Quick Notes 1.0.1

Posted By admin  On 15.09.21

Install Suricata Update¶

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Note

If you have already installed Suricata 4.1 or newer youlikely already have Suricata-Update installed. Please checkif the suricata-update command is available to youbefore installing.

Quick Notes 1.0.1 Download

Suricata-Update is a tool written in Python and best installed withthe pip tool for installing Python packages.

Pip can install suricata-update globally making it available toall users or it can install suricata-update into your homedirectory for use by your user.

Note

At some point suricata-update should be bundled withSuricata avoid the need for a separate installation.

To install suricata-update globally:

or to install it to your own directory:

Note

When installing to your home directory thesuricata-update program will be installed to$HOME/.local/bin, so make sure this directory is in yourpath:

Quick Notes 1.0.1 App

Directories and Permissions¶

In order for suricata-update to function, the followingpermissions are required:

  • Directory /etc/suricata: read/write access
  • Directory /var/lib/suricata/rules: read/write access
  • Directory /var/lib/suricata/update: read/write access

One option is to simply run suricata-update as root or withsudo.

Note

It is recommended to create a suricata group and setupthe above directories with the correct permissions forthe suricata group then add users to the suricatagroup.

Steps to setup the above directories with the correct permissions:

First, create a group suricata:

Next, change the group of the directories and its files recursively:

Note

The paths /etc/suricata and /var/lib above are usedin the default configuration and are dependent on paths setduring compilation. By default, these paths are set to/usr/local.Please check your configuration for appropriate paths.

Setup the directories with the correct permissions for the suricatagroup:

Now, add user to the group:

Verify whether group has been changed:

Reboot your system. Run suricata-update without a sudo to checkif suricata-update functions.

Update Your Rules¶

Without doing any configuration the default operation ofsuricata-update is to use the Emerging Threats Open ruleset.

Example:

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This command will:

  • Look for the suricata program on your path to determine itsversion.
  • Look for /etc/suricata/enable.conf, /etc/suricata/disable.conf,/etc/suricata/drop.conf, and /etc/suricata/modify.conf to look forfilters to apply to the downloaded rules. These files are optionaland do not need to exist.
  • Download the Emerging Threats Open ruleset for your version ofSuricata, defaulting to 4.0.0 if not found.
  • Apply enable, disable, drop and modify filters as loaded above.
  • Write out the rules to /var/lib/suricata/rules/suricata.rules.
  • Run Suricata in test mode on/var/lib/suricata/rules/suricata.rules.

Note

Quick Notes 1.0.1 Notes

Suricata-Update is also capable of triggering a rule reload,but doing so requires some extra configuration that will becovered later.

Configure Suricata to Load Suricata-Update Managed Rules¶

Note

If suricata-update was installed for you by Suricata,then your Suricata configuration should already be setup towork with Suricata-Update.

If upgrading from an older version of Suricata, or running adevelopment version that may not be bundled with Suricata-Update, youwill have to check that your suricata.yaml is configured forSuricata-Update. The main difference is the default-rule-pathwhich is /var/lib/suricata/rules when using Suricata-Update.

You will want to update your suricata.yaml to have the following:

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If you have local rules you would like Suricata to load, these can belisted here as well by using the full path name.

Discover Other Available Rule Sources¶

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First update the rule source index with the update-sources command,for example:

Then list the sources from the index. Example:

Now enable the ptresearch/attackdetection ruleset:

And update your rules again:

List Enabled Sources¶

Quick Notes 1.0.1

Disable a Source¶

Disabling a source keeps the source configuration but disables. Thisis useful when a source requires parameters such as a code that youdon’t want to lose, which would happen if you removed a source.

Enabling a disabled source re-enables without prompting for userinputs.

Remove a Source¶

This removes the local configuration for this source. Re-enablinget/pro will requiring re-entering your access code.