In a distributed deployment, the manager node controls all other nodes via salt. However, generating custom traffic to test the alert can sometimes be a challenge. You can see that we have an alert with the IP addresses we specified and the TCP ports we specified. Generate some traffic to trigger the alert. Security Onion is a free and open-source Linux distribution prepared for intrusion detection, security monitoring, and log management with the assistance of security tools namely Snort,. When editing these files, please be very careful to respect YAML syntax, especially whitespace. If you previously added a host or network to your firewall configuration and now need to remove them, you can use so-firewall with the excludehost option. Give feedback. After select all interfaces also ICMP logs not showing in sguil. If it is, then the most expedient measure may be to resolve the misconfiguration and then reinvestigate tuning. 3. Run the following command to get a listing of categories and the number of rules in each: In tuning your sensor, you must first understand whether or not taking corrective actions on this signature will lower your overall security stance. Adding local rules in Security Onion is a rather straightforward process. Interested in discussing how our products and services can help your organization? Taiwan, officially the Republic of China (ROC), is a country in East Asia.It is located at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the northeast, and the Philippines to the south. "; reference: url,http://holisticinfosec.blogspot.com/2011/12/choose-2011-toolsmith-tool-of-year.html; content: "toolsmith"; flow:to_server; nocase; sid:9000547; metadata:policy security-ips; rev:1). The files in this directory should not be modified as they could possibly be overwritten during a soup update in the event we update those files. Our products include both the Security Onion software and specialized hardware appliances that are built and tested to run Security Onion. Data collection Examination Check your syslog-ng configuration for the name of the local log source ("src" is used on SUSE systems). Salt minions must be able to connect to the manager node on ports, /opt/so/saltstack/local/pillar/global.sls, /opt/so/saltstack/local/pillar/minions/.sls, https://docs.saltproject.io/en/getstarted/system/communication.html, https://docs.saltproject.io/en/latest/topics/troubleshooting/yaml_idiosyncrasies.html. While Vanderburgh County was the seventh-largest county in 2010 population with 179,703 people, it is also the eighth-smallest county in area in Indiana and the smallest in southwestern Indiana, covering only 236 square miles (610 km2). You can read more about this at https://redmine.openinfosecfoundation.org/issues/4377. Revision 39f7be52. Run rule-update (this will merge local.rules into downloaded.rules, update. The National Institutes of Standards and Technology (NIST) 800-171 cybersecurity standard has four safeguards that are related to network traffic monitoring: 3.13.1: Monitor, control, and protect organizational communications (i.e., information transmitted or received by organizational information Do you see these alerts in Squert or ELSA? In a distributed deployment, the manager node controls all other nodes via salt. Modifying these values outside of so-allow or so-firewall could lead to problems accessing your existing hosts. Let's add a simple rule that will alert on the detection of a string in a tcp session: Run rule-update (this will merge local.rules into downloaded.rules, update sid-msg.map, and restart processes as necessary): If you built the rule correctly, then Snort/Suricata should be back up and running. There are three alerting engines within Security Onion: Suricata, Wazuh and Playbook (Sigma). To unsubscribe from this group and stop receiving emails from it, send an email to. Please note that Suricata 6 has a 64-character limitation on the IP field in a threshold. The signature id (SID) must be unique. Any pointers would be appreciated. Logs. For example, if ips_policy was set to security, you would add the following to each rule: The whole rule would then look something like: alert tcp any any -> $HOME_NET 7789 (msg: "Vote for Security Onion Toolsmith Tool of 2011! Adding local rules in Security Onion is a rather straightforward process. For example, suppose that we want to modify SID 2100498 and replace any instances of returned root with returned root test. 1. Where is it that you cannot view them? The territories controlled by the ROC consist of 168 islands, with a combined area of 36,193 square . Now we have to build the association between the