Splunk Installation:
On Google Cloud Windows 2016 VM
1. Change Web Management Port from 8000 to 80
Splunk enterprise default http/https port is 8000. You can use either Splunk Web GUI to change it to some other port.
To change the ports from their installation settings:
- Log into Splunk Web as the admin user.
- Click Settings in the top-right of the interface.
- Click the Server settings link in the System section of the screen.
- Click General settings.
- Change the value for either Management port or Web port, and click Save.
You may need to update your local firewall configuration based on your new port. Here is an example to change my Windows 2016 server’s firewall configuration to allow tcp port 80.
2. Fortinet Fortigate App for Splunk
Youtube Video:
2.1 Device
type=”traffic” AND index=”fortinet” | stats dc(devid)
2.2 Virtual Domains
type=”traffic” AND index=”fortinet” | eval dev-vd= devid.”-“.vd | stats dc(dev-vd)
2.3 Sessions
Original:
type=”traffic” AND index=”fortinet” | eval dev-sess= devid.”-“.session_id | stats dc(dev-sess)
Change to :
type=”traffic” AND index=”fortinet” | eval dev-sess= devid.”-“.sessionid | stats dc(dev-sess)
type=”traffic” AND index=”fortinet” | stats dc(sessionid)
2.4 Session Transferred Overtime
index=”fortigate” type=”traffic” |timechart count by devname
2.5 Top 20 Applications
index=”fortigate” type=”traffic” | TOP limit=20 app
2.6 Threat
type=”UTM” AND index=”fortinet” AND (apprisk=critical OR apprisk=high OR apprisk=medium OR apprisk=low) | timechart count by apprisk
2.6 Application by Destination Countries
index=”fortigate” type=”traffic” | iplocation “dstip” | geostats count by app
3. Customized Dashboard
3.1 Traffic Sessions by Destination IP
index=”fortigate” srcip=* dstip=* type=”traffic” action=* NOT dstip=”255.255.255.255″ | timechart count by dstip
3.2 Traffic Sessions by Action
index=”fortigate” srcip=* dstip=* type=”traffic” action=* | timechart count by action
3.3 Statistic for UTM
index=”fortigate” OR index=main type=utm | stats count by srcip,dstip,hostname,url,service,direction,app,apprisk | sort -count
4. New Data Input – UDP 514 for Syslog
5. Reset Splunk to Factory Default
5.1 Clean all eventdata (Database / Indexes)
[email protected]:~$ sudo su [email protected]:/home/johnyan_ca# /opt/splunk/bin/splunk stop Stopping splunkd... Shutting down. Please wait, as this may take a few minutes. .. Stopping splunk helpers... Done. [email protected]:/home/johnyan_ca# /opt/splunk/bin/splunk clean eventdata This action will permanently erase all events from ALL indexes; it cannot be undone. Are you sure you want to continue [y/n]? y Cleaning database _audit. Cleaning database _internal. Cleaning database _introspection. Cleaning database _telemetry. Cleaning database _thefishbucket. Cleaning database fortinet. Cleaning database history. Cleaning database main. Cleaning database summary. Cleaning database unix_summary. Cleaning database windows. Disabled database 'splunklogger': will not clean.
5.2 Remove all apps installed
[email protected]:/home/johnyan_ca# cd /opt/splunk/etc/apps/ [email protected]:/opt/splunk/etc/apps# ls SplunkAppForFortinet alert_webhook learned splunk_gdi SplunkForwarder appsbrowser legacy splunk_httpinput SplunkLightForwarder eventid sample_app splunk_instrumentation Splunk_TA_fortinet_fortigate framework search splunk_monitoring_console Splunk_TA_linux gettingstarted sh_collectd user-prefs Splunk_TA_nix introspection_generator_addon splunk_app_for_nix alert_logevent launcher splunk_archiver [email protected]:/opt/splunk/etc/apps# rm -rf SplunkAppForFortinet/ [email protected]:/opt/splunk/etc/apps# rm -rf Splunk_TA_fortinet_fortigate/ [email protected]:/opt/splunk/etc/apps# rm -rf Splunk_TA_linux/ [email protected]:/opt/splunk/etc/apps# rm -rf Splunk_TA_nix/ [email protected]:/opt/splunk/etc/apps# rm -rf eventid/ [email protected]:/opt/splunk/etc/apps# rm -rf splunk_app_for_nix/
If you just want to reset app’s configuration, you can use following command to remove local configuration.
/opt/splunk/etc/apps# rm -rf eventid/local/*
Last step is to start splunk application.
[email protected]:/opt/splunk/etc/apps# /opt/splunk/bin/splunk start Splunk> Winning the War on Error Checking prerequisites... Checking http port [80]: open Checking mgmt port [8089]: open Checking appserver port [127.0.0.1:8065]: open Checking kvstore port [8191]: open Checking configuration... Done. Checking critical directories... Done Checking indexes... Validated: _audit _internal _introspection _telemetry _thefishbucket fortinet history main summary Done Checking filesystem compatibility... Done Checking conf files for problems... Done Checking default conf files for edits... Validating installed files against hashes from '/opt/splunk/splunk-7.2.0-8c86330ac18-linux-2.6-x86_64-manifest' All installed files intact. Done All preliminary checks passed. Starting splunk server daemon (splunkd)... Done Waiting for web server at http://127.0.0.1:80 to be available....... Done If you get stuck, we're here to help. Look for answers here: http://docs.splunk.com The Splunk web interface is at http://ubuntu [email protected]:/opt/splunk/etc/apps#
6. Delete an index data
From GUI, use this command
index=”fortinet” | delete
or
index=”fortinet” AND sourcetype=Fortigate60D | delete
From command line:
[email protected]:~$ sudo su [sudo] password for john: [email protected]:/home/john# cd /opt/splunk/bin [email protected]:/opt/splunk/bin# ./splunk stop Stopping splunkd... Shutting down. Please wait, as this may take a few minutes. ........ Stopping splunk helpers... Done. [email protected]:/opt/splunk/bin# ./splunk clean eventdata -index fortinet -f Cleaning database fortinet. [email protected]:/opt/splunk/bin# ./splunk start Splunk> Be an IT superhero. Go home early. Checking prerequisites... Checking http port [80]: open Checking mgmt port [8089]: open Checking appserver port [127.0.0.1:8065]: open Checking kvstore port [8191]: open Checking configuration... Done. Checking critical directories... Done Checking indexes... Validated: _audit _internal _introspection _telemetry _thefishbucket fortinet history main summary Done Checking filesystem compatibility... Done Checking conf files for problems... Done Checking default conf files for edits... Validating installed files against hashes from '/opt/splunk/splunk-7.2.0-8c86330ac18-linux-2.6-x86_64-manifest' All installed files intact. Done All preliminary checks passed. Starting splunk server daemon (splunkd)... Done Waiting for web server at http://127.0.0.1:80 to be available... Done If you get stuck, we're here to help. Look for answers here: http://docs.splunk.com The Splunk web interface is at http://ubuntu18 [email protected]:/opt/splunk/bin#
Unfortunately, those commands can not reclaim the space. You will have to wait until those index age timed out.