Hi folks, setenforce allows users to swap selinux mode between enforcing and permissive. If I want my selinux to stay in enforcing mode forever so that nobody is able to interfere with my selinux. What should I do? Thanks. ---henry _______________________________________________ selinux mailing list -- selinux(a)lists.fedoraproject.org To unsubscribe send an email to selinux-leave(a)lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/selinux@lists.fedoraproject... Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue

Mike, setenforce can change mode. See: root@ctx0700:~# cat /etc/selinux/config # This file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux prints warnings instead of enforcing. # disabled - No SELinux policy is loaded. SELINUX=enforcing root@ctx0700:~# sestatus SELinux status: enabled SELinuxfs mount: /sys/fs/selinux SELinux root directory: /etc/selinux Loaded policy name: mcs Current mode: enforcing Mode from config file: enforcing Policy MLS status: enabled Policy deny_unknown status: allowed Memory protection checking: requested (insecure) Max kernel policy version: 31 root@ctx0700:~# setenforce 0 root@ctx0700:~# getenforce Permissive root@ctx0700:~# sestatus SELinux status: enabled SELinuxfs mount: /sys/fs/selinux SELinux root directory: /etc/selinux Loaded policy name: mcs Current mode: permissive Mode from config file: enforcing Policy MLS status: enabled Policy deny_unknown status: allowed Memory protection checking: requested (insecure) Max kernel policy version: 31 -----henry On Thu, Feb 9, 2023 at 12:11 PM Michael Radecker < michaelradecker(a)gmail.com&gt; wrote: > Henry, > > You can edit /etc/selinux/config to state SELINUX=enforcing > > When you reboot, your system will be enforcing SELinux policies and it > will persist. I'm also including a link to Red Hat documentation regarding > this topic. > > > https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/... > > -Mike > > > On Thu, Feb 9, 2023 at 11:58 AM Henry Zhang <henryzhang62(a)gmail.com&gt; > wrote: > >> Hi folks, >> >> setenforce allows users to swap selinux mode between enforcing and >> permissive. >> If I want my selinux to stay in enforcing mode forever so that nobody is >> able to interfere with my selinux. >> >> What should I do? >> >> Thanks. >> >> ---henry >> _______________________________________________ >> selinux mailing list -- selinux(a)lists.fedoraproject.org >> To unsubscribe send an email to selinux-leave(a)lists.fedoraproject.org >> Fedora Code of Conduct: >> https://docs.fedoraproject.org/en-US/project/code-of-conduct/ >> List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines >> List Archives: >> https://lists.fedoraproject.org/archives/list/selinux@lists.fedoraproject... >> Do not reply to spam, report it: >> https://pagure.io/fedora-infrastructure/new_issue >> >

Henry, With SELinux you can confine the root user and enable the secure_mode_policyload boolean. Kind Regards, On Thu, Feb 9, 2023 at 4:10 PM Michael Radecker <michaelradecker(a)gmail.com&gt; wrote: > Henry, > > The setenforce command switches SELinux temporarily. To make it persist, > change the /etc/selinux/config file and reboot. > > > -Mike > > On Thu, Feb 9, 2023, 12:40 PM Henry Zhang <henryzhang62(a)gmail.com&gt; wrote: > >> Mike, >> >> setenforce can change mode. See: >> >> root@ctx0700:~# cat /etc/selinux/config >> # This file controls the state of SELinux on the system. >> # SELINUX= can take one of these three values: >> # enforcing - SELinux security policy is enforced. >> # permissive - SELinux