1tcsd_selinux(8) SELinux Policy tcsd tcsd_selinux(8)
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6 tcsd_selinux - Security Enhanced Linux Policy for the tcsd processes
7
9 Security-Enhanced Linux secures the tcsd processes via flexible manda‐
10 tory access control.
11 The tcsd processes execute with the tcsd_t SELinux type. You can check
13 if you have these processes running by executing the ps command with
14 the -Z qualifier.
15 For example:
17 ps -eZ | grep tcsd_t
19
23 The tcsd_t SELinux type can be entered via the tcsd_exec_t file type.
24 The default entrypoint paths for the tcsd_t domain are the following:
26 /usr/sbin/tcsd
28
30 SELinux defines process types (domains) for each process running on the
31 system
32 You can see the context of a process using the -Z option to ps
34 Policy governs the access confined processes have to files. SELinux
36 tcsd policy is very flexible allowing users to setup their tcsd pro‐
37 cesses in as secure a method as possible.
38 The following process types are defined for tcsd:
40 tcsd_t
42 Note: semanage permissive -a tcsd_t can be used to make the process
44 type tcsd_t permissive. SELinux does not deny access to permissive
45 process types, but the AVC (SELinux denials) messages are still gener‐
46 ated.
47
50 SELinux policy is customizable based on least access required. tcsd
51 policy is extremely flexible and has several booleans that allow you to
52 manipulate the policy and run tcsd with the tightest access possible.
53 If you want to allow all domains to execute in fips_mode, you must turn
57 on the fips_mode boolean. Enabled by default.
58 setsebool -P fips_mode 1
60
64 SELinux defines port types to represent TCP and UDP ports.
65 You can see the types associated with a port by using the following
67 command:
68 semanage port -l
70 Policy governs the access confined processes have to these ports.
73 SELinux tcsd policy is very flexible allowing users to setup their tcsd
74 processes in as secure a method as possible.
75 The following port types are defined for tcsd:
77 tcs_port_t
80 Default Defined Ports:
84 tcp 30003
85
87 The SELinux process type tcsd_t can manage files labeled with the fol‐
88 lowing file types. The paths listed are the default paths for these
89 file types. Note the processes UID still need to have DAC permissions.
90 cluster_conf_t
92 /etc/cluster(/.*)?
94 cluster_var_lib_t
96 /var/lib/pcsd(/.*)?
98 /var/lib/cluster(/.*)?
99 /var/lib/openais(/.*)?
100 /var/lib/pengine(/.*)?
101 /var/lib/corosync(/.*)?
102 /usr/lib/heartbeat(/.*)?
103 /var/lib/heartbeat(/.*)?
104 /var/lib/pacemaker(/.*)?
105 cluster_var_run_t
107 /var/run/crm(/.*)?
109 /var/run/cman_.*
110 /var/run/rsctmp(/.*)?
111 /var/run/aisexec.*
112 /var/run/heartbeat(/.*)?
113 /var/run/pcsd-ruby.socket
114 /var/run/corosync-qnetd(/.*)?
115 /var/run/corosync-qdevice(/.*)?
116 /var/run/corosync.pid
117 /var/run/cpglockd.pid
118 /var/run/rgmanager.pid
119 /var/run/cluster/rgmanager.sk
120 krb5_host_rcache_t
122 /var/tmp/krb5_0.rcache2
124 /var/cache/krb5rcache(/.*)?
125 /var/tmp/nfs_0
126 /var/tmp/DNS_25
127 /var/tmp/host_0
128 /var/tmp/imap_0
129 /var/tmp/HTTP_23
130 /var/tmp/HTTP_48
131 /var/tmp/ldap_55
132 /var/tmp/ldap_487
133 /var/tmp/ldapmap1_0
134 root_t
136 /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
138 /
139 /initrd
140 tcsd_var_lib_t
142 /var/lib/tpm(/.*)?
144
147 SELinux requires files to have an extended attribute to define the file
148 type.
149 You can see the context of a file using the -Z option to ls
151 Policy governs the access confined processes have to these files.
153 SELinux tcsd policy is very flexible allowing users to setup their tcsd
154 processes in as secure a method as possible.
155 STANDARD FILE CONTEXT
157 SELinux defines the file context types for the tcsd, if you wanted to
159 store files with these types in a diffent paths, you need to execute
160 the semanage command to sepecify alternate labeling and then use re‐
161 storecon to put the labels on disk.
162 semanage fcontext -a -t tcsd_var_lib_t '/srv/mytcsd_content(/.*)?'
164 restorecon -R -v /srv/mytcsd_content
165 Note: SELinux often uses regular expressions to specify labels that
167 match multiple files.
168 The following file types are defined for tcsd:
170 tcsd_exec_t
174 - Set files with the tcsd_exec_t type, if you want to transition an ex‐
176 ecutable to the tcsd_t domain.
177 tcsd_initrc_exec_t
181 - Set files with the tcsd_initrc_exec_t type, if you want to transition
183 an executable to the tcsd_initrc_t domain.
184 tcsd_var_lib_t
188 - Set files with the tcsd_var_lib_t type, if you want to store the tcsd
190 files under the /var/lib directory.
191 Note: File context can be temporarily modified with the chcon command.
195 If you want to permanently change the file context you need to use the
196 semanage fcontext command. This will modify the SELinux labeling data‐
197 base. You will need to use restorecon to apply the labels.
198
201 semanage fcontext can also be used to manipulate default file context
202 mappings.
203 semanage permissive can also be used to manipulate whether or not a
205 process type is permissive.
206 semanage module can also be used to enable/disable/install/remove pol‐
208 icy modules.
209 semanage port can also be used to manipulate the port definitions
211 semanage boolean can also be used to manipulate the booleans
213 system-config-selinux is a GUI tool available to customize SELinux pol‐
216 icy settings.
217
220 This manual page was auto-generated using sepolicy manpage .
221
224 selinux(8), tcsd(8), semanage(8), restorecon(8), chcon(1), sepolicy(8),
225 setsebool(8)
226tcsd 21-06-09 tcsd_selinux(8)