Configure an external Syslog server

This topic describes how to collect logs from an external Syslog server. It is relevant only for servers running CentOS 7.

• To forward ASMS Syslog messages to a remote Syslog server, see Configure ASMS to generate and send Syslog messages .

• For information how to configure AFA to receive traffic and audit logs from defined devices, see Add devices to AFA.

Do the following:

1. Log in to the syslog server as user root.

2. If the user for connecting to the syslog server is other than root, run the following command:

   chmod o+x /home/<user>

   where <user> is the user other than root.

   Then run the following to check if the user permissions are set (they should include -x flag):

   ls -l /home/<user>

3. If you have rsyslog installed, remove it since it is a redundant package by running the commands:

   yum remove -y rsyslog

   rm -rf /var/lib/rsyslog

4. The following dependencies are required:

   • sharutils 4.13.3

   • syslog-ng 3.5.6

   Tip: To check if you have them installed use the following command:

   rpm -q sharutils syslog-ng

   The correct output should be:

   sharutils-4.13.3-8.el7.x86_64

   syslog-ng-3.5.6-3.el7.x86_64

   If dependencies are installed jump to the next step. Otherwise:

   1. If you have internet connectivity: Run the following commands as root user to install them:

      yum install -y epel-release

      yum install -y sharutils syslog-ng

   2. If you do not have internet connectivity: Install manually.

5. On the syslog server, open the following file for editing: /etc/syslog-ng/syslog-ng.conf.

6. In the following line, replace afa with the name of the user connecting to the syslog server.

   include "/home/afa/algosec/syslog_processor/algosec_syslog-ng.conf";

   • For a user other than root:

     include "/home/[username]/algosec/syslog_processor/algosec_syslog-ng.conf";

     For example:

     include "/home/msanchez/algosec/syslog_processor/algosec_syslog-ng.conf";

     Note: This user is the username you configured in the SSH User Name or User Name field when you specified the syslog server in the AFA Administration > DEVICES SETUP area. For more details, see Add a new syslog server.

   • For a root user, replace text as follows:

      include "/root/algosec/syslog_processor/algosec_syslog-ng.conf";

7. Save your changes to the syslog-ng.conf file.

8. In AFA, in the Syslog Server Settings dialog, click Test Connectivity to ensure that the connection works.

   

   Tip: If you don't still have the Syslog Server Settings dialog open in the AFA Administration area, browse back to the Administration area > DEVICES SETUP > device details page for your device.

   Scroll down to the Log Collection and Monitoring area, and click Edit to open the Syslog Server Settings dialog again.

9. Click OK and Finish to start the AFA installation process on the syslog server.

   Note: You must complete the full device configuration wizard, clicking Next if there are multiple pages involved, through to the Finish button.D

10. Stop and disable the following services on the external syslog server by running for each:

    For the command, use service names as shown here

    Service	Service name (to be entered in command)	Command string
    HTTPD	httpd	systemctl disable --now httpd
    MONGO	mongod	systemctl disable --now mongod
    ACTIVEMQ	activemq	systemctl disable --now activemq
    POSTGRESQL	postgresql	systemctl disable --now postgresql
    ALGOSEC_DFS	algosec-dfs	systemctl disable --now algosec-dfs
    MS_HADR	ms-hadr	systemctl disable --now ms-hadr
    AFF_BOOT	aff-boot	systemctl disable --now aff-boot
    MS_METRO	ms-metro	systemctl disable --now ms-metro
    MS_CLOUNDLICENSING	ms-cloudlicensing	systemctl disable --now ms-cloudlicensing
    MS_CONFIGURATION	ms-configuration	systemctl disable --now ms-configuration
    MS_VULNERABILITIES	ms-vulnerabilities	systemctl disable --now ms-vulnerabilities
    MS_MAP_DIAGNOSTICS	ms-mapDiagnostics	systemctl disable --now ms-mapDiagnostics
    MS_WATCHDOG	ms-watchdog	systemctl disable --now ms-watchdog
    MS_BACKUP_RESTORE	ms-backuprestore	systemctl disable --now ms-backuprestore
    MS_BATCH	ms-batch-application	service ms-batch-application
    MS_DEVICE_MANAGER	ms-devicemanager	systemctl disable --now ms-devicemanager
    MS_TRAFFIC_LOG_MANAGER	ms-trafficlogmanager	systemctl disable --now ms-trafficlogmanager
    MS_BFLOW	ms-bflow	systemctl disable --now ms-bflow
    MS_DEVICE_DRIVER_AWS	ms-devicedriver-aws	systemctl disable --now ms-devicedriver-aws
    MS_DEVICE_DRIVER_AZURE	ms-devicedriver-azure	systemctl disable --now ms-devicedriver-azure
    MS_VALIDATION	ms-validation	systemctl disable --now ms-validation
    MS_POLICY_OPTIMIZATION	ms-policy-optimizations	systemctl disable --now ms-policy-optimizations
    MS_AUTODISCOVERY	ms-autodiscovery	systemctl disable --now ms-autodiscovery
    MS_CLOUDFLOW_BROKER	ms-cloudflow-broker	systemctl disable --now ms-cloudflow-broker
    MS_AAD_LOG_SENSOR	ms-aad-log-sensor	systemctl disable --now ms-aad-log-sensor stop
    MS_MULTIPUSH	ms-multipush	systemctl disable --now ms-multipush stop
    NETWORK_SENSOR	networksensor	systemctl disable --now networksensor
    KIBANA	kibana	systemctl disable --now kibana
    ELASTIC	elasticsearch	systemctl disable --now elasticsearch
    LOG_STASH	logstash	systemctl disable --now logstash
    ALGOCARE	algocare	systemctl disable --now algocare
    CHISEL	chisel	systemctl disable --now chisel

11. Restart the syslog server to implement the new configuration. To do this, on the syslog server, run the following command as user root:

    service syslog-ng restart

    Your syslog-ng server is now ready to use.

 

â Next steps:

• Configure an external syslog server for ASMS messages