CLI: Example for Sending IPv4 Session Logs to the eLog Log Host

Procedure

1. Important check items before configuration

   Before configuring the FW and eLog, pay attention to the following important check items and complete the configuration based on the actual situation:

   • The time zone and time of the FW shall be the same as those of the eLog.

     If the time zone or time of the FW is different from that of the eLog collector, log query results will be affected. You are advised to use NTP to make the FW and eLog as the clients to synchronize time from the clock source. If NTP is not deployed on the network, you can manually adjust the time on the FW to ensure time consistency between the FW and eLog.

   • Specify the method of managing the log source (that is, the FW) on the eLog.

     Currently, the eLog supports two FW management methods: manual adding and automatic discovery. You are advised to manually add the FW because this method is simple and you do not need to perform extra configuration on the FW. When there are a large number of FW, you can use the other method, automatic discovery. If this method is used, you need to set SNMP parameters on the FW.

2. Configure the FW.

   1. Check whether the time zone and time of the FW are the same as those of the eLog collector. In the case of inconsistency, run the following commands to adjust the time zone or time of the FW.

      # Adjust the time zone of theFW to keep consistency with that of the eLog collector. Assume that the eLog collector is in the Beijing time zone. The time of the collector is 8 hours earlier than Universal Time Coordinated (UTC). Use the add 08:00:00 parameter. If the eLog collector is in a time zone where the time is later than UTC, use the minus parameter.

      <FW> clock timezone BJ add 08:00:00

      # Adjust the time of the FW to keep consistency with that of the eLog collector. Assume that the current time of the eLog collector is 00:00:00 on December 1, 2018.

      <FW> clock datetime 0:0:0 2018/12/01

      After the preceding configuration, run the display clock command to view configuration results.

      <FW> display clock
      2018-12-01 00:00:06
      Tuesday
      Time Zone(Default Zone Name) : UTC
      Daylight saving time :
               Name        : utc
               Repeat mode : repeat
               Start year  : 2011
               End year    : 2018
               Start time  : 01-01 12:11:00
               End time    : 12-04 01:00:00
               Saving time : 01:00:00

   2. If the eLog manages FW through automatic discovery, SNMP parameters must be configured on the FW. However, if the eLog manages FW through manual adding, skip this step.

      # Configure SNMP parameters on FW, so that they can be automatically discovered by the eLog. As SNMPv3 is securer than SNMPv1 or SNMPv2c, you are advised to use SNMPv3. At the same time, you are advised to use SHA2-256 as the authentication protocol and AES128 as the encryption protocol.

      <FW> system-view 
      [FW] snmp-agent sys-info version v3 
      [FW] snmp-agent group v3 group privacy 
      [FW] snmp-agent usm-user v3 admin group group
      [FW] snmp-agent usm-user v3 admin authentication-mode sha2-256
      Please configure the authentication password (8-64) 
      Enter Password:                                                                  
      Confirm Password:
      [FW] snmp-agent usm-user v3 admin privacy-mode aes128 
      Please configure the authentication password (8-64) 
      Enter Password:                                                                  
      Confirm Password:

   3. Complete the basic configuration such as the configuration of the IP address and security zone of the interface.

      # Configure the IP address of the interface and assign the interface to the security zone. Here the interface connecting the firewall to the eLog is taken as an example. If the firewall and eLog belong to different networks, configure a route on the firewall to the eLog.

      [FW] interface GigabitEthernet 0/0/1 
      [FW-GigabitEthernet 0/0/1] ip address 172.16.81.1 16 
      [FW-GigabitEthernet 0/0/1] quit 
      [FW] firewall zone dmz 
      [FW-zone-dmz] add interface GigabitEthernet 0/0/1 
      [FW-zone-dmz] quit

      

      If the eLog manages firewalls through automatic discovery, you need to run the service-manage SNMP permit command to enable the access permission on SNMP after running the ip address 172.16.81.1 16 command; if the eLog manages firewalls through manual adding, you do not need to run the command.

   4. Configure the security policy.

      # Configure the security policy for service traffic.

      [FW] security-policy
      [FW-policy-security] rule name policy1
      [FW-policy-security-rule-policy1] source-zone trust
      [FW-policy-security-rule-policy1] destination-zone untrust
      [FW-policy-security-rule-policy1] source-address 192.168.0.0 24
      [FW-policy-security-rule-policy1] action permit
      [FW-policy-security-rule-policy1] quit

   5. Configure the NAT policy.

      # Configure the NAT address pool and use the PAT mode (also the default mode). If the nat-mode no-pat command is used here to specify the No-PAT mode, the firewall will generate No-PAT-mode session logs. You can check the corresponding log information in Session Analysis > IPv4 Session Query > IPv4 No-PAT on the eLog.