host group and the syslog port group and assign that to our sensor node. Download Security Onion 20110116. Start creating a file for your rule. the rule is missing a little syntax, maybe try: alert icmp any any -> $HOME_NET any (msg:"ICMP Testing"; sid:1000001; rev:1;). It . Check out our NIDS tuning video at https://youtu.be/1jEkFIEUCuI! For a Security Onion client, you should dedicate at least 2GB RAM, but ideally 4GB if possible. Cannot retrieve contributors at this time. By default, only the analyst hostgroup is allowed access to the nginx ports. Another consideration is whether or not the traffic is being generated by a misconfigured piece of equipment. I have had issues with Sguil when working with a snapshot and have not found a fix yet.. On Monday, June 26, 2017 at 8:28:44 PM UTC+5:30, KennyWap wrote: security-onion+unsubscribe@googlegroups.com, https://groups.google.com/group/security-onion. This first sub-section will discuss network firewalls outside of Security Onion. You need to configure Security Onion to send syslog so that InsightIDR can ingest it. Revision 39f7be52. /opt/so/saltstack/default/salt/firewall/portgroups.yaml is where the default port groups are defined. Start by creating Berkeley Packet Filters (BPFs) to ignore any traffic that you dont want your network sensors to process. Copyright 2023 Cleaning up local_rules.xml backup files older than 30 days. Apply the firewall state to the node, or wait for the highstate to run for the changes to happen automatically. If you have Internet access and want to have so-yara-update pull YARA rules from a remote Github repo, copy /opt/so/saltstack/local/salt/strelka/rules/, and modify repos.txt to include the repo URL (one per line). The reason I have a hub and not a switch is so that all traffic is forwarded to every device connected to it so security onion can see the traffic sent from the attacking kali linux machine, to the windows machines. Fresh install of Security Onion 16.04.6.3 ISO to hardware: Two NICs, one facing management network, one monitoring mirrored port for test network Setup for Production Mode, pretty much all defaults, suricata create alert rules for /etc/nsm/local.rules and run rule-update Log into scapy/msf on kalibox, send a few suspicious packets Then tune your IDS rulesets. This error now occurs in the log due to a change in the exception handling within Salts event module. For some alerts, your understanding of your own network and the business being transacted across it will be the deciding factor. Please keep this value below 90 seconds otherwise systemd will reach timeout and terminate the service. You may want to bump the SID into the 90,000,000 range and set the revision to 1. If you would like to create a rule yourself and use it with Suricata, this guide might be helpful. Use one of the following examples in your console/terminal window: sudo nano local.rules sudo vim local.rules. /opt/so/saltstack/local/salt/firewall/portgroups.local.yaml defines custom port groups. (Alternatively, you can press Ctrl+Alt+T to open a new shell.) Security Onion is a free and open platform for threat hunting, enterprise security monitoring, and log management. . For more information, please see: # alert ip any any -> any any (msg:"GPL ATTACK_RESPONSE id check returned root"; content:"uid=0|28|root|29|"; classtype:bad-unknown; sid:2100498; rev:7; metadata:created_at 2010_09_23, updated_at 2010_09_23;), /opt/so/saltstack/local/pillar/minions/_.sls, "GPL ATTACK_RESPONSE id check returned root test", /opt/so/saltstack/default/pillar/thresholding/pillar.usage, /opt/so/saltstack/default/pillar/thresholding/pillar.example, /opt/so/saltstack/local/pillar/global.sls, /opt/so/saltstack/local/pillar/minions/.sls, https://docs.saltproject.io/en/latest/topics/troubleshooting/yaml_idiosyncrasies.html, https://redmine.openinfosecfoundation.org/issues/4377, https://blog.snort.org/2011/05/resolving-flowbit-dependancies.html. Network Security Monitoring, as a practice, is not a solution you can plug into your network, make sure you see blinking lights and tell people you are secure. It requires active intervention from an analyst to qualify the quantity of information presented. Logs . Salt sls files are in YAML format. In a distributed Security Onion environment, you only need to change the configuration in the manager pillar and then all other nodes will get the updated rules automatically. We offer both training and support for Security Onion. You received this message because you are subscribed to the Google Groups "security-onion" group. For more information about Salt, please see https://docs.saltstack.com/en/latest/. alert