amavis_selinux(8) - Linux man page

Name

amavis_selinux - Security Enhanced Linux Policy for the amavis processes

Description

Security-Enhanced Linux secures the amavis processes via flexible mandatory access control.

The amavis processes execute with the amavis_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier.

For example:

ps -eZ | grep amavis_t

Entrypoints

The amavis_t SELinux type can be entered via the "amavis_exec_t" file type. The default entrypoint paths for the amavis_t domain are the following:"

/usr/lib(64)?/AntiVir/antivir, /usr/sbin/amavisd.*

Process Types

SELinux defines process types (domains) for each process running on the system

You can see the context of a process using the -Z option to ps

Policy governs the access confined processes have to files. SELinux amavis policy is very flexible allowing users to setup their amavis processes in as secure a method as possible.

The following process types are defined for amavis:

amavis_t

Note: semanage permissive -a amavis_t

can be used to make the process type amavis_t permissive. Permissive process types are not denied access by SELinux. AVC messages will still be generated.

Booleans

SELinux policy is customizable based on least access required. amavis policy is extremely flexible and has several booleans that allow you to manipulate the policy and run amavis with the tightest access possible.

If you want to allow amavis to use JIT compiler, you must turn on the amavis_use_jit boolean.

setsebool -P amavis_use_jit 1

If you want to allow amavis to use JIT compiler, you must turn on the amavis_use_jit boolean.

setsebool -P amavis_use_jit 1

File Contexts

SELinux requires files to have an extended attribute to define the file type.

You can see the context of a file using the -Z option to ls

Policy governs the access confined processes have to these files. SELinux amavis policy is very flexible allowing users to setup their amavis processes in as secure a method as possible.

The following file types are defined for amavis:

amavis_etc_t

- Set files with the amavis_etc_t type, if you want to store amavis files in the /etc directories.

amavis_exec_t

- Set files with the amavis_exec_t type, if you want to transition an executable to the amavis_t domain.

amavis_initrc_exec_t

- Set files with the amavis_initrc_exec_t type, if you want to transition an executable to the amavis_initrc_t domain.

amavis_quarantine_t

- Set files with the amavis_quarantine_t type, if you want to treat the files as amavis quarantine data.

amavis_spool_t

- Set files with the amavis_spool_t type, if you want to store the amavis files under the /var/spool directory.

amavis_tmp_t

- Set files with the amavis_tmp_t type, if you want to store amavis temporary files in the /tmp directories.

amavis_var_lib_t

- Set files with the amavis_var_lib_t type, if you want to store the amavis files under the /var/lib directory.

amavis_var_log_t

- Set files with the amavis_var_log_t type, if you want to treat the data as amavis var log data, usually stored under the /var/log directory.

amavis_var_run_t

- Set files with the amavis_var_run_t type, if you want to store the amavis files under the /run directory.

Note: File context can be temporarily modified with the chcon command. If you want to permanently change the file context you need to use the semanage fcontext command. This will modify the SELinux labeling database. You will need to use restorecon to apply the labels.

Port Types

SELinux defines port types to represent TCP and UDP ports.

You can see the types associated with a port by using the following command:

semanage port -l

Policy governs the access confined processes have to these ports. SELinux amavis policy is very flexible allowing users to setup their amavis processes in as secure a method as possible.

The following port types are defined for amavis:

amavisd_recv_port_t
Default Defined Ports:: tcp 10024
amavisd_send_port_t
Default Defined Ports:: tcp 10025

Managed Files

The SELinux process type amavis_t can manage files labeled with the following file types. The paths listed are the default paths for these file types. Note the processes UID still need to have DAC permissions.

amavis_quarantine_t

/var/virusmails(/.*)?

amavis_spool_t

/var/spool/amavisd(/.*)?

amavis_tmp_t
amavis_var_lib_t

/var/amavis(/.*)?

/var/lib/amavis(/.*)?

amavis_var_log_t

/var/log/amavisd.log.*

amavis_var_run_t

/var/run/amavis(d)?(/.*)?

antivirus_db_t

/var/opt/f-secure(/.*)?

initrc_tmp_t
mnt_t

/mnt(/[^/]*)

/mnt(/[^/]*)?

/rhev(/[^/]*)?

/media(/[^/]*)

/media(/[^/]*)?

/etc/rhgb(/.*)?

/media/.hal-.*

/net

/afs

/misc

/rhev

root_t

/initrd

snmpd_var_lib_t

/var/agentx(/.*)?

/var/net-snmp(/.*)

/var/lib/snmp(/.*)?

/var/lib/net-snmp(/.*)?

/usr/share/snmp/mibs/.index

tmp_t

/tmp

/usr/tmp

/var/tmp

/var/tmp/vi.recover

Commands

semanage fcontext can also be used to manipulate default file context mappings.

semanage permissive can also be used to manipulate whether or not a process type is permissive.

semanage module can also be used to enable/disable/install/remove policy modules.

semanage port can also be used to manipulate the port definitions

semanage boolean can also be used to manipulate the booleans

system-config-selinux is a GUI tool available to customize SELinux policy settings.

Author

This manual page was auto-generated using sepolicy manpage by mgrepl.