prints warnings instead of enforcing. >> # disabled - No SELinux policy is loaded. >> SELINUX=enforcing >> >> root@ctx0700:~# sestatus >> >> >> SELinux status: enabled >> SELinuxfs mount: /sys/fs/selinux >> SELinux root directory: /etc/selinux >> Loaded policy name: mcs >> Current mode: enforcing >> Mode from config file: enforcing >> Policy MLS status: enabled >> Policy deny_unknown status: allowed >> Memory protection checking: requested (insecure) >> Max kernel policy version: 31 >> >> root@ctx0700:~# setenforce 0 >> >> >> root@ctx0700:~# getenforce >> >> >> Permissive >> root@ctx0700:~# sestatus >> SELinux status: enabled >> SELinuxfs mount: /sys/fs/selinux >> SELinux root directory: /etc/selinux >> Loaded policy name: mcs >> Current mode: permissive >> Mode from config file: enforcing >> Policy MLS status: enabled >> Policy deny_unknown status: allowed >> Memory protection checking: requested (insecure) >> Max kernel policy version: 31 >> >> -----henry >> >> On Thu, Feb 9, 2023 at 12:11 PM Michael Radecker < >> michaelradecker(a)gmail.com&gt; wrote: >> >>> Henry, >>> >>> You can edit /etc/selinux/config to state SELINUX=enforcing >>> >>> When you reboot, your system will be enforcing SELinux policies and it >>> will persist. I'm also including a link to Red Hat documentation regarding >>> this topic. >>> >>> >>> https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/... >>> >>> -Mike >>> >>> >>> On Thu, Feb 9, 2023 at 11:58 AM Henry Zhang <henryzhang62(a)gmail.com&gt; >>> wrote: >>> >>>> Hi folks, >>>> >>>> setenforce allows users to swap selinux mode between enforcing and >>>> permissive. >>>> If I want my selinux to stay in enforcing mode forever so that nobody >>>> is able to interfere with my selinux. >>>> >>>> What should I do? >>>> >>>> Thanks. >>>> >>>> ---henry >>>> _______________________________________________ >>>> selinux mailing list -- selinux(a)lists.fedoraproject.org >>>> To unsubscribe send an email to selinux-leave(a)lists.fedoraproject.org >>>> Fedora Code of Conduct: >>>> https://docs.fedoraproject.org/en-US/project/code-of-conduct/ >>>> List Guidelines: >>>> https://fedoraproject.org/wiki/Mailing_list_guidelines >>>> List Archives: >>>> https://lists.fedoraproject.org/archives/list/selinux@lists.fedoraproject... >>>> Do not reply to spam, report it: >>>> https://pagure.io/fedora-infrastructure/new_issue >>>> >>> _______________________________________________ > selinux mailing list -- selinux(a)lists.fedoraproject.org > To unsubscribe send an email to selinux-leave(a)lists.fedoraproject.org > Fedora Code of Conduct: > https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: > https://lists.fedoraproject.org/archives/list/selinux@lists.fedoraproject... > Do not reply to spam, report it: > https://pagure.io/fedora-infrastructure/new_issue > -- Simon Sekidde

Henry, Enable the boolean as Simon suggested using setsebool. This is also a list of other related booleans: f37# semanage boolean -l | grep secure_mode secure_mode (off , off) disallow programs, such as newrole, from transitionin g to administrative user domains. secure_mode_insmod (off , off) Disable kernel module loading. secure_mode_policyload (off , off) Boolean to determine whether the system permits loadi ng policy, setting enforcing mode, and changing boolean values. Set this to true and you have to r eboot to set it back. f37# setsebool secure_mode_policyload on f37# setsebool secure_mode_policyload off Could not change active booleans: Permission denied f37# setenforce 0 setenforce: