irc_selinux(8)

1irc_selinux(8)                SELinux Policy irc                irc_selinux(8)
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NAME

6       irc_selinux - Security Enhanced Linux Policy for the irc processes
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DESCRIPTION

9       Security-Enhanced  Linux  secures the irc processes via flexible manda‐
10       tory access control.
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12       The irc processes execute with the irc_t SELinux type. You can check if
13       you  have  these processes running by executing the ps command with the
14       -Z qualifier.
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16       For example:
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18       ps -eZ | grep irc_t
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ENTRYPOINTS

23       The irc_t SELinux type can be entered via the irc_exec_t file type.
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25       The default entrypoint paths for the irc_t domain are the following:
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27       /usr/bin/[st]irc, /usr/bin/ircII, /usr/bin/irssi, /usr/bin/tinyirc
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PROCESS TYPES

30       SELinux defines process types (domains) for each process running on the
31       system
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33       You can see the context of a process using the -Z option to ps
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35       Policy  governs  the  access confined processes have to files.  SELinux
36       irc policy is very flexible allowing users to setup their irc processes
37       in as secure a method as possible.
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39       The following process types are defined for irc:
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41       irc_t
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43       Note: semanage permissive -a irc_t can be used to make the process type
44       irc_t permissive. SELinux does not deny access  to  permissive  process
45       types, but the AVC (SELinux denials) messages are still generated.
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BOOLEANS

49       SELinux  policy  is  customizable  based on least access required.  irc
50       policy is extremely flexible and has several booleans that allow you to
51       manipulate the policy and run irc with the tightest access possible.
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55       If  you want to determine whether irc clients can listen on and connect
56       to any unreserved TCP ports, you must turn on the irc_use_any_tcp_ports
57       boolean. Disabled by default.
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59       setsebool -P irc_use_any_tcp_ports 1
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63       If you want to allow users to resolve user passwd entries directly from
64       ldap rather then using a sssd server, you  must  turn  on  the  authlo‐
65       gin_nsswitch_use_ldap boolean. Disabled by default.
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67       setsebool -P authlogin_nsswitch_use_ldap 1
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71       If  you  want  to deny any process from ptracing or debugging any other
72       processes, you  must  turn  on  the  deny_ptrace  boolean.  Enabled  by
73       default.
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75       setsebool -P deny_ptrace 1
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79       If  you  want  to  allow  any  process  to mmap any file on system with
80       attribute file_type, you must turn on the  domain_can_mmap_files  bool‐
81       ean. Enabled by default.
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83       setsebool -P domain_can_mmap_files 1
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87       If  you want to allow all domains write to kmsg_device, while kernel is
88       executed with systemd.log_target=kmsg parameter, you must turn  on  the
89       domain_can_write_kmsg boolean. Disabled by default.
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91       setsebool -P domain_can_write_kmsg 1
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95       If you want to allow all domains to use other domains file descriptors,
96       you must turn on the domain_fd_use boolean. Enabled by default.
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98       setsebool -P domain_fd_use 1
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102       If you want to allow all domains to have the kernel load  modules,  you
103       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
104       default.
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106       setsebool -P domain_kernel_load_modules 1
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110       If you want to allow all domains to execute in fips_mode, you must turn
111       on the fips_mode boolean. Enabled by default.
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113       setsebool -P fips_mode 1
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117       If you want to enable reading of urandom for all domains, you must turn
118       on the global_ssp boolean. Disabled by default.
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120       setsebool -P global_ssp 1
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124       If you want to allow confined applications to run  with  kerberos,  you
125       must turn on the kerberos_enabled boolean. Enabled by default.
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127       setsebool -P kerberos_enabled 1
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131       If  you  want  to  allow  system  to run with NIS, you must turn on the
132       nis_enabled boolean. Disabled by default.
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134       setsebool -P nis_enabled 1
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138       If you want to allow confined applications to use nscd  shared  memory,
139       you must turn on the nscd_use_shm boolean. Disabled by default.
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141       setsebool -P nscd_use_shm 1
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145       If  you want to support ecryptfs home directories, you must turn on the
146       use_ecryptfs_home_dirs boolean. Disabled by default.
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148       setsebool -P use_ecryptfs_home_dirs 1
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152       If you want to support fusefs home directories, you must  turn  on  the
153       use_fusefs_home_dirs boolean. Disabled by default.
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155       setsebool -P use_fusefs_home_dirs 1
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159       If  you  want  to  support  NFS  home directories, you must turn on the
160       use_nfs_home_dirs boolean. Disabled by default.
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162       setsebool -P use_nfs_home_dirs 1
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166       If you want to support SAMBA home directories, you  must  turn  on  the
167       use_samba_home_dirs boolean. Disabled by default.
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169       setsebool -P use_samba_home_dirs 1
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PORT TYPES

