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модуль_selinux [2020/06/22 14:31] val [Конфигурация] |
модуль_selinux [2024/08/23 09:32] (current) val [Конфигурация] |
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| * [[https://max-ko.ru/14-upravlenie-selinux.html|Управление SELinux]] | * [[https://max-ko.ru/14-upravlenie-selinux.html|Управление SELinux]] | ||
| - | * [[http://itstickers.besthw.net/selinux-%D0%B1%D0%BB%D0%BE%D0%BA%D0%B8%D1%80%D1%83%D0%B5%D1%82-zabbix-%D0%B0%D0%B3%D0%B5%D0%BD%D1%82/|SELinux блокирует Zabbix-агент]] | + | * [[https://habr.com/ru/companies/otus/articles/460387/|Руководство для начинающих по SELinux]] |
| + | * [[https://www.opennet.ru/base/sec/selinux_setup.txt.html|Настройка и использование SELinux (selinux limit security linux mac acl)]] | ||
| - | * [[https://docs.fedoraproject.org/ru-RU/Fedora/13/html/Security-Enhanced_Linux/index.html|Security-Enhanced Linux. Linux с улучшенной безопасностью]] | ||
| - | * [[https://www.opennet.ru/base/sec/selinux_setup.txt.html|Настройка и использование SELinux (selinux limit security linux mac acl)]] | ||
| - | * [[https://www.ibm.com/developerworks/ru/library/l-se_linux_01/index.html|Часть 1. SELinux - история появления, архитектура и принципы работы]] | ||
| - | * [[https://wiki.centos.org/TipsAndTricks/SelinuxBooleans|SELinux Booleans]] | ||
| * [[https://www.server-world.info/en/note?os=CentOS_7&p=selinux&f=11|SELinux : Use sesearch]] | * [[https://www.server-world.info/en/note?os=CentOS_7&p=selinux&f=11|SELinux : Use sesearch]] | ||
| - | * [[http://hansenroy.com/selinux-run-a-command-or-script-in-a-specific-context/|SELinux: Run a command or script in a specific context]] | + | |
| <code> | <code> | ||
| - | # sestatus | + | # sestatus -v |
| - | # yum install policycoreutils-python-utils | + | # id -Z |
| - | + | ||
| - | # man semanage | + | |
| - | </code><code> | + | |
| - | ... | + | |
| - | semanage {import,export,login,user,port,interface,module,node,fcontext,boolean,permissive,dontaudit} | + | |
| - | </code><code> | + | |
| - | # semanage fcontext -l | + | |
| </code> | </code> | ||
| + | |||
| + | ===== Установка типов (доменов) контекста безопасности для файловой системы ===== | ||
| * [[Сервис HTTP#Установка и запуск сервера Apache]] | * [[Сервис HTTP#Установка и запуск сервера Apache]] | ||
| Line 40: | Line 32: | ||
| # chcon -v -t httpd_sys_content_t /var/www/html/index.html | # chcon -v -t httpd_sys_content_t /var/www/html/index.html | ||
| - | или | + | |
| + | или более правильно | ||
| # yum install setroubleshoot | # yum install setroubleshoot | ||
| # sealert -a /var/log/audit/audit.log | # sealert -a /var/log/audit/audit.log | ||
| - | # /sbin/restorecon -v /var/www/html/index.html | + | |
| + | # yum install policycoreutils-python-utils | ||
| + | # semanage fcontext -l | grep '/var/www' | ||
| + | |||
| + | # restorecon -v /var/www/html/index.html | ||
| + | |||
| + | ### semanage fcontext -a -t httpd_sys_content_t "/mydir(/.*)?" | ||
| + | ### restorecon -R -v /mydir | ||
| </code> | </code> | ||
| - | * [[Сервис Firewall#CentOS]] firewalld | + | ===== Добавление сетевых портов к типу (домену) контекста безопасности ===== |
| + | |||
| + | * [[Сервис Firewall#CentOS]] firewalld (для демонстрации темы можно отключить) | ||
| + | |||
| + | * [[https://access.redhat.com/documentation/ru-ru/red_hat_enterprise_linux/5/html/deployment_guide/rhlcommon-section-0085|50.2.11. Running a Command in a Specific Security Context]] | ||
| + | * [[https://blog.tinned-software.net/change-ssh-port-in-centos-with-selinux/|Change SSH port in CentOS with SELinux]] | ||
| <code> | <code> | ||
| # ps axZ | grep ssh | # ps axZ | grep ssh | ||
| - | # yum install setools-console | + | |
| - | # sesearch --allow | grep sshd_t | grep port | + | # ss -tupanZ | grep ssh |
| + | |||
| + | # runcon -t sshd_t -r system_r -u system_u /usr/sbin/sshd -p 2222 -d | ||
| + | |||
| + | # semanage port -l | grep ssh | ||
| # semanage port -a -t ssh_port_t -p tcp 2222 | # semanage port -a -t ssh_port_t -p tcp 2222 | ||
| - | # yum install policycoreutils-devel | + | |
| - | # sepolicy network -a /usr/sbin/sshd | + | |
| # semanage port -d -t ssh_port_t -p tcp 22 | # semanage port -d -t ssh_port_t -p tcp 22 | ||
| </code> | </code> | ||
| - | * [[Сервис XINETD]] | + | ===== Управление разрешениями с использованием boolean ===== |
| - | * [[Средства программирования shell#Web сервер на shell]] | + | |
| + | * [[https://wiki.centos.org/TipsAndTricks/SelinuxBooleans|SELinux Booleans]] | ||
| + | * [[https://serverfault.com/questions/666045/zabbix-server-selinux-policy|Zabbix server SELinux policy]] | ||
| <code> | <code> | ||
| - | # runcon -t inetd_child_t -r system_r -u system_u cat /etc/passwd | + | # semanage boolean -l | grep zabbix |
| - | # runcon -t httpd_t -r system_r -u system_u cat /etc/passwd | + | |
| - | </code><code> | + | |
| - | # semanage boolean -l | + | |
| ... | ... | ||
| - | httpd_can_connect_ldap | + | |
| + | или | ||
| + | |||
| + | # getsebool -a | grep zabbix | ||
| ... | ... | ||
| + | |||
| + | # setsebool -P httpd_can_connect_zabbix on | ||
| </code> | </code> | ||
| + | |||
| + | ===== Аудит SELinux Policy утилитой sesearch ===== | ||
| + | |||
| + | * [[https://www.lisenet.com/2019/auditing-the-selinux-policy-with-sesearch/|Auditing the SELinux Policy with sesearch]] | ||
| + | |||
| + | <code> | ||
| + | # yum install -y setools-console | ||
| + | |||
| + | # sesearch --allow | tee se_allow.txt | ||
| + | ... | ||
| + | allow sshd_t ssh_port_t:tcp_socket name_bind; | ||
| + | ... | ||
| + | allow httpd_t zabbix_port_t:tcp_socket name_connect; [ httpd_can_connect_zabbix ]:True | ||
| + | ... | ||
| + | </code> | ||
| + | |||
| ===== Разработка модулей ===== | ===== Разработка модулей ===== | ||
модуль_selinux.1592825482.txt.gz · Last modified: 2020/06/22 14:31 by val
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