“UbuntuHelp:AppArmor”的版本间的差异
来自Ubuntu中文
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=== Disable one profile === | === Disable one profile === | ||
<pre><nowiki> | <pre><nowiki> | ||
− | ln -s /etc/apparmor.d/profile.name /etc/apparmor.d/disable/ | + | ln -s /etc/apparmor.d/profile.name /etc/apparmor.d/disable/ |
− | apparmor_parser -R /etc/apparmor.d/profile.name | + | apparmor_parser -R /etc/apparmor.d/profile.name |
</nowiki></pre> | </nowiki></pre> | ||
Example: | Example: | ||
<pre><nowiki> | <pre><nowiki> | ||
− | ln -s /etc/apparmor.d/bin.ping /etc/apparmor.d/disable/ | + | ln -s /etc/apparmor.d/bin.ping /etc/apparmor.d/disable/ |
− | apparmor_parser -R /etc/apparmor.d/bin.ping | + | apparmor_parser -R /etc/apparmor.d/bin.ping |
</nowiki></pre> | </nowiki></pre> | ||
=== Enable one profile === | === Enable one profile === | ||
By default, profiles are enabled (ie loaded into the kernel and applied to processes). | By default, profiles are enabled (ie loaded into the kernel and applied to processes). | ||
<pre><nowiki> | <pre><nowiki> | ||
− | rm /etc/apparmor.d/disable/profile.name | + | rm /etc/apparmor.d/disable/profile.name |
− | cat /etc/apparmor.d/profile.name | sudo apparmor_parser -a | + | cat /etc/apparmor.d/profile.name | sudo apparmor_parser -a |
</nowiki></pre> | </nowiki></pre> | ||
Example: | Example: | ||
<pre><nowiki> | <pre><nowiki> | ||
− | rm /etc/apparmor.d/disable/bin.ping | + | rm /etc/apparmor.d/disable/bin.ping |
− | cat /etc/apparmor.d/bin.ping | sudo apparmor_parser -a | + | cat /etc/apparmor.d/bin.ping | sudo apparmor_parser -a |
</nowiki></pre> | </nowiki></pre> | ||
== Profile customization == | == Profile customization == | ||
− | Profiles can found in < | + | Profiles can found in <pre><nowiki>/etc/apparmor.d</nowiki></pre>. |
− | Some customization can be made in < | + | Some customization can be made in <pre><nowiki>/etc/apparmor.d/tunables/</nowiki></pre> |
=== Set home directories location === | === Set home directories location === | ||
− | The location of home directories can be tuned in < | + | The location of home directories can be tuned in <pre><nowiki>/etc/apparmor.d/tunables/home</nowiki></pre>. |
== FAQ == | == FAQ == | ||
=== apparmor_status reports processes that are unconfined but have a profile defined === | === apparmor_status reports processes that are unconfined but have a profile defined === | ||
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sudo aa-genprof slapd | sudo aa-genprof slapd | ||
</nowiki></pre> | </nowiki></pre> | ||
− | The man page has more information: < | + | The man page has more information: <pre><nowiki>man aa-genprof</nowiki></pre>. |
=== Include your new profile in apparmor-profiles package === | === Include your new profile in apparmor-profiles package === | ||
To get your new profile included in the apparmor-profiles package, file a bug in Launchpad against the [https://bugs.launchpad.net/ubuntu/+source/apparmor/+filebug [[UbuntuHelp:AppArmor|AppArmor]] package]: | To get your new profile included in the apparmor-profiles package, file a bug in Launchpad against the [https://bugs.launchpad.net/ubuntu/+source/apparmor/+filebug [[UbuntuHelp:AppArmor|AppArmor]] package]: | ||
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sudo aa-logprof | sudo aa-logprof | ||
</nowiki></pre> | </nowiki></pre> | ||
− | The man page has more information : < | + | The man page has more information : <pre><nowiki>man aa-logprof</nowiki></pre> |
== Resources == | == Resources == | ||
* [http://en.opensuse.org/AppArmor_Geeks Intro to AppArmor for Geeks] : detailed usage of apparmor. | * [http://en.opensuse.org/AppArmor_Geeks Intro to AppArmor for Geeks] : detailed usage of apparmor. |
2007年12月6日 (四) 10:04的版本
点击翻译: |
English |
请不要直接编辑翻译本页,本页将定期与来源同步。 |
目录
- 1 Introduction
- 2 Installation
- 3 Usage
- 3.1 List the current status of apparmor
- 3.2 Put a profile in complain mode
- 3.3 Put all profiles into complain mode
- 3.4 Put a profile in enforce mode
- 3.5 Put all profiles in enforce mode
- 3.6 Disable AppArmor framework
- 3.7 Enable AppArmor framework
- 3.8 Reload all profiles
- 3.9 Reload one profile
- 3.10 Disable one profile
- 3.11 Enable one profile
- 4 Profile customization
- 5 FAQ
- 6 Creating a new profile
- 7 Update profiles
- 8 Resources
Introduction
AppArmor is a Linux Security Module implementation of name-based access controls. AppArmor confines individual programs to a set of listed files and posix 1003.1e draft capabilities. AppArmor was first made available to Ubuntu in Ubuntu 7.04 in Universe.