      [FW] nat address-group addr1
      [FW-nat-address-group-addr1] mode pat
      [FW-nat-address-group-addr1] section 0 192.168.5.100 192.168.5.120
      [FW-nat-address-group-addr1] quit

      # Configure the NAT policy and reference the NAT address pool.

      [FW] nat-policy
      [FW-policy-nat] rule name policy1
      [FW-policy-nat-rule-policy1] source-zone trust
      [FW-policy-nat-rule-policy1] destination-zone untrust
      [FW-policy-nat-rule-policy1] source-address 192.168.0.0 24
      [FW-policy-nat-rule-policy1] action source-nat address-group addr1
      [FW-policy-nat-rule-policy1] quit
      [FW-policy-nat] quit

   6. Configure the log host.
      # Set the IP address of the log host to 172.16.110.168 and port to 9002. (the eLog adopts the session mode to collect logs.)

      

      In addition, log collection in netflow mode is supported. To view netflow session logs, set the port number to 9996. This document uses log collection in session mode as an example.

      [FW] firewall log host 1 172.16.110.168 9002

   7. Configure the source address and source port to be used by the firewall for sending service logs.

      [FW] firewall log source 172.16.81.1 6666

   8. Configure the session log type according to actual requirements.

      

      If the firewall simultaneously outputs session aging logs, session creation logs, and periodic session logs, the number of logs received by the eLog increases sharply, which consumes the storage space of the eLog. Therefore, perform this configuration with caution in practice.

      By default, the eLog does not parse session creation logs. If it is required that session creation logs be parsed and displayed on the eLog, do as follows:

      1. Open LogCenter/collector/etc/conf/logCollector.xml on the collector, search for IsReceiveSessionBeginLog, and change the value to true. Then, restart the eLog.
      2. On the eLog's web UI, choose Session Analysis > Rules Configuration and select The duration of the session should have intersection with the query time range.

      # If it is required that logs be output as well when sessions are created, run the following commands.

      [FW] firewall log session new-session enable

      # If it is required that logs be output periodically, run the following commands. It is assumed that session logs are output once every 120 minutes.

      [FW] firewall log session periodic enable
      [FW] firewall log session periodic time-interval 120

      # When the address pool is in No-PAT mode, run the following commands if you want to output the information on the dynamic server-map table generated by NAT No-PAT. You can view the corresponding log information on the Session Analysis > IPv4 Session Query > IPv4 No-PAT tab of the eLog's web UI.

      [FW] firewall log nat-nopat enable

   9. Enable the session log function.

      # Enable the record function for session logs in the security policy for service traffic.

      [FW] security-policy
      [FW-policy-security] rule name policy1
      [FW-policy-security-rule-policy1] session logging
      [FW-policy-security-rule-policy1] quit
      [FW-policy-security] quit

3. Configure the eLog.

   Assume that the eLog has been successfully installed; the collector works normally; and the disk space has been planned. Operations for managing log sources and viewing log reports on the eLog are as follows.

   For details about how to install and use the eLog, see the product documentation of the corresponding version in Technical Support > Product Support > Documentation > Security > eLog.

   1. Log in to the eLog using an administrator account.
   2. Choose System > System Management > Log Source List.
   3. Select the log source management method, manual adding or automatic discovery. Manual adding is recommended.

      • Manage log sources by manually adding them:

        1. Click and set the following parameters.

           

        2. Click OK. A message is displayed, indicating the configuration success.
        3. Click OK.

      • Manage log sources by automatically discovering them:

        1. Click and set the following parameters. The authentication and authorization protocol and password as well as the data encryption protocol and password must be consistent with the configuration on the FW.

           If there are many log sources on the network and these log sources are configured with the same SNMP parameters, you can create an SNMP parameter template on the eLog in advance, set the automatic discovery mode, and reference the SNMP parameter template to reduce the configuration workload.

           

        2. Click Start Discovery.
        3. After discovery is complete, the discovery result shows information about discovered log sources. In the Discovery Result dialog box, click Close.

   4. Choose System > System Management > Service Management.
   5. Click next to the collector. Then click in the Operation column of the collector.

      The collector configuration window is displayed.

   6. Click .
   7. Select log sources to be associated, as shown in the following figure:

      

   8. Click Next and configure the log collection mode.

      Configure the corresponding log collection mode on the eLog, select SESSION, and set the port number to 9002. If the FW supports the UTM feature, select Enable the UTM feature.

   9. Click Finish.