174       SELinux defines port types to represent TCP and UDP ports.
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176       You  can  see  the  types associated with a port by using the following
177       command:
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179       semanage port -l
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182       Policy governs the access  confined  processes  have  to  these  ports.
183       SELinux  irc  policy is very flexible allowing users to setup their irc
184       processes in as secure a method as possible.
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186       The following port types are defined for irc:
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189       ircd_port_t
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193       Default Defined Ports:
194                 tcp 6667,6697
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MANAGED FILES

197       The SELinux process type irc_t can manage files labeled with  the  fol‐
198       lowing  file  types.   The paths listed are the default paths for these
199       file types.  Note the processes UID still need to have DAC permissions.
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201       cifs_t
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204       ecryptfs_t
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206            /home/[^/]+/.Private(/.*)?
207            /home/[^/]+/.ecryptfs(/.*)?
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209       fusefs_t
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211            /var/run/user/[^/]*/gvfs
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213       irc_home_t
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215            /home/[^/]+/.irssi(/.*)?
216            /home/[^/]+/irclog(/.*)?
217            /home/[^/]+/.ircmotd
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219       irc_tmp_t
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222       nfs_t
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225       user_home_t
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227            /home/[^/]+/.+
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FILE CONTEXTS

231       SELinux requires files to have an extended attribute to define the file
232       type.
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234       You can see the context of a file using the -Z option to ls
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236       Policy  governs  the  access  confined  processes  have to these files.
237       SELinux irc policy is very flexible allowing users to setup  their  irc
238       processes in as secure a method as possible.
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240       STANDARD FILE CONTEXT
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242       SELinux  defines  the  file context types for the irc, if you wanted to
243       store files with these types in a diffent paths, you  need  to  execute
244       the  semanage  command  to  sepecify  alternate  labeling  and then use
245       restorecon to put the labels on disk.
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247       semanage fcontext -a -t irc_tmp_t '/srv/myirc_content(/.*)?'
248       restorecon -R -v /srv/myirc_content
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250       Note: SELinux often uses regular expressions  to  specify  labels  that
251       match multiple files.
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253       The following file types are defined for irc:
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257       irc_conf_t
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259       - Set files with the irc_conf_t type, if you want to treat the files as
260       irc configuration data, usually stored under the /etc directory.
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264       irc_exec_t
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266       - Set files with the irc_exec_t type, if you want to transition an exe‐
267       cutable to the irc_t domain.
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270       Paths:
271            /usr/bin/[st]irc, /usr/bin/ircII, /usr/bin/irssi, /usr/bin/tinyirc
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274       irc_home_t
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276       - Set files with the irc_home_t type, if you want to store irc files in
277       the users home directory.
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280       Paths:
281            /home/[^/]+/.irssi(/.*)?,                /home/[^/]+/irclog(/.*)?,
282            /home/[^/]+/.ircmotd
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285       irc_tmp_t
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287       - Set files with the irc_tmp_t type, if you want to store irc temporary
288       files in the /tmp directories.
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292       Note: File context can be temporarily modified with the chcon  command.
293       If  you want to permanently change the file context you need to use the
294       semanage fcontext command.  This will modify the SELinux labeling data‐
295       base.  You will need to use restorecon to apply the labels.
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COMMANDS

299       semanage  fcontext  can also be used to manipulate default file context
300       mappings.
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302       semanage permissive can also be used to manipulate  whether  or  not  a
303       process type is permissive.
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305       semanage  module can also be used to enable/disable/install/remove pol‐
306       icy modules.
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308       semanage port can also be used to manipulate the port definitions
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310       semanage boolean can also be used to manipulate the booleans
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313       system-config-selinux is a GUI tool available to customize SELinux pol‐
314       icy settings.
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AUTHOR

318       This manual page was auto-generated using sepolicy manpage .
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