Installation
Ubuntu 7.10 (Gutsy)
AppArmor is installed and loaded by default in Gutsy. Some packages will install their own profiles. Additional profiles can found in the package apparmor-profiles from the Universe repository.
Install additional AppArmor profiles
- Enable the Universe repository.
- Install apparmor-profiles. See InstallingSoftware.
Ubuntu 7.04 (Feisty)
AppArmor is not included by default in the Feisty kernel. It needs to be compiled manually.
- Enable the Universe repository.
- Install apparmor-modules-source and module-assistant packages. See InstallingSoftware.
- Compile the apparmor kernel module :
sudo m-a -v -t prepare sudo m-a -v -t -f build apparmor-modules sudo m-a -v -t install apparmor-modules
- Install apparmor-profiles, apparmor-utils and apparmor packages. See InstallingSoftware.
Installing the latest version
To install the latest apparmor packages on feisty, the packages have to be rebuilt. See latest apparmor utilities for feisty (LP #116627).
Kernel upgrade / apparmor-module-source upgrade
When a new kernel is installed or when a new version of apparmor-module-source is installed, the apparmor module has to be recompiled :
sudo m-a -v -t -f build apparmor-modules sudo m-a -v -t install apparmor-modules
In order to make sure that all running processes are protected, the system has then to be rebooted.
Usage
All the commands should be executed from a terminal.
List the current status of apparmor
sudo apparmor_status
Put a profile in complain mode
sudo aa-complain /path/to/bin
Example:
sudo aa-complain /bin/ping
Put all profiles into complain mode
sudo aa-complain /etc/apparmor.d/*
Put a profile in enforce mode
sudo aa-enforce /path/to/bin
Example:
sudo aa-enforce /bin/ping
Put all profiles in enforce mode
sudo aa-enforce /etc/apparmor.d/*
Disable AppArmor framework
sudo /etc/init.d/apparmor kill sudo update-rc.d -f apparmor remove
Enable AppArmor framework
sudo /etc/init.d/apparmor start sudo update-rc.d apparmor start 37 S .
Reload all profiles
sudo /etc/init.d/apparmor reload
Reload one profile
cat /etc/apparmor.d/profile.name | sudo apparmor_parser -r
Example:
cat /etc/apparmor.d/bin.ping | sudo apparmor_parser -r
Disable one profile
ln -s /etc/apparmor.d/profile.name /etc/apparmor.d/disable/ apparmor_parser -R /etc/apparmor.d/profile.name
Example:
ln -s /etc/apparmor.d/bin.ping /etc/apparmor.d/disable/ apparmor_parser -R /etc/apparmor.d/bin.ping
Enable one profile
By default, profiles are enabled (ie loaded into the kernel and applied to processes).
rm /etc/apparmor.d/disable/profile.name cat /etc/apparmor.d/profile.name | sudo apparmor_parser -a
Example:
rm /etc/apparmor.d/disable/bin.ping cat /etc/apparmor.d/bin.ping | sudo apparmor_parser -a
Profile customization
Profiles can found in/etc/apparmor.d. Some customization can be made in
/etc/apparmor.d/tunables/
Set home directories location
The location of home directories can be tuned in/etc/apparmor.d/tunables/home.
FAQ
apparmor_status reports processes that are unconfined but have a profile defined
Restart the listed processes. Rebooting will also fix the problem. AppArmor can only track and protect processes that are started after the kernel module has been loaded. After the apparmor packages have been installed, apparmor will be started. But running processes won't be protected by AppArmor. Either restarting the processes or rebooting will fix this. You can also apply a profile to an already running process by issuing the following command:
sudo sh -c "echo 'setprofile /path/to/bin' > /proc/pid/attr/current"
Creating a new profile
Design a test plan
Try to think about how the application should be exercised. The test plan should be divided into small test cases. Each test case should have a small description and list the steps to follow. Some standard test cases are :
- starting the program
- stopping the program
- reloading the program
- testing all the command supported by the init script
Generate the new profile
Use aa-genprof to generate a new profile. From a terminal, use the command aa-genprof:
sudo aa-genprof executable
Example:
sudo aa-genprof slapdThe man page has more information:
man aa-genprof.
Include your new profile in apparmor-profiles package
To get your new profile included in the apparmor-profiles package, file a bug in Launchpad against the AppArmor package:
- Include your test plan and testcases.
- Attach your new profile to the bug.
Update profiles
When the program is misbehaving, audit messages are sent to the log files. The program aa-logprof can be used to scan log files for AppArmor audit messages, review them and update the profiles.
sudo aa-logprofThe man page has more information :
man aa-logprof
Resources
- Intro to AppArmor for Geeks : detailed usage of apparmor.
- AppArmor now in Feisty : small tutorial about generating a new profile for evince.