setenforce() failed With the -P switch, the change will be permanent, so remember to check you have some recovery access to the system before you do it (rescue mode, booting with selinupermissive/disabled etc.) On Thu, Feb 9, 2023 at 10:35 PM Henry Zhang <henryzhang62(a)gmail.com&gt; wrote: > Simon, > > Would you please tell me how to make it happen? > > ---henry > > On Thu, Feb 9, 2023 at 1:29 PM Simon Sekidde <ssekidde(a)redhat.com&gt; wrote: > >> Henry, >> >> With SELinux you can confine the root user and enable >> the secure_mode_policyload boolean. >> >> Kind Regards, >> >> On Thu, Feb 9, 2023 at 4:10 PM Michael Radecker < >> michaelradecker(a)gmail.com&gt; wrote: >> >>> Henry, >>> >>> The setenforce command switches SELinux temporarily. To make it >>> persist, change the /etc/selinux/config file and reboot. >>> >>> >>> -Mike >>> >>> On Thu, Feb 9, 2023, 12:40 PM Henry Zhang <henryzhang62(a)gmail.com&gt; >>> wrote: >>> >>>> Mike, >>>> >>>> setenforce can change mode. See: >>>> >>>> root@ctx0700:~# cat /etc/selinux/config >>>> # This file controls the state of SELinux on the system. >>>> # SELINUX= can take one of these three values: >>>> # enforcing - SELinux security policy is enforced. >>>> # permissive - SELinux prints warnings instead of enforcing. >>>> # disabled - No SELinux policy is loaded. >>>> SELINUX=enforcing >>>> >>>> root@ctx0700:~# sestatus >>>> >>>> >>>> SELinux status: enabled >>>> SELinuxfs mount: /sys/fs/selinux >>>> SELinux root directory: /etc/selinux >>>> Loaded policy name: mcs >>>> Current mode: enforcing >>>> Mode from config file: enforcing >>>> Policy MLS status: enabled >>>> Policy deny_unknown status: allowed >>>> Memory protection checking: requested (insecure) >>>> Max kernel policy version: 31 >>>> >>>> root@ctx0700:~# setenforce 0 >>>> >>>> >>>> root@ctx0700:~# getenforce >>>> >>>> >>>> Permissive >>>> root@ctx0700:~# sestatus >>>> SELinux status: enabled >>>> SELinuxfs mount: /sys/fs/selinux >>>> SELinux root directory: /etc/selinux >>>> Loaded policy name: mcs >>>> Current mode: permissive >>>> Mode from config file: enforcing >>>> Policy MLS status: enabled >>>> Policy deny_unknown status: allowed >>>> Memory protection checking: requested (insecure) >>>> Max kernel policy version: 31 >>>> >>>> -----henry >>>> >>>> On Thu, Feb 9, 2023 at 12:11 PM Michael Radecker < >>>> michaelradecker(a)gmail.com&gt; wrote: >>>> >>>>> Henry, >>>>> >>>>> You can edit /etc/selinux/config to state SELINUX=enforcing >>>>> >>>>> When you reboot, your system will be enforcing SELinux policies and >>>>> it will persist. I'm also including a link to Red Hat documentation >>>>> regarding this topic. >>>>> >>>>> >>>>> https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/... >>>>> >>>>> -Mike >>>>> >>>>> >>>>> On Thu, Feb 9, 2023 at 11:58 AM Henry Zhang <henryzhang62(a)gmail.com&gt; >>>>> wrote: >>>>> >>>>>> Hi folks, >>>>>> >>>>>> setenforce allows users to swap selinux mode between enforcing and >>>>>> permissive. >>>>>> If I want my selinux to stay in enforcing mode forever so that >>>>>> nobody is able to interfere with my selinux. >>>>>> >>>>>> What should I do? >>>>>> >>>>>> Thanks. >>>>>> >>>>>> ---henry >>>>>> _______________________________________________ >>>>>> selinux mailing list -- selinux(a)lists.fedoraproject.org >>>>>> To unsubscribe send an email to >>>>>> selinux-leave(a)lists.fedoraproject.org >>>>>> Fedora Code of Conduct: >>>>>> https://docs.fedoraproject.org/en-US/project/code-of-conduct/ >>>>>> List Guidelines: >>>>>> https://fedoraproject.org/wiki/Mailing_list_guidelines >>>>>> List Archives: >>>>>> https://lists.fedoraproject.org/archives/list/selinux@lists.fedoraproject... >>>>>> Do not reply to spam, report it: >>>>>> https://pagure.io/fedora-infrastructure/new_issue >>>>>> >>>>> _______________________________________________ >>> selinux mailing list -- selinux(a)lists.fedoraproject.org >>> To unsubscribe send an email to selinux-leave(a)lists.fedoraproject.org >>> Fedora Code of Conduct: >>> https://docs.fedoraproject.org/en-US/project/code-of-conduct/ >>> List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines >>> List Archives: >>> https://lists.fedoraproject.org/archives/list/selinux@lists.fedoraproject... >>> Do not reply to spam, report it: >>> https://pagure.io/fedora-infrastructure/new_issue >>> >> >> >> -- >> >> Simon Sekidde >> > _______________________________________________ > selinux mailing list -- selinux(a)lists.fedoraproject.org > To unsubscribe send an email to selinux-leave(a)lists.fedoraproject.org > Fedora Code of Conduct: > https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: > https://lists.fedoraproject.org/archives/list/selinux@lists.fedoraproject... > Do not reply to spam, report it: > https://pagure.io/fedora-infrastructure/new_issue > -- Zdenek Pytela Security SELinux team

Zdenek, I have my own machine with SELInux enabled. But SELinux info is different from yours: root@ctx0700:~# sestatus SELinux status: enabled SELinuxfs mount: /sys/fs/selinux SELinux root directory: /etc/selinux Loaded policy name: mcs Current mode: enforcing Mode from config file: enforcing Policy MLS status: enabled Policy deny_unknown status: allowed Memory protection checking: requested (insecure) Max kernel policy version: 31 root@ctx0700:~# semanage boolean -l | grep secure_mode secure_mode (off , off) Allow secure to mode secure_mode_insmod (off , off) Allow secure to mode insmod secure_mode_policyload (off , off) Allow secure to mode policyload root@ctx0700:~# setsebool secure_mode_policyload on root@ctx0700:~# setsebool secure_mode_policyload off root@ctx0700:~# setenforce 0 root@ctx0700:~# getenforce Permissive ----henry On Fri, Feb 10, 2023 at 2:42 PM Henry Zhang <henryzhang62(a)gmail.com&gt; wrote: > Zdenek, > > Thanks for the information. > Is it possible for me to convert those actions into SELinux policy so > that I do not have to do the above operation for all machines with SELinux > enabled? > > ---henry > > On Fri, Feb 10, 2023 at 1:37 AM Zdenek Pytela <zpytela(a)redhat.com&gt; wrote: > >> Henry, >> >> Enable the boolean as Simon suggested using setsebool. This is also a >> list of other related booleans: >> >> f37# semanage boolean -l | grep secure_mode >> secure_mode (off , off) disallow programs, such >> as newrole, from transitionin >> g to administrative user domains. >> secure_mode_insmod (off , off) Disable kernel module >> loading. >> secure_mode_policyload (off , off) Boolean to determine >> whether the system permits loadi >> ng policy, setting enforcing mode, and changing boolean values. Set >> this to true and you have to r >> eboot to set it back. >> f37# setsebool secure_mode_policyload on >> f37# setsebool secure_mode_policyload off >> Could not change active booleans: Permission denied >> f37# setenforce 0 >> setenforce: setenforce() failed >> >> With the -P switch, the change will be permanent, so remember to check >> you have some recovery access to the system before you do it (rescue mode, >> booting with selinupermissive/disabled etc.) >> >> >> On Thu, Feb 9, 2023 at 10:35 PM