1rshd_selinux(8) SELinux Policy rshd rshd_selinux(8)
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6 rshd_selinux - Security Enhanced Linux Policy for the rshd processes
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9 Security-Enhanced Linux secures the rshd processes via flexible manda‐
10 tory access control.
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12 The rshd processes execute with the rshd_t SELinux type. You can check
13 if you have these processes running by executing the ps command with
14 the -Z qualifier.
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16 For example:
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18 ps -eZ | grep rshd_t
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23 The rshd_t SELinux type can be entered via the rshd_exec_t file type.
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25 The default entrypoint paths for the rshd_t domain are the following:
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27 /usr/sbin/in.rshd, /usr/sbin/in.rexecd, /usr/kerberos/sbin/kshd
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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 rshd policy is very flexible allowing users to setup their rshd pro‐
37 cesses in as secure a method as possible.
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39 The following process types are defined for rshd:
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41 rshd_t
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43 Note: semanage permissive -a rshd_t can be used to make the process
44 type rshd_t permissive. SELinux does not deny access to permissive
45 process types, but the AVC (SELinux denials) messages are still gener‐
46 ated.
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50 SELinux policy is customizable based on least access required. rshd
51 policy is extremely flexible and has several booleans that allow you to
52 manipulate the policy and run rshd with the tightest access possible.
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56 If you want to allow all domains to execute in fips_mode, you must turn
57 on the fips_mode boolean. Enabled by default.
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59 setsebool -P fips_mode 1
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63 If you want to allow confined applications to run with kerberos, you
64 must turn on the kerberos_enabled boolean. Enabled by default.
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66 setsebool -P kerberos_enabled 1
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70 If you want to allow system to run with NIS, you must turn on the
71 nis_enabled boolean. Disabled by default.
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73 setsebool -P nis_enabled 1
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77 If you want to enable polyinstantiated directory support, you must turn
78 on the polyinstantiation_enabled boolean. Disabled by default.
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80 setsebool -P polyinstantiation_enabled 1
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85 SELinux defines port types to represent TCP and UDP ports.
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87 You can see the types associated with a port by using the following
88 command:
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90 semanage port -l
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93 Policy governs the access confined processes have to these ports.
94 SELinux rshd policy is very flexible allowing users to setup their rshd
95 processes in as secure a method as possible.
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97 The following port types are defined for rshd:
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100 rsh_port_t
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104 Default Defined Ports:
105 tcp 514
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108 The SELinux process type rshd_t can manage files labeled with the fol‐
109 lowing file types. The paths listed are the default paths for these
110 file types. Note the processes UID still need to have DAC permissions.
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112 auth_cache_t
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114 /var/cache/coolkey(/.*)?
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116 auth_home_t
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118 /root/.yubico(/.*)?
119 /root/.config/Yubico(/.*)?
120 /root/.google_authenticator
121 /root/.google_authenticator~
122 /home/[^/]+/.yubico(/.*)?
123 /home/[^/]+/.config/Yubico(/.*)?
124 /home/[^/]+/.google_authenticator
125 /home/[^/]+/.google_authenticator~
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127 faillog_t
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129 /var/log/btmp.*
130 /var/log/faillog.*
131 /var/log/tallylog.*
132 /var/run/faillock(/.*)?
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134 initrc_var_run_t
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136 /var/run/utmp
137 /var/run/random-seed
138 /var/run/runlevel.dir
139 /var/run/setmixer_flag
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141 krb5_host_rcache_t
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143 /var/tmp/krb5_0.rcache2
144 /var/cache/krb5rcache(/.*)?
145 /var/tmp/nfs_0
146 /var/tmp/DNS_25
147 /var/tmp/host_0
148 /var/tmp/imap_0
149 /var/tmp/HTTP_23
150 /var/tmp/HTTP_48
151 /var/tmp/ldap_55
152 /var/tmp/ldap_487
153 /var/tmp/ldapmap1_0
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155 lastlog_t
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157 /var/log/lastlog.*
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159 pam_var_run_t
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161 /var/(db|adm)/sudo(/.*)?
162 /var/lib/sudo(/.*)?
163 /var/run/sudo(/.*)?
164 /var/run/pam_ssh(/.*)?
165 /var/run/sepermit(/.*)?
166 /var/run/pam_mount(/.*)?
167 /var/run/pam_timestamp(/.*)?
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169 security_t
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171 /selinux
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173 user_tmp_t
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175 /dev/shm/mono.*
176 /var/run/user/[^/]+
177 /tmp/.ICE-unix(/.*)?
178 /tmp/.X11-unix(/.*)?
179 /dev/shm/pulse-shm.*
180 /tmp/.X0-lock
181 /var/run/user
182 /tmp/hsperfdata_root
183 /var/tmp/hsperfdata_root
184 /home/[^/]+/tmp
185 /home/[^/]+/.tmp
186 /var/run/user/[0-9]+
187 /tmp/gconfd-[^/]+
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189 user_tmp_type
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191 all user tmp files
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193 var_auth_t
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195 /var/ace(/.*)?
196 /var/rsa(/.*)?
197 /var/lib/abl(/.*)?
198 /var/lib/rsa(/.*)?
199 /var/lib/pam_ssh(/.*)?
200 /var/lib/pam_shield(/.*)?
201 /var/opt/quest/vas/vasd(/.*)?
202 /var/lib/google-authenticator(/.*)?
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204 wtmp_t
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206 /var/log/wtmp.*
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210 SELinux requires files to have an extended attribute to define the file
211 type.
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213 You can see the context of a file using the -Z option to ls
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215 Policy governs the access confined processes have to these files.
216 SELinux rshd policy is very flexible allowing users to setup their rshd
217 processes in as secure a method as possible.
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219 STANDARD FILE CONTEXT
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221 SELinux defines the file context types for the rshd, if you wanted to
222 store files with these types in a diffent paths, you need to execute
223 the semanage command to specify alternate labeling and then use re‐
224 storecon to put the labels on disk.
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226 semanage fcontext -a -t rshd_keytab_t '/srv/myrshd_content(/.*)?'
227 restorecon -R -v /srv/myrshd_content
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229 Note: SELinux often uses regular expressions to specify labels that
230 match multiple files.
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232 The following file types are defined for rshd:
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236 rshd_exec_t
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238 - Set files with the rshd_exec_t type, if you want to transition an ex‐
239 ecutable to the rshd_t domain.
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242 Paths:
243 /usr/sbin/in.rshd, /usr/sbin/in.rexecd, /usr/kerberos/sbin/kshd
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246 rshd_keytab_t
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248 - Set files with the rshd_keytab_t type, if you want to treat the files
249 as kerberos keytab files.
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253 Note: File context can be temporarily modified with the chcon command.
254 If you want to permanently change the file context you need to use the
255 semanage fcontext command. This will modify the SELinux labeling data‐
256 base. You will need to use restorecon to apply the labels.
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260 semanage fcontext can also be used to manipulate default file context
261 mappings.
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263 semanage permissive can also be used to manipulate whether or not a
264 process type is permissive.
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266 semanage module can also be used to enable/disable/install/remove pol‐
267 icy modules.
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269 semanage port can also be used to manipulate the port definitions
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271 semanage boolean can also be used to manipulate the booleans
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274 system-config-selinux is a GUI tool available to customize SELinux pol‐
275 icy settings.
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279 This manual page was auto-generated using sepolicy manpage .
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283 selinux(8), rshd(8), semanage(8), restorecon(8), chcon(1), sepolicy(8),
284 setsebool(8)
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288rshd 23-02-03 rshd_selinux(8)