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= Frequently Asked Questions = | = Frequently Asked Questions = | ||
{{Admon/note | The current draft is the wiki is work in progress. Do not rely on it currently. Older versions of the FAQ is available in the references section .}} | |||
== What is SELinux? == | == What is SELinux? == | ||
SELinux is a security feature in the Linux kernel that provides fine grained access control | SELinux is a security feature in the Linux kernel that provides more fine grained access control compared to traditional file permissions. A centralized policy determines which software can access what resources. For example, network services can be confined to a particular port, Apache web service is restricted to be able to connect to only 80 by default. | ||
== Is it a firewall? == | == Is it a firewall? == | ||
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Yes. SELinux policies in Fedora were initially focused on network facing services. However several dozens of desktop software including Firefox, HAL, D-Bus etc are protected by default in current releases of Fedora. | Yes. SELinux policies in Fedora were initially focused on network facing services. However several dozens of desktop software including Firefox, HAL, D-Bus etc are protected by default in current releases of Fedora. | ||
== What is the performance impact of SELinux? == | |||
== Previous FAQs == | == Previous FAQs == | ||
Revision as of 03:22, 2 July 2008
Frequently Asked Questions
What is SELinux?
SELinux is a security feature in the Linux kernel that provides more fine grained access control compared to traditional file permissions. A centralized policy determines which software can access what resources. For example, network services can be confined to a particular port, Apache web service is restricted to be able to connect to only 80 by default.
Is it a firewall?
Though often confused with one, SELinux is not a firewall. A firewall controls the flow of traffic to and from a computer to the network. SELinux can confine access of programs within a computer and hence can be conceptually thought of a internal firewall between programs.
Is it useful on a desktop?
Yes. SELinux policies in Fedora were initially focused on network facing services. However several dozens of desktop software including Firefox, HAL, D-Bus etc are protected by default in current releases of Fedora.