1netutils_selinux(8) SELinux Policy netutils netutils_selinux(8)
2
6 netutils_selinux - Security Enhanced Linux Policy for the netutils pro‐
7 cesses
8
10 Security-Enhanced Linux secures the netutils processes via flexible
11 mandatory access control.
12 The netutils processes execute with the netutils_t SELinux type. You
14 can check if you have these processes running by executing the ps com‐
15 mand with the -Z qualifier.
16 For example:
18 ps -eZ | grep netutils_t
20
24 The netutils_t SELinux type can be entered via the netutils_exec_t file
25 type.
26 The default entrypoint paths for the netutils_t domain are the follow‐
28 ing:
29 /sbin/arping, /usr/sbin/tcpdump
31
33 SELinux defines process types (domains) for each process running on the
34 system
35 You can see the context of a process using the -Z option to ps
37 Policy governs the access confined processes have to files. SELinux
39 netutils policy is very flexible allowing users to setup their netutils
40 processes in as secure a method as possible.
41 The following process types are defined for netutils:
43 netutils_t
45 Note: semanage permissive -a netutils_t can be used to make the process
47 type netutils_t permissive. SELinux does not deny access to permissive
48 process types, but the AVC (SELinux denials) messages are still gener‐
49 ated.
50
53 SELinux policy is customizable based on least access required. netu‐
54 tils policy is extremely flexible and has several booleans that allow
55 you to manipulate the policy and run netutils with the tightest access
56 possible.
57 If you want to allow all daemons the ability to read/write terminals,
61 you must turn on the allow_daemons_use_tty boolean. Disabled by
62 default.
63 setsebool -P allow_daemons_use_tty 1
65 If you want to allow all domains to use other domains file descriptors,
69 you must turn on the allow_domain_fd_use boolean. Enabled by default.
70 setsebool -P allow_domain_fd_use 1
72 If you want to allow confined applications to run with kerberos, you
76 must turn on the allow_kerberos boolean. Enabled by default.
77 setsebool -P allow_kerberos 1
79 If you want to allow sysadm to debug or ptrace all processes, you must
83 turn on the allow_ptrace boolean. Disabled by default.
84 setsebool -P allow_ptrace 1
86 If you want to allow system to run with NIS, you must turn on the
90 allow_ypbind boolean. Disabled by default.
91 setsebool -P allow_ypbind 1
93 If you want to allow all domains to have the kernel load modules, you
97 must turn on the domain_kernel_load_modules boolean. Disabled by
98 default.
99 setsebool -P domain_kernel_load_modules 1
101 If you want to allow all domains to execute in fips_mode, you must turn
105 on the fips_mode boolean. Enabled by default.
106 setsebool -P fips_mode 1
108 If you want to enable reading of urandom for all domains, you must turn
112 on the global_ssp boolean. Disabled by default.
113 setsebool -P global_ssp 1
115 If you want to allow confined applications to use nscd shared memory,
119 you must turn on the nscd_use_shm boolean. Enabled by default.
120 setsebool -P nscd_use_shm 1
122
126 The SELinux process type netutils_t can manage files labeled with the
127 following file types. The paths listed are the default paths for these
128 file types. Note the processes UID still need to have DAC permissions.
129 initrc_tmp_t
131 mnt_t
134 /mnt(/[^/]*)
136 /mnt(/[^/]*)?
137 /rhev(/[^/]*)?
138 /media(/[^/]*)
139 /media(/[^/]*)?
140 /etc/rhgb(/.*)?
141 /media/.hal-.*
142 /net
143 /afs
144 /rhev
145 /misc
146 netutils_tmp_t
148 tmp_t
151 /tmp
153 /usr/tmp
154 /var/tmp
155 /tmp-inst
156 /var/tmp-inst
157 /var/tmp/vi.recover
158
161 SELinux requires files to have an extended attribute to define the file
162 type.
163 You can see the context of a file using the -Z option to ls
165 Policy governs the access confined processes have to these files.
167 SELinux netutils policy is very flexible allowing users to setup their
168 netutils processes in as secure a method as possible.
169 STANDARD FILE CONTEXT
171 SELinux defines the file context types for the netutils, if you wanted
173 to store files with these types in a diffent paths, you need to execute
174 the semanage command to sepecify alternate labeling and then use
175 restorecon to put the labels on disk.
176 semanage fcontext -a -t netutils_tmp_t '/srv/mynetutils_content(/.*)?'
178 restorecon -R -v /srv/mynetutils_content
179 Note: SELinux often uses regular expressions to specify labels that
181 match multiple files.
182 The following file types are defined for netutils:
184 netutils_exec_t
188 - Set files with the netutils_exec_t type, if you want to transition an
190 executable to the netutils_t domain.
191 Paths:
194 /sbin/arping, /usr/sbin/tcpdump
195 netutils_tmp_t
198 - Set files with the netutils_tmp_t type, if you want to store netutils
200 temporary files in the /tmp directories.
201 Note: File context can be temporarily modified with the chcon command.
205 If you want to permanently change the file context you need to use the
206 semanage fcontext command. This will modify the SELinux labeling data‐
207 base. You will need to use restorecon to apply the labels.
208
211 semanage fcontext can also be used to manipulate default file context
212 mappings.
213 semanage permissive can also be used to manipulate whether or not a
215 process type is permissive.
216 semanage module can also be used to enable/disable/install/remove pol‐
218 icy modules.
219 semanage boolean can also be used to manipulate the booleans
221 system-config-selinux is a GUI tool available to customize SELinux pol‐
224 icy settings.
225
228 This manual page was auto-generated using sepolicy manpage .
229
232 selinux(8), netutils(8), semanage(8), restorecon(8), chcon(1) , setse‐
233 bool(8)
234netutils 15-06-03 netutils_selinux(8)