Henry Zhang <henryzhang62(a)gmail.com&gt; >> wrote: >> >>> Simon, >>> >>> Would you please tell me how to make it happen? >>> >>> ---henry >>> >>> On Thu, Feb 9, 2023 at 1:29 PM Simon Sekidde <ssekidde(a)redhat.com&gt; >>> wrote: >>> >>>> Henry, >>>> >>>> With SELinux you can confine the root user and enable >>>> the secure_mode_policyload boolean. >>>> >>>> Kind Regards, >>>> >>>> On Thu, Feb 9, 2023 at 4:10 PM Michael Radecker < >>>> michaelradecker(a)gmail.com&gt; wrote: >>>> >>>>> Henry, >>>>> >>>>> The setenforce command switches SELinux temporarily. To make it >>>>> persist, change the /etc/selinux/config file and reboot. >>>>> >>>>> >>>>> -Mike >>>>> >>>>> On Thu, Feb 9, 2023, 12:40 PM Henry Zhang <henryzhang62(a)gmail.com&gt; >>>>> wrote: >>>>> >>>>>> Mike, >>>>>> >>>>>> setenforce can change mode. See: >>>>>> >>>>>> root@ctx0700:~# cat /etc/selinux/config >>>>>> # This file controls the state of SELinux on the system. >>>>>> # SELINUX= can take one of these three values: >>>>>> # enforcing - SELinux security policy is enforced. >>>>>> # permissive - SELinux prints warnings instead of enforcing. >>>>>> # disabled - No SELinux policy is loaded. >>>>>> SELINUX=enforcing >>>>>> >>>>>> root@ctx0700:~# sestatus >>>>>> >>>>>> >>>>>> SELinux status: enabled >>>>>> SELinuxfs mount: /sys/fs/selinux >>>>>> SELinux root directory: /etc/selinux >>>>>> Loaded policy name: mcs >>>>>> Current mode: enforcing >>>>>> Mode from config file: enforcing >>>>>> Policy MLS status: enabled >>>>>> Policy deny_unknown status: allowed >>>>>> Memory protection checking: requested (insecure) >>>>>> Max kernel policy version: 31 >>>>>> >>>>>> root@ctx0700:~# setenforce 0 >>>>>> >>>>>> >>>>>> root@ctx0700:~# getenforce >>>>>> >>>>>> >>>>>> Permissive >>>>>> root@ctx0700:~# sestatus >>>>>> SELinux status: enabled >>>>>> SELinuxfs mount: /sys/fs/selinux >>>>>> SELinux root directory: /etc/selinux >>>>>> Loaded policy name: mcs >>>>>> Current mode: permissive >>>>>> Mode from config file: enforcing >>>>>> Policy MLS status: enabled >>>>>> Policy deny_unknown status: allowed >>>>>> Memory protection checking: requested (insecure) >>>>>> Max kernel policy version: 31 >>>>>> >>>>>> -----henry >>>>>> >>>>>> On Thu, Feb 9, 2023 at 12:11 PM Michael Radecker < >>>>>> michaelradecker(a)gmail.com&gt; wrote: >>>>>> >>>>>>> Henry, >>>>>>> >>>>>>> You can edit /etc/selinux/config to state SELINUX=enforcing >>>>>>> >>>>>>> When you reboot, your system will be enforcing SELinux policies and >>>>>>> it will persist. I'm also including a link to Red Hat documentation >>>>>>> regarding this topic. >>>>>>> >>>>>>> >>>>>>> https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/... >>>>>>> >>>>>>> -Mike >>>>>>> >>>>>>> >>>>>>> On Thu, Feb 9, 2023 at 11:58 AM Henry Zhang <henryzhang62(a)gmail.com&gt; >>>>>>> wrote: >>>>>>> >>>>>>>> Hi folks, >>>>>>>> >>>>>>>> setenforce allows users to swap selinux mode between enforcing and >>>>>>>> permissive. >>>>>>>> If I want my selinux to stay in enforcing mode forever so that >>>>>>>> nobody is able to interfere with my selinux. >>>>>>>> >>>>>>>> What should I do? >>>>>>>> >>>>>>>> Thanks. >>>>>>>> >>>>>>>> ---henry >>>>>>>> _______________________________________________ >>>>>>>> selinux mailing list -- selinux(a)lists.fedoraproject.org >>>>>>>> To unsubscribe send an email to >>>>>>>> selinux-leave(a)lists.fedoraproject.org >>>>>>>> Fedora Code of Conduct: >>>>>>>> https://docs.fedoraproject.org/en-US/project/code-of-conduct/ >>>>>>>> List Guidelines: >>>>>>>> https://fedoraproject.org/wiki/Mailing_list_guidelines >>>>>>>> List Archives: >>>>>>>> https://lists.fedoraproject.org/archives/list/selinux@lists.fedoraproject... >>>>>>>> Do not reply to spam, report it: >>>>>>>> https://pagure.io/fedora-infrastructure/new_issue >>>>>>>> >>>>>>> _______________________________________________ >>>>> selinux mailing list -- selinux(a)lists.fedoraproject.org >>>>> To unsubscribe send an email to selinux-leave(a)lists.fedoraproject.org >>>>> Fedora Code of Conduct: >>>>> https://docs.fedoraproject.org/en-US/project/code-of-conduct/ >>>>> List Guidelines: >>>>> https://fedoraproject.org/wiki/Mailing_list_guidelines >>>>> List Archives: >>>>> https://lists.fedoraproject.org/archives/list/selinux@lists.fedoraproject... >>>>> Do not reply to spam, report it: >>>>> https://pagure.io/fedora-infrastructure/new_issue >>>>> >>>> >>>> >>>> -- >>>> >>>> Simon Sekidde >>>> >>> _______________________________________________ >>> selinux mailing list -- selinux(a)lists.fedoraproject.org >>> To unsubscribe send an email to selinux-leave(a)lists.fedoraproject.org >>> Fedora Code of Conduct: >>> https://docs.fedoraproject.org/en-US/project/code-of-conduct/ >>> List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines >>> List Archives: >>> https://lists.fedoraproject.org/archives/list/selinux@lists.fedoraproject... >>> Do not reply to spam, report it: >>> https://pagure.io/fedora-infrastructure/new_issue >>> >> >> >> -- >> >> Zdenek Pytela >> Security SELinux team >> >

Sorry, I should use sudo su. But I still can make change in Fedora: [root@fedora lib]# setsebool secure_mode_policyload on [root@fedora lib]# setsebool secure_mode_policyload off [root@fedora lib]# setenforce 0 [root@fedora lib]# On Fri, Feb 10, 2023 at 4:17 PM Henry Zhang <henryzhang62(a)gmail.com&gt; wrote: > Zdenek, > > This is what I get from my fedora 37 (VMbox): > [henryzhang@fedora ~]$ sestatus > SELinux status: enabled > SELinuxfs mount: /sys/fs/selinux > SELinux root directory: /etc/selinux > Loaded policy name: targeted > Current mode: enforcing > Mode from config file: enforcing > Policy MLS status: enabled > Policy deny_unknown status: allowed > Memory protection checking: actual (secure) > Max kernel policy version: 33 > [henryzhang@fedora ~]$ semanage boolean -l | grep secure_mode > ValueError: SELinux policy is not managed or store cannot be accessed. > [henryzhang@fedora ~]$ semanage boolean -l | grep secure_mode > ValueError: SELinux policy is not managed or store cannot be accessed. > [henryzhang@fedora ~]$ getenforce > Enforcing > [henryzhang@fedora ~]$ setenforce 0 > setenforce: security_setenforce() failed: Permission denied > > Looks like Fedora already enforced it. > > What is wrong with my own SELinux? > > ---Henry > > On Fri, Feb 10, 2023 at 4:04 PM Henry Zhang <henryzhang62(a)gmail.com&gt; > wrote: > >> Zdenek, >> >> I have my own machine with SELInux enabled. But SELinux info is >> different from yours: >> root@ctx0700:~# sestatus >> SELinux status: enabled >> SELinuxfs mount: /sys/fs/selinux >> SELinux root directory: /etc/selinux >> Loaded policy name: mcs >> Current mode: enforcing >> Mode from config file: enforcing >> Policy MLS status: enabled >> Policy deny_unknown status: allowed >> Memory protection checking: requested (insecure) >> Max kernel policy version: 31 >> root@ctx0700:~# semanage boolean -l | grep secure_mode >> secure_mode (off , off) Allow secure to mode >> secure_mode_insmod (off , off) Allow secure to mode insmod >> secure_mode_policyload (off , off) Allow secure to mode >> policyload >> root@ctx0700:~# setsebool secure_mode_policyload on >> root@ctx0700:~# setsebool secure_mode_policyload off >> root@ctx0700:~# setenforce 0 >> root@ctx0700:~# getenforce >> Permissive >> >> >> ----henry >> >> On Fri, Feb 10, 2023 at 2:42 PM Henry Zhang <henryzhang62(a)gmail.com&gt; >> wrote: >> >>> Zdenek, >>> >>> Thanks for the information. >>> Is it possible for me to convert those actions into SELinux policy so >>> that I do not have to do the above operation for all machines with SELinux >>> enabled? >>> >>> ---henry >>> >>> On Fri, Feb 10, 2023 at 1:37 AM Zdenek Pytela <zpytela(a)redhat.com&gt; >>> wrote: >>> >>>> Henry, >>>> >>>> Enable the boolean as Simon suggested using setsebool. This is also a >>>> list of other related booleans: >>>> >>>> f37# semanage boolean -l | grep secure_mode >>>> secure_mode (off , off) disallow programs, such >>>> as newrole, from transitionin >>>> g to administrative user domains. >>>> secure_mode_insmod (off , off) Disable kernel module >>>> loading. >>>> secure_mode_policyload (off , off) Boolean to determine >>>> whether the system permits loadi >>>> ng policy, setting enforcing mode, and changing boolean values. Set >>>> this to true and you have to r >>>> eboot to set it back. >>>> f37# setsebool secure_mode_policyload on >>>> f37# setsebool secure_mode_policyload off >>>> Could not change active booleans: Permission denied >>>> f37# setenforce 0 >>>> setenforce: setenforce() failed >>>> >>>> With the -P switch, the change will be permanent, so remember to check >>>> you have some recovery access to the system before you do it (rescue mode, >>>> booting with selinupermissive/disabled etc.) >>>> >>>> >>>> On Thu, Feb 9, 2023 at 10:35 PM Henry Zhang <henryzhang62(a)gmail.com&gt; >>>> wrote: >>>> >>>>> Simon, >>>>> >>>>> Would you please tell me how to make it happen? >>>>> >>>>> ---henry >>>>> >>>>> On Thu, Feb 9, 2023 at 1:29 PM Simon Sekidde <ssekidde(a)redhat.com&gt; >>>>> wrote: >>>>> >>>>>> Henry, >>>>>> >>>>>> With SELinux you can confine the root user and enable >>>>>> the secure_mode_policyload boolean. >>>>>> >>>>>> Kind Regards, >>>>>> >>>>>> On Thu, Feb 9, 2023 at 4:10 PM Michael Radecker < >>>>>> michaelradecker(a)gmail.com&gt; wrote: >>>>>> >>>>>>> Henry, >>>>>>> >>>>>>> The setenforce command switches SELinux temporarily. To make it >>>>>>> persist, change the /etc/selinux/config file and reboot. >>>>>>> >>>>>>> >>>>>>> -Mike >>>>>>> >>>>>>> On Thu, Feb 9, 2023, 12:40 PM Henry Zhang <henryzhang62(a)gmail.com&gt; >>>>>>> wrote: >>>>>>> >>>>>>>> Mike, >>>>>>>> >>>>>>>> setenforce can change mode. See: >>>>>>>> >>>>>>>> root@ctx0700:~# cat /etc/selinux/config >>>>>>>> # This file controls the state of SELinux on the system. >>>>>>>> # SELINUX= can take one of these three values: >>>>>>>> # enforcing - SELinux security policy is enforced. >>>>>>>> # permissive - SELinux prints warnings instead of enforcing. >>>>>>>> # disabled - No SELinux policy is loaded. >>>>>>>> SELINUX=enforcing >>>>>>>> >>>>>>>> root@ctx0700:~# sestatus >>>>>>>> >>>>>>>> >>>>>>>> SELinux status: enabled >>>>>>>> SELinuxfs mount: /sys/fs/selinux >>>>>>>> SELinux root directory: /etc/selinux >>>>>>>> Loaded policy name: mcs >>>>>>>> Current mode: enforcing >>>>>>>> Mode from config file: enforcing >>>>>>>> Policy MLS status: enabled >>>>>>>> Policy deny_unknown status: allowed >>>>>>>> Memory protection checking: requested (insecure) >>>>>>>> Max kernel policy version: 31 >>>>>>>> >>>>>>>> root@ctx0700:~# setenforce 0 >>>>>>>> >>>>>>>> >>>>>>>> root@ctx0700:~# getenforce >>>>>>>> >>>>>>>> >>>>>>>> Permissive >>>>>>>> root@ctx0700:~# sestatus >>>>>>>> SELinux status: enabled >>>>>>>> SELinuxfs mount: /sys/fs/selinux >>>>>>>> SELinux root directory: /etc/selinux >>>>>>>> Loaded policy name: mcs >>>>>>>> Current mode: permissive >>>>>>>> Mode from config file: enforcing >>>>>>>> Policy MLS status: enabled >>>>>>>> Policy deny_unknown status: allowed >>>>>>>> Memory protection checking: requested (insecure) >>>>>>>> Max kernel policy version: 31 >>>>>>>> >>>>>>>> -----henry >>>>>>>> >>>>>>>> On Thu, Feb 9, 2023 at 12:11 PM Michael Radecker < >>>>>>>> michaelradecker(a)gmail.com&gt; wrote: >>>>>>>> >>>>>>>>> Henry, >>>>>>>>> >>>>>>>>> You can edit /etc/selinux/config to state SELINUX=enforcing >>>>>>>>> >>>>>>>>> When you reboot, your system will be enforcing SELinux policies >>>>>>>>> and it will persist. I'm also including a link to Red Hat documentation >>>>>>>>> regarding this topic. >>>>>>>>> >>>>>>>>> >>>>>>>>> https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/... >>>>>>>>> >>>>>>>>> -Mike >>>>>>>>> >>>>>>>>> >>>>>>>>> On Thu, Feb 9, 2023 at 11:58 AM Henry Zhang < >>>>>>>>> henryzhang62(a)gmail.com&gt; wrote: >>>>>>>>> >>>>>>>>>> Hi folks, >>>>>>>>>> >>>>>>>>>> setenforce allows users to swap selinux mode between enforcing >>>>>>>>>> and permissive. >>>>>>>>>> If I want my selinux to stay in enforcing mode forever so that >>>>>>>>>> nobody is able to interfere with my selinux. >>>>>>>>>> >>>>>>>>>> What should I do? >>>>>>>>>> >>>>>>>>>> Thanks. >>>>>>>>>> >>>>>>>>>> ---henry >>>>>>>>>> _______________________________________________ >>>>>>>>>> selinux mailing list -- selinux(a)lists.fedoraproject.org >>>>>>>>>> To unsubscribe send an email to >>>>>>>>>> selinux-leave(a)lists.fedoraproject.org >>>>>>>>>> Fedora Code of Conduct: >>>>>>>>>> https://docs.fedoraproject.org/en-US/project/code-of-conduct/ >>>>>>>>>> List Guidelines: >>>>>>>>>> https://fedoraproject.org/wiki/Mailing_list_guidelines >>>>>>>>>> List Archives: >>>>>>>>>> https://lists.fedoraproject.org/archives/list/selinux@lists.fedoraproject... >>>>>>>>>> Do not reply to spam, report it: >>>>>>>>>> https://pagure.io/fedora-infrastructure/new_issue >>>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>> selinux mailing list -- selinux(a)lists.fedoraproject.org >>>>>>> To unsubscribe send an email to >>>>>>> selinux-leave(a)lists.fedoraproject.org >>>>>>> Fedora Code of Conduct: >>>>>>> https://docs.fedoraproject.org/en-US/project/code-of-conduct/ >>>>>>> List Guidelines: >>>>>>> https://fedoraproject.org/wiki/Mailing_list_guidelines >>>>>>> List Archives: >>>>>>> https://lists.fedoraproject.org/archives/list/selinux@lists.fedoraproject... >>>>>>> Do not reply to spam, report it: >>>>>>> https://pagure.io/fedora-infrastructure/new_issue >>>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> >>>>>> Simon Sekidde >>>>>> >>>>> _______________________________________________ >>>>> selinux mailing list -- selinux(a)lists.fedoraproject.org >>>>> To unsubscribe send an email to selinux-leave(a)lists.fedoraproject.org >>>>> Fedora Code of Conduct: >>>>> https://docs.fedoraproject.org/en-US/project/code-of-conduct/ >>>>> List Guidelines: >>>>> https://fedoraproject.org/wiki/Mailing_list_guidelines >>>>> List Archives: >>>>> https://lists.fedoraproject.org/archives/list/selinux@lists.fedoraproject... >>>>> Do not reply to spam, report it: >>>>> https://pagure.io/fedora-infrastructure/new_issue >>>>> >>>> >>>> >>>> -- >>>> >>>> Zdenek Pytela >>>> Security SELinux team >>>> >>>