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aum is the atomic update manager. It is used by many Atomicorp products to update components.


For users with an ASL license, aum can update the following:

  1. ASL, including aum
  2. Secure Kernel
  3. Host Based Intrusion Detection System (HIDS)
  4. Web Application Firewall (WAF)
  5. Transparent Web Application Firewall (T-WAF)
  6. modsecurityWeb Application Firewall
  7. Upload Protection
  8. RBLs
  9. Firewall components
  10. Log Intrusion Detection System (LIDS)
  11. Active Response System
  12. RBLs
  13. GeoIP databases
  14. Web console
  15. Realtime malware protection system
  16. Malware upload protection system
  17. clamav signatures
  18. Support packages used by ASL

Note: This is controlled by the following options:

Rules Only

For users with just a rules license aum can update the following:

  1. aum
  2. modsecurity rules
  3. modsecurity

Note: This is controlled by the users configuration of aum.

Supported Platforms

  • redhat 5/6
  • centos 5/6
  • cloudlinux 5/6
  • debian 6/7/8
  • ubuntu 10/12/14
  • opensuse 12/13



aum is included in ASL. There is no need to install it, its already on your system!

Note: Do not manually install aum if you have ASL installed.

Rules Only licenses

Please see the link below:


Please see this page:

aum configuration

Cpanel specific notes


If apache is not configured to load this file, one easy way to include this is to create a symlink from the /etc/httpd/conf.d directory with the command below:

ln -s /usr/local/apache/conf/modsec2.user.conf /etc/httpd/conf.d/99999_modsec2.user.conf

The /etc/httpd/conf.d directory is the Linux standard directory for apache configuration files. Adding a configuration file to this directory will normally tell apache to load the configuration file. aum will setup cpanel apache systems to use this standard method to support standard apache configuration files.

Note: This configuration is not enabled by default to prevent configuration loops. Some cpanel systems may be misconfigured to load their rules twice. If you have trouble starting apache after symlinking this file, remove the symlink and check your apache configuration for duplicate entires.

Frequently Asked Questions


aum is fully integrated into ASL and can be managed fully from the ASL web console. Please see the ASL_Configuration page for configuration options for ASL.

Rules only users

Does aum install more rules than asl-lite?

Yes, aum supports the full range of current rules available to rules only users. asl-lite did not.

Will aum keep mod_security up to date?

Yes. When an update is required by the rules, it will upgrade mod_security. When an update is not required by the rules, it will not upgrade mod_security.

Note: For rules only customers, you may see that aum has a slightly older version of mod_security installed than with ASL. This is expected, as rules only systems do not have access to the full feature set in ASL, and occasionally we release updates to mod_security that not rule related but contains features ASL uses.

How can I enable/disable rules if I dont have ASL?

aum can disable rule classs, it can not disable/enable specific rules. You need ASL for that level of granularity.

How can I enable/disable rule classes if I dont have ASL?

Rule classes are enabled/disabled in the /etc/asl/config file. Setting a rule class to "yes" enables it, and "no" disables it.

Does aum use the /etc/asl/config file settings


Do rule sets still need to be manually disabled?

No, check enable/disable the class in /etc/asl/config

Can I configure what aum updates?

Yes. The following options in /etc/asl/config are available for rules only aum users:


Configures the update frequency for aum to download and install updates, such as new rules and signatures

NOTE: Updates can be run manually from the command line with aum -u.

If a software update is available you should follow your normal patch management procedure. We recommend that all users test upgrades on a test system before deploying to a production system. See "UPDATE_TYPE" below.


Configures the behavior of the AUTOMATIC_UPDATE event. There are three options:

All: This will upgrade all compotents aum can update. Please see above for a list of components for ASL and rules only users.

Exclude-kernel: This will upgrade all ASL software, rule and signatures updates but not upgrade the kernel. (Note: This has no effect for rules only users of aum)

rules-only: This will exclude all software updates except for rules. Note: If a rule update requires an update to a component, for example modsecurity, the component will not be installed and that rule update will also not be installed.

Important Notice: Some rule and signature updates may not work without other compoents being updated, so if you set this to "rules only" be sure to regularly check your system for any software updates for ASL, or other components for rules only users (such as modsecurity) to be fully protected and to ensure compatibility.

How can I disable automatic updates?

Change this setting in /etc/asl/config




What is the /var/asl/data/templates directory for

Warning: modifications of these templates is not supported.

Templates in this directory are used to generate various configuration files aum needs.

How can I change the tortix_waf.conf file?

aum will manage this file from settings in /etc/asl/config. Editing this file directly is not supported.

What are the asl-php rpms for?

This is actually a legacy thing with AUM. AUM doesn't use the asl-php RPMs anymore. It uses curl. As a result these RPMs are no longer used.

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