SELinux

The interface is as long as it is due to the fine-grained nature of the existing SELinux reference policy.

SELinux is one of the most comprehensive security frameworks available today, but it's certainly not the only one.

At this point, you may be thinking that our goals could have been met by using strictly TE without making use of roles or SELinux users.

In the early days of SELinux, while it was still a set of patches, it provided its own security framework.

For the Smack experiment, also go into the Security options menu, deselect SELinux, and select the next option, Smack.

The next section explores the SELinux implementation and how security enforcement was transparently added to the Linux kernel.

The top row shows our SELinux users, the middle row lists the roles, and the bottom row lists domains.

This tells the pam_selinux. so module that users should be able to choose a default context upon login.

The Fedora Core 8 system (new at the time of this writing) shows how SELinux and RBAC are tightly integrated.

Then in April, Joshua dug into a tricky issue with oracle-instantclient-selinux, for which Jan publicly thanked him (2).

SELinux is configured using a modular policy language which allows an installed policy to be easily updated by users.

Note that without a userid, the id command will also display SELinux context as well as basic id information.

SELinux permits security transitions to occur only upon program execution, and it controls process' permissions (not portions of a process).

If you're using a Web hosting company for your server, SELinux may be disabled because it would probably generate too many support calls.

They picked the market-leading open source kernel (Linux) and implemented their ideas in it as "security-enhanced Linux" (SELinux).

The login process, however, uses the Linux username to choose an SELinux user for your security context.

This process is a bit complicated if your server or workstation has SELinux enabled.

Today, thousands of government employees and Linux users protect their machines using SELinux.

The agency already employs open source technologies to address multi-level security on government machines through SELinux.

SELinux begins by controlling everything while using an impressive policy language to simplify policy management.

But the SELinux checks can do many things that are hard to do with traditional UNIX-like permissions.

This article explores the ideas behind SELinux and its basic architecture.

Issuing the command setenforce 0 disables SELinux temporarily and will enable you to start the Apache Web server.

AppArmor was originally developed because SELinux was viewed as too complex for typical users to manage.

As the screen describes, SELinux provides more security options than what is available with regular Linux.

The Access Vector Cache (AVC) is a cache of previous SELinux decisions (to increase the process's performance).

The configuration examples provided here should work whether or not you have enabled SELinux.

In this article we'll do two experiments -- first we'll set up containers protected by SELinux, then containers protected by Smack.

While your Linux username and SELinux username may be made identical, they are not by themselves related.

Note: The code examples discussed here use SELinux for all the access-control needs.

And there's the rub: to use SELinux effectively, you need to have a good security policy for SELinux to enforce.

GNU ls uses a '. ' (dot) character to signify a file with only an SELinux security context.

Is computed and examining how other SE Linux security features are invoked.

Note that there are no inherent controls over SELinux user transitions.

SELinux is by far the most well-known MAC system for Linux (mandatory access control).

Is used to monitor and restore proper file contexts for SELinux.

One issue with SELinux is that it requires a file system that can support extended attributes; but AppArmor is file-system agnostic.

In this case, the hooks are defined in the loadable kernel module for SELinux.

In this example, you are not using SELinux, so you must specify the user for the method.

The semanage user command creates a new SELinux user.

This is nNOT required but highly recommended if you use SELinux.

Log in as bob, explicitly ask SELinux for a domain transition, then run register. py

The packages needed for SELinux support have been promoted to priority

NSA SELinux maximum supported policy format version value

SELinuxhas been integrated into version 2. 6 series of the Linux kernel, and separate patches are now unnecessary;

SELinux priority standard, but not enabled by default

Also, the SELinux policy specifies which role transitions are allowed. So you have

how does a security call work in se linux