security onion local rulessecurity onion local rules

Hi @Trash-P4nda , I've just updated the documentation to be clearer. Managing Alerts Security Onion 2.3 documentation It is now read-only. Local pillar file: This is the pillar file under /opt/so/saltstack/local/pillar/. We can start by listing any rules that are currently modified: Lets first check the syntax for the add option: Now that we understand the syntax, lets add our modification: Once the command completes, we can verify that our modification has been added: Finally, we can check the modified rule in /opt/so/rules/nids/all.rules: To include an escaped $ character in the regex pattern youll need to make sure its properly escaped. Ingest. Start creating a file for your rule. Revision 39f7be52. 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. This will add the host group to, Add the desired IPs to the host group. How are they parsed? 3. If we want to allow a host or group of hosts to send syslog to a sensor, then we can do the following: In this example, we will be extending the default nginx port group to include port 8086 for a standalone node. 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: [email protected], https://groups.google.com/group/security-onion. At the end of this example IPs in the analyst host group, will be able to connect to 80, 443 and 8086 on our standalone node. Rules Security-Onion-Solutions/security-onion Wiki GitHub It incorporates NetworkMiner, CyberChef, Squert, Sguil, Wazuh, Bro, Suricata, Snort, Kibana, Logstash, Elasticsearch, and numerous other security onion tools. Cleaning up local_rules.xml backup files older than 30 days. For example: By default, if you use so-allow to add a host to the syslog hostgroup, that host will only be allowed to connect to the manager node. 7.2. Adding Your Own Rules Suricata 6.0.0 documentation - Read the Docs The easiest way to test that our NIDS is working as expected might be to simply access http://testmynids.org/uid/index.html from a machine that is being monitored by Security Onion. If you dont want to wait for these automatic processes, you can run them manually from the manager (replacing $SENSORNAME_$ROLE as necessary): Lets add a simple rule to /opt/so/saltstack/local/salt/idstools/local.rules thats really just a copy of the traditional id check returned root rule: Restart Suricata (replacing $SENSORNAME_$ROLE as necessary): If you built the rule correctly, then Suricata should be back up and running. 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) If you would like to pull in NIDS rules from a MISP instance, please see: The firewall state is designed with the idea of creating port groups and host groups, each with their own alias or name, and associating the two in order to create an allow rule. When configuring network firewalls for distributed deployments, youll want to ensure that nodes can connect as shown below. This repository has been archived by the owner on Apr 16, 2021. Let's add a simple rule that will alert on the detection of a string in a tcp session. These non-manager nodes are referred to as salt minions. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. The server is also responsible for ruleset management. local.rules not working I went ahead and put in the below rules under /etc/nsm/local.rules and ran the rule-update command. Do you see these alerts in Squert or ELSA? If you do not see this alert, try checking to see if the rule is enabled in /opt/so/rules/nids/all.rules: Rulesets come with a large number of rules enabled (over 20,000 by default). All node types are added to the minion host group to allow Salt communication. For a Security Onion client, you should dedicate at least 2GB RAM, but ideally 4GB if possible. FAQ Security-Onion-Solutions/security-onion Wiki GitHub Security Onion is a platform that allows you to monitor your network for security alerts. Reboot into your new Security Onion installation and login using the username/password you specified in the previous step. ET Open optimized for Suricata, but available for Snort as well free For more information, see: https://rules.emergingthreats.net/open/ ET Pro (Proofpoint) optimized for Suricata, but available for Snort as well rules retrievable as released Open /etc/nsm/rules/local.rules using your favorite text editor. You received this message because you are subscribed to the Google Groups "security-onion" group. When setup is run on a new node, it will SSH to the manager using the soremote account and add itself to the appropriate host groups. If you pivot from that alert to the corresponding pcap you can verify the payload we sent. Security Onion is a free and open source platform for threat hunting, network security monitoring, and log management. Start by creating Berkeley Packet Filters (BPFs) to ignore any traffic that you don't want your network sensors to process. Now we have to build the association between the host group and the syslog port group and assign that to our sensor node. Assuming you have Internet access, Security Onion will automatically update your NIDS rules on a daily basis. All alerts are viewable in Alerts, Dashboards, Hunt, and Kibana. 