contents such as:Selinux=enforcing#此项定义selinux状态.#enforcing-is a mandatory mode system protected by SELinux. Is that you're violating the strategy, and you can't go on.#permissive-is the hint mode system is not protected by SELinux, just receive a warning message. Permissive
matrix. It then allows or denies access based on the results of the query, and the reject message details are located in/var/log/messages.II: SELinux ApplicationThree states of the 1:selinuxDisable #关闭, i.e. without a security contextEnforcing #强制开启Peimissing #警告模式2: Change SELinux status(1) configuration file See direct change[[email protected] ~]# Vim/etc/selinux
files that contain various running rules
2.3 SELinux has two modes of operation
"Permissive": all operations are allowed (that is, no Mac), but log is logged if there is a violation of permissions"Enforcing": all operations will be checked for permissions
iii. te te:type Enforcement) policy, basic definition
The configuration above is configured with the. te file, which is our basic syntax.
3.1 Definition
, or a user. General roles include object_r, which indicates archive resources such as archives or directories. This should be the most common role. system_r: Indicates programs! However, general users will also be designated as system_r!Type: In the predefined targeted policy,Identify and Role fields are basically not important.! What is important is the type field! Basically, whether a main program can read this file resource is related to the type field! The type fields are not the same in th
effect.8.SELinux Features
①.permissive (license) mode SELinux can run in Permissive mode, in which only access checks are present but no disallowed access is denied. The simplest way to check the current working mode of SELinux is to run the Getenforce command. To s
they belong). The SELinux domain and the SELinux security context are SELinux's double insurance, which makes the service program unable to operate over-privileged.The SELinux service has three modes of operation, as follows:
Enforcing: Enforces the security policy mode, which will intercept illegal requests from the service.
recommend that you first submit an error report with the help of the SELinux debugging tool, and then handle it based on the situation. If the report has already been reported, the solution is usually detailed in the comments of the error report. If you want to ignore the SELinux warning and still run the application, you can set SELinux to the allowed mode, whi
( file ) ,· SELinux There are many early warning policies that do not usually require a custom policy ( Exclude the need to protect custom services, Processes ) ,· Centos/rhel use the preset target (target) strategy,• The target policy defines that only the target process is throttled by SELinux and other processes are running in unrestricted mode, and the target policy only affects the network application
SELinux operates in the "enforcing" mode by default.
$ Sestatus-Vselinux status: enabledselinuxfsMount:/Selinuxcurrent mode: enforcingmode from configFile: Enforcingpolicy version:24Policy from configFile: Targeted
In "enforcing" mode, Zend server CE may run incorrectly. During installation, you must switch to "Permissive" mode.
# Setenforce permissive
1. What when SELinuxSELinux, kernel-level enhanced firewallBasic SELINUX Security ConceptsSELINUX (Security enhanced Linux) protects your systemThe extra mechanism of the whole sexIn a way, it can be seen as parallel to the standard permission systemSystem of permissions. In normal mode, the process runs as a user,and the files and other resources on the system are set permissions (controlWhich users have access to which files SELINUXAnother differenc
The method for checking the selinux status is as follows: kernel (document ID432988.1) selinux has three modes: Enforcing (orknownasenabled), DisabledorPermissive. PermissivemodeloadstheSELinuxsoftware, butdoesntenf
Method for checking selinux status: Source: How to Check whether SELinux is Enabled or Disabled (Documen
root 458 Jul 02:18/etc/selinux/config[10:59 [email protected]/var/ftp/pub]# ll/etc/sysconfig/selinux LRWXRWXRW X. 1 root root 02:18/etc/sysconfig/selinux. /selinux/configThe configuration file defines:1) Turn SELinux on or off2) Set which policy the system executes3) Set ho
you want to ignore the SELinux warning and still run the application, you can set SELinux to the allowed mode, which only records warnings but does not stop running: setenforce 0. Set a single annotation process to the allowed mode instead of the entire system. For example, you only want to run Apache in the allowed mode: semange permissive-a httpd_t follow the
OKServer:nginxDate:Mon, Dec 10:52:34 Gmtcontent-type:text/htmlcontent-len Gth:12last-modified:mon, Dec 10:00:36 gmtconnection:keep-aliveaccept-ranges:bytesThe folder permission suffix is found to have a point when checking the folder. Note the difference between the 50x.html, Default.html, index.html, and the welcome.html file permissions under the HTML folder, after the three file permissions.Second, the problem analysisGoogle, Degree Niang, finally concluded that the
following describes SELinux-related tools.
/Usr/bin/setenforce modify the real-time running mode of SELinux
Setenforce 1 sets SELinux to enforcing Mode
Setenforce 0 sets SELinux to permissive Mode
To completely disable SELinux, s
The topic of this article is SELinux configuration on RHEL 5. RHEL also provides two methods to configure SELinux: graphical user interface (GUI) and command line. To demonstrate the ease of use of SELinux, This article uses the rhel gui to enable SELinux.
To enable SELinux
chroot_list. Also prone to omissions. So it is recommended to use Chroot_local_user to limit.
2. Below, the problem comes out. When SELinux is turned on, SELinux prevents the FTP daemon from reading the user's home directory. So FTP will throw out a sentence of "Oops:cannot change directory." Unable to enter directory, error exiting.
There are two solutions:
1. Reduce the
Some time ago, the Samba server was installed on the 4*4-core server in the lab. After solving the hardware problems installed on the server, Samba was configured on the server, but when the client accessed samba, display error. The red exclamation point is displayed in the upper-right corner of the host machine. Click here to see The SELinux alarm. The alarm time is the same as the samba access time of each client. It is estimated that
SELinux is short for security-enhanced Linux. The traditional Linux permission controls the owner, group, and other rwx of files and directories, while SELinux uses the delegated access control, that is to say, to control the access of a process to the files and directories on a specific file system, SELinux sets many rules to determine which processes can access
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