1ssh_keysign_selinux(8) SELinux Policy ssh_keysign ssh_keysign_selinux(8)
2
3
4
6 ssh_keysign_selinux - Security Enhanced Linux Policy for the
7 ssh_keysign processes
8
10 Security-Enhanced Linux secures the ssh_keysign processes via flexible
11 mandatory access control.
12
13 The ssh_keysign processes execute with the ssh_keysign_t SELinux type.
14 You can check if you have these processes running by executing the ps
15 command with the -Z qualifier.
16
17 For example:
18
19 ps -eZ | grep ssh_keysign_t
20
21
22
24 The ssh_keysign_t SELinux type can be entered via the
25 ssh_keysign_exec_t file type.
26
27 The default entrypoint paths for the ssh_keysign_t domain are the fol‐
28 lowing:
29
30 /usr/lib/openssh/ssh-keysign, /usr/libexec/openssh/ssh-keysign
31
33 SELinux defines process types (domains) for each process running on the
34 system
35
36 You can see the context of a process using the -Z option to ps
37
38 Policy governs the access confined processes have to files. SELinux
39 ssh_keysign policy is very flexible allowing users to setup their
40 ssh_keysign processes in as secure a method as possible.
41
42 The following process types are defined for ssh_keysign:
43
44 ssh_keysign_t
45
46 Note: semanage permissive -a ssh_keysign_t can be used to make the
47 process type ssh_keysign_t permissive. SELinux does not deny access to
48 permissive process types, but the AVC (SELinux denials) messages are
49 still generated.
50
51
53 SELinux policy is customizable based on least access required.
54 ssh_keysign policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run ssh_keysign with the tight‐
56 est access possible.
57
58
59
60 If you want to allow host key based authentication, you must turn on
61 the ssh_keysign boolean. Disabled by default.
62
63 setsebool -P ssh_keysign 1
64
65
66
67 If you want to allow all domains to execute in fips_mode, you must turn
68 on the fips_mode boolean. Enabled by default.
69
70 setsebool -P fips_mode 1
71
72
73
74 If you want to allow confined applications to use nscd shared memory,
75 you must turn on the nscd_use_shm boolean. Enabled by default.
76
77 setsebool -P nscd_use_shm 1
78
79
80
82 SELinux requires files to have an extended attribute to define the file
83 type.
84
85 You can see the context of a file using the -Z option to ls
86
87 Policy governs the access confined processes have to these files.
88 SELinux ssh_keysign policy is very flexible allowing users to setup
89 their ssh_keysign processes in as secure a method as possible.
90
91 STANDARD FILE CONTEXT
92
93 SELinux defines the file context types for the ssh_keysign, if you
94 wanted to store files with these types in a different paths, you need
95 to execute the semanage command to specify alternate labeling and then
96 use restorecon to put the labels on disk.
97
98 semanage fcontext -a -t ssh_keysign_exec_t '/srv/ssh_keysign/con‐
99 tent(/.*)?'
100 restorecon -R -v /srv/myssh_keysign_content
101
102 Note: SELinux often uses regular expressions to specify labels that
103 match multiple files.
104
105 The following file types are defined for ssh_keysign:
106
107
108
109 ssh_keysign_exec_t
110
111 - Set files with the ssh_keysign_exec_t type, if you want to transition
112 an executable to the ssh_keysign_t domain.
113
114
115 Paths:
116 /usr/lib/openssh/ssh-keysign, /usr/libexec/openssh/ssh-keysign
117
118
119 Note: File context can be temporarily modified with the chcon command.
120 If you want to permanently change the file context you need to use the
121 semanage fcontext command. This will modify the SELinux labeling data‐
122 base. You will need to use restorecon to apply the labels.
123
124
126 semanage fcontext can also be used to manipulate default file context
127 mappings.
128
129 semanage permissive can also be used to manipulate whether or not a
130 process type is permissive.
131
132 semanage module can also be used to enable/disable/install/remove pol‐
133 icy modules.
134
135 semanage boolean can also be used to manipulate the booleans
136
137
138 system-config-selinux is a GUI tool available to customize SELinux pol‐
139 icy settings.
140
141
143 This manual page was auto-generated using sepolicy manpage .
144
145
147 selinux(8), ssh_keysign(8), semanage(8), restorecon(8), chcon(1), se‐
148 policy(8), setsebool(8)
149
150
151
152ssh_keysign 23-10-20 ssh_keysign_selinux(8)