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# Using the SMC Active Update server

Once you have downloaded the databases on the SMC server, you must configure the SNS firewalls so that they use it as their Active Update server. This can be configured manually if you have few SNS firewalls, or automatically using a script.

The following files in the folder /etc/certs/activeupdate are used for TLS negotiations.

- server.crt: server certificate,

- server.key: server's private key,

- activeupdate-ca.crt: certification authority that generates the server's certificate,

- activeupdate-ca.key: private key of the certification authority.

These are generated the first time SMC is launched. The authority certificate is self-signed.

When SMC is updated, default files are automatically updated as well.

The following table lists the lowest versions of SMC required if you are using the SMC Active Update server with default certificates:

Version SNS | Lowest SMC version
--- | ---
5.1.x and higher | 3.9.2
4.3.x from 4.3.31 upwards 4.8.x from 4.8.7 upwards 5.0.x | 3.9.1
All other versions from 4.3.0 upwards | 3.1.0

Default certificates can be replaced with your own certification authority and your server certificate. In this case, restart the SMC server with the command `nrestart smc` after you have replaced them.

When SMC is updated, your custom files will be kept.

Configuring SNS firewalls manually

1. In the web interface of the SMC server, select Configuration > Active Update server.
2. In the Contact URL column, click on the URL to copy it.
3. On each SNS firewall, declare the SMC server as the Active Update server by indicating the URL copied earlier. For more information about Active Update, refer to the SNS User guide.
4. Create the static object that was used in the URL copied in step 2, and assign to it the IP address used to contact the SMC server.

Configuring SNS firewalls automatically

1. First, import the SMC Active Update certificate on each SNS firewall:

   1. In the web interface of the SMC server, select Configuration > Active Update server.
   2. Under Information, click on Server certificate to download the certificate.
   3. Create the Active Update configuration script with the commands described in the following example by replacing server.crt if necessary with the file name of your certificate:

      PKI IMPORT format=pem type=ca $FROM_DATA_FILE("activeupdate-ca.crt")

   4. Follow the usual steps for running a script, as shown in the section Running the SNS CLI script from the web interface by selecting the file of the certificate in the Attachments related to the script menu.
2. Create objects on the SNS firewalls that would make it possible to verify the SMC certificate:
   1. Create the object creation script with the commands described in the following example.

      CONFIG OBJECT HOST NEW name=activeupdate0.smc.local ip=<[private or public SMC server IP address]> resolve=static update=1
      CONFIG OBJECT HOST NEW name=activeupdate1.smc.local ip=<[private or public SMC server IP address]> resolve=static update=1
      CONFIG OBJECT ACTIVATE

      The value of the name setting consists of an object name of your choice followed by the domain name. The private IP address is the one that can be seen in the IP address column in the Configuration > Active Update server panel in SMC.

   2. Follow the usual steps for running a script, as shown in the section Running the SNS CLI script from the web interface.
3. Create the Active Update configuration script with the commands described in the following example.

   CONFIG AUTOUPDATE SERVER
   url=https://activeupdate0.smc.local:8081/activeupdate
   CA="CN=SMC ActiveUpdate Root CA" state=on
   CONFIG AUTOUPDATE ACTIVATE

   You will find the value of the url and CA settings in the Contact URL and Server certificate fields in Configuration > Active Update server.

   You can add custom settings to the script. For further information, refer to the CLI Serverd Commands Reference Guide.

   TIP
   To specify several URLs and CAs, separate them with commas:
   url=https://activeupdate0.smc.local:8081/activeupdate,https://activeupdate1.smc.local:8081/activeupdate/activeupdate CA="CN=*.smc.local,CN=*.smc.local" state=on

4. Follow the usual steps for running a script, as shown in the section Running the SNS CLI script from the web interface.