Preparation

This section describes preparations for signature database updates.

Checking the License Status

Before updating a signature database, ensure that the license for the update service has been purchased and activated.

To check the license status, perform the following operation:

Run the display license command to check whether the required license has been activated or has expired.
- If the status of the signature database to be updated is Disabled, activate the license. For details on how to activate the license, see License Management.
- If the status of the signature database to be updated is Enabled, check whether the license has expired. If yes, purchase the license.

Checking the Free Space of the CF Card and Memory

Before updating a signature database, check whether the free space of the CF card and memory is sufficient. The following table lists the CF card and memory space required for updating various signature databases.

Signature Database	CF Card Space	Memory Space
Antivirus signature database (AV-SDB)	USG6510E/6510E-POE: 10 MB or higher USG6530E: 50 MB or higher Other models: 240 MB or higher	USG6510E/6510E-POE: 36 MB or higher USG6530E: 72 MB or higher USG6515E: 360 MB or higher USG6525E: 360 MB or higher USG6550E/6560E/6580E: 400 MB or higher USG6555E/6565E/6575E-B/6585E/6605E-B: 400 MB or higher USG6615E/6625E: 420 MB or higher USG6610E/6620E: 420 MB or higher USG6635E/6655E: 440 MB or higher USG6630E: 620 MB or higher USG6650E: 620 MB or higher USG6680E: 620 MB or higher USG6712E/6716E: 820 MB or higher
Malicious domain name database	10 MB or higher	USG6510E/6510E-POE: 30 MB or higher USG6530E: 50 MB or higher USG6515E: 50 MB or higher USG6525E: 50 MB or higher USG6550E/6560E/6580E: 90 MB or higher USG6555E/6565E/6575E-B/6585E/6605E-B: 90 MB or higher USG6615E/6625E: 110 MB or higher USG6610E/6620E: 110 MB or higher USG6635E/6655E: 130 MB or higher USG6630E: 310 MB or higher USG6650E: 310 MB or higher USG6680E: 310 MB or higher USG6712E/6716E: 510 MB or higher
IP reputation database	80 MB or higher NOTE: The USG6510E/6510E-POE and USG6530E do not support the IP reputation database.	8 MB or higher
IPS signature database (IPS-SDB)	30 MB or higher	USG6510E/6510E-POE: 52 MB or higher USG6530E: 100 MB or higher USG6515E: 440 MB or higher USG6525E: 440 MB or higher USG6550E/6560E/6580E: 480 MB or higher USG6555E/6565E/6575E-B/6585E/6605E-B: 480 MB or higher USG6615E/6625E: 500 MB or higher USG6610E/6620E: 500 MB or higher USG6635E/6655E: 520 MB or higher USG6630E: 700 MB or higher USG6650E: 700 MB or higher USG6680E: 700 MB or higher USG6712E/6716E: 900 MB or higher
Service awareness signature database (SA-SDB)	10 MB or higher	USG6510E/6510E-POE: 45 MB or higher USG6530E: 140 MB or higher USG6515E: 440 MB or higher USG6525E: 440 MB or higher USG6550E/6560E/6580E: 480 MB or higher USG6555E/6565E/6575E-B/6585E/6605E-B: 480 MB or higher USG6615E/6625E: 500 MB or higher USG6610E/6620E: 500 MB or higher USG6635E/6655E: 520 MB or higher USG6630E: 700 MB or higher USG6650E: 700 MB or higher USG6680E: 700 MB or higher USG6712E/6716E: 900 MB or higher
File reputation signature database	USG6530E: 10 MB or higher Other models: 190 MB or higher	USG6510E/6510E-POE: 30 MB or higher USG6530E: 50 MB or higher USG6515E: 80 MB or higher USG6525E: 80 MB or higher USG6550E/6560E/6580E: 120 MB or higher USG6555E/6565E/6575E-B/6585E/6605E-B: 120 MB or higher USG6615E/6625E: 140 MB or higher USG6610E/6620E: 140 MB or higher USG6635E/6655E: 160 MB or higher USG6630E: 340 MB or higher USG6650E: 340 MB or higher USG6680E: 340 MB or higher USG6712E/6716E: 540 MB or higher
Region identification signature database	10 MB or higher	6 MB or higher
Asset identification signature database	5 MB or higher NOTE: Only the USG6510E/6510E-POE does not support the asset identification signature database.	20 MB or higher

To check the free space of the root directory, perform the following operations:

In the user view, run the dir command to check the free space of the CF card on the MPU.

The example command output of the FW is as follows:

<sysname> dir
Directory of hda1:/                                                             
                                                                                
  Idx  Attr     Size(Byte)  Date        Time       FileName                     
    0  -rw-            754  Feb 06 2015 15:35:33   private-data.txt             
    1  -rw-          5,805  Feb 06 2015 15:35:51   cfgfile.zip                  
    2  drw-              -  Feb 06 2015 09:07:58   default-sdb                  
    3  drw-              -  Jul 08 2014 17:02:48   conf                         
                               ........                                         
   48  -rw-             36  Jan 30 2015 10:28:44   $_patchstate_reboot          
   49  -rw-          1,063  Feb 06 2015 09:13:26   nlog.log                     
   50  -rw-    173,569,921  Feb 04 2015 20:31:10   sup_c30.bin                  
                                                                                
1,200,576 KB total (379,168 KB free)

Optional: In the user view, run the delete command to delete unwanted files from the CF card if the free space is insufficient.

Files are deleted and cannot be restored after the delete command with the /unreserved parameter is executed.

Checking the Current Update Status

Signature databases cannot be updated simultaneously. You can update a signature database only after the current update status is idle.

To check the current update status, perform the following operation:

Run the display update status command to check the update status of the signature database.
```
<sysname> display update status
  Current Update Status: Idle.
```
If Current Update Status is Idle, you can update the desired signature database. Otherwise, repeat the display update status command until Current Update Status changes to Idle, and then update the desired signature database.

Checking the Signature Database Version

Check the signature database version to determine whether the signature database needs to be updated.

To check the signature database version, perform the following operation:

Run the display version { { av-sdb | cnc | file-reputation | ip-reputation | ips-sdb | sa-sdb } ^* | location-sdb | asset-sdb } command to check the signature database version.

# View the version of the AV signature database.

<sysname> display version av-sdb
AV SDB Update Information List:                                               
----------------------------------------------------------------              
  Current Version:                                                            
    Signature Database Version    : 2016090600                             
    Signature Database Size(byte) : 28032                                         
    Update Time                   : 08:34:03 2016/09/07                       
    Issue Time of the Update File : 00:00:33 2016/09/07                       
                                                                              
  Backup Version:                                                             
    Signature Database Version    : 2016090100                              
    Signature Database Size(byte) : 26752                                         
    Update Time                   : 07:18:56 2016/09/02                       
    Issue Time of the Update File : 20:11:40 2016/09/02                       
                                                                              
  Download Version:                                                           
    Signature Database Version    :                                           
    Signature Database Size(byte) : 0                                         
----------------------------------------------------------------