div id="Content">
<h3>Global tunables:</h3>
<div id="interface">
<div id="codeblock">allow_execmem</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow making anonymous memory executable, e.g.
for runtime-code generation or executable stack.
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">allow_execmod</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow making a modified private file
mapping executable (text relocation).
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">allow_execstack</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow making the stack executable via mprotect.
Also requires allow_execmem.
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">allow_gpg_execstack</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow gpg executable stack
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">allow_kerberos</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow system to run with kerberos
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">allow_ssh_keysign</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
allow host key based authentication
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">allow_user_mysql_connect</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow users to connect to mysql
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">allow_ypbind</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow system to run with NIS
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">cron_can_relabel</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow system cron jobs to relabel filesystem
for restoring file contexts.
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">fcron_crond</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Enable extra rules in the cron domain
to support fcron.
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">named_write_master_zones</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow BIND to write the master zone files.
Generally this is used for dynamic DNS.
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">read_default_t</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow reading of default_t files.
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">read_untrusted_content</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow applications to read untrusted content
If this is disallowed, Internet content has
to be manually relabeled for read access to be granted
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">run_ssh_inetd</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow ssh to run from inetd instead of as a daemon.
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">squid_connect_any</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow squid to connect to all ports, not just
HTTP, FTP, and Gopher ports.
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">ssh_sysadm_login</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow ssh logins as sysadm_r:sysadm_t
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">staff_read_sysadm_file</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow staff_r users to search the sysadm home
dir and read files (such as ~/.bashrc)
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">use_nfs_home_dirs</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Support NFS home directories
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">use_samba_home_dirs</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Support SAMBA home directories
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">user_direct_mouse</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow regular users direct mouse access
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">user_dmesg</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow users to read system messages.
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">user_net_control</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow users to control network interfaces
(also needs USERCTL=true)
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">user_ping</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Control users use of ping and traceroute
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">user_rw_noexattrfile</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow user to r/w noextattrfile (FAT, CDROM, FLOPPY)
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">user_rw_usb</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow users to rw usb devices
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">user_tcp_server</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow users to run TCP servers (bind to ports and accept connection from
the same domain and outside users) disabling this forces FTP passive mode
and may change other protocols.
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">user_ttyfile_stat</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow w to display everyone
</p></p>
</div></div>
<div id="interface">
<div id="codeblock">write_untrusted_content</div>
<div id="description">
<h5>Default value</h5>
<p>false</p>
<h5>Description</h5>
<p><p>
Allow applications to write untrusted content
If this is disallowed, no Internet content
will be stored.
</p></p>
</div></div>
</div>
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