icmp any any -> any any (msg: "ICMP Testing"; sid:1000001; rev:1;). Copyright 2023 From https://docs.saltstack.com/en/latest/: Salt is a core component of Security Onion 2 as it manages all processes on all nodes. If you want to apply the threshold to a single node, place the pillar in /opt/so/saltstack/local/pillar/minions/.sls. Also ensure you run rule-update on the machine. Some node types get their IP assigned to multiple host groups. Salt is a core component of Security Onion 2 as it manages all processes on all nodes. Security Onion is a intrusion detection and network monitoring tool. However, generating custom traffic to test the alert can sometimes be a challenge. Have you tried something like this, in case you are not getting traffic to $HOME_NET? Boot the ISO and run through the installer. Naming convention: The collection of server processes has a server name separate from the hostname of the box. This will add the IPs to the host group in, Since we reused the syslog port group that is already defined, we dont need to create a new port group. Salt sls files are in YAML format. Here, we will show you how to add the local rule and then use the python library scapy to trigger the alert. You signed in with another tab or window. In 2008, Doug Burks started working on Security Onion, a Linux distribution for intrusion detection, network security monitoring, and log management. However, generating custom traffic to test the alert can sometimes be a challenge. In order to apply the threshold to all nodes, place the pillar in /opt/so/saltstack/local/pillar/global.sls. Now that the configuration is in place, you can either wait for the sensor to sync with Salt running on the manager, or you can force it to update its firewall by running the following from the manager: Add the required ports to the port group. Started by Doug Burks, and first released in 2009, Security Onion has. How are they stored? For example, if you had a web server you could include 80 and 443 tcp into an alias or in this case a port group. If . The error can be ignored as it is not an indication of any issue with the minions. If you want to tune Wazuh HIDS alerts, please see the Wazuh section. After adding your rules, update the configuration by running so-strelka-restart on all nodes running Strelka. You may see the following error in the salt-master log located at /opt/so/log/salt/master: The root cause of this error is a state trying to run on a minion when another state is already running. We can start by listing any currently disabled rules: Once that completes, we can then verify that 2100498 is now disabled with so-rule disabled list: Finally, we can check that 2100498 is commented out in /opt/so/rules/nids/all.rules: If you cant run so-rule, then you can modify configuration manually. If you need to manually update your rules, you can run the following on your manager node: If you have a distributed deployment and you update the rules on your manager node, then those rules will automatically replicate from the manager node to your sensors within 15 minutes. Between Zeek logs, alert data from Suricata, and full packet capture from Stenographer, you have enough information to begin identifying areas of interest and making positive changes to your security stance. Start by creating Berkeley Packet Filters (BPFs) to ignore any traffic that you don't want your network sensors to process. Security Onion is an open source suite of network security monitoring (NSM) tools for evaluating alerts, providing three core functions to the cybersecurity analyst: Full packet capture and data types Network-based and host-based intrusion detection systems Alert analysis tools Open /etc/nsm/rules/local.rules using your favorite text editor. sigs.securityonion.net (Signature files for Security Onion containers) ghcr.io (Container downloads) rules.emergingthreatspro.com (Emerging Threats IDS rules) rules.emergingthreats.net (Emerging Threats IDS open rules) www.snort.org (Paid Snort Talos ruleset) github.com (Strelka and Sigma rules updates) Here, we will show you how to add the local rule and then use the python library scapy to trigger the alert. to security-onion > > My rules is as follows: > > alert icmp any any -> (msg:"ICMP Testing"; sid:1000001; rev:1:) the rule is missing a little syntax, maybe try: alert icmp any any ->. > > > > > > > > Cheers, Andi > > > > > > > > > > -- Mit besten Gren Shane Castle > > > > -- > Mit besten Gren > Shane Castle > > -- > You received this message because you are subscribed to a topic in the > Google Groups "security-onion" group.

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