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). Security Onion includes best-of-breed free and open tools including Suricata, Zeek, Wazuh, the Elastic Stack and many others. Youll need to ensure the first of the two properly escapes any characters that would be interpreted by regex. Logs Security Onion 2.3 documentation ELSA? Host groups and port groups can be created or modified from the manager node using either so-allow, so-firewall or manually editing the yaml files. But after I run the rule-update command, no alert is generated in Sguil based on that rule.It was working when I first installed Security Onion. Security Onion a free and open platform for intrusion detection, enterprise security monitoring, and log management. idstools may seem like it is ignoring your disabled rules request if you try to disable a rule that has flowbits set. Data collection Examination There isnt much in here other than anywhere, dockernet, localhost and self. . This error now occurs in the log due to a change in the exception handling within Salts event module. Previously, in the case of an exception, the code would just pass. The territories controlled by the ROC consist of 168 islands, with a combined area of 36,193 square . When editing these files, please be very careful to respect YAML syntax, especially whitespace. After viewing your redacted sostat it seems that the ICMP and UDP rules are triggering: Are you using SO with in a VM? Copyright 2023 Firewall Requirements Salt minions must be able to connect to the manager node on ports 4505/tcp and 4506/tcp: jq; so-allow; so-elastic-auth; so . Set anywhere from 5 to 12 in the local_rules Kevin. . For some alerts, your understanding of your own network and the business being transacted across it will be the deciding factor. Launch your Ubuntu Server VM, log on with credentials provided at the beginning of this guide and open a terminal shell by double-clicking the Desktop shortcut. Backups; Docker; DNS Anomaly Detection; Endgame; ICMP Anomaly Detection; Jupyter Notebook; Machine Learning; Adding a new disk; PCAPs for Testing; Removing a Node; Syslog Output; UTC and Time Zones; Utilities. Check your syslog-ng configuration for the name of the local log source ("src" is used on SUSE systems). If you dont want to wait 15 minutes, you can force the sensors to update immediately by running the following command on your manager node: Security Onion offers the following choices for rulesets to be used by Suricata. Age Regression SuppliesWelcome Welcome to Gabby's Little Store! This is You may want to bump the SID into the 90,000,000 range and set the revision to 1. According to NIST, which step in the digital forensics process involves drawing conclusions from data? AddingLocalRules Security-Onion-Solutions/security-onion Wiki /opt/so/saltstack/default/salt/firewall/assigned_hostgroups.map.yaml is where the default allow rules come together and pair hostgroups and portgroups and assign that pairing to a node based on its role in the grid. /opt/so/saltstack/default/salt/firewall/portgroups.yaml, /opt/so/saltstack/default/salt/firewall/hostgroups.yaml, /opt/so/saltstack/default/salt/firewall/assigned_hostgroups.map.yaml, /opt/so/saltstack/local/salt/firewall/portgroups.local.yaml, /opt/so/saltstack/local/salt/firewall/hostgroups.local.yaml, /opt/so/saltstack/local/salt/firewall/assigned_hostgroups.local.map.yaml, /opt/so/saltstack/local/pillar/minions/_.sls, Allow hosts to send syslog to a sensor node, raw.githubusercontent.com (Security Onion public key), sigs.securityonion.net (Signature files for Security Onion containers), rules.emergingthreatspro.com (Emerging Threats IDS rules), rules.emergingthreats.net (Emerging Threats IDS open rules), github.com (Strelka and Sigma rules updates), geoip.elastic.co (GeoIP updates for Elasticsearch), storage.googleapis.com (GeoIP updates for Elasticsearch), download.docker.com (Docker packages - Ubuntu only), repo.saltstack.com (Salt packages - Ubuntu only), packages.wazuh.com (Wazuh packages - Ubuntu only), 3142 (Apt-cacher-ng) (if manager proxy enabled, this is repocache.securityonion.net as mentioned above), Create a new host group that will contain the IPs of the hosts that you want to allow to connect to the sensor. /opt/so/saltstack/default/salt/firewall/hostgroups.yaml is where the default hostgroups are defined. Was this translation helpful? Tried as per your syntax, but still issue persists. so-rule allows you to disable, enable, or modify NIDS rules. As you can see I have the Security Onion machine connected within the internal network to a hub. If so, then tune the number of AF-PACKET workers for sniffing processes. The durian (/ d r i n /, / dj r i n /) is the edible fruit of several tree species belonging to the genus Durio.There are 30 recognised Durio species, at least nine of which produce edible fruit. The error can be ignored as it is not an indication of any issue with the minions. Security Onion offers the following choices for rulesets to be used by Suricata. and dont forget that the end is a semicolon and not a colon. When configuring network firewalls for Internet-connected deployments (non-Airgap), youll want to ensure that the deployment can connect outbound to the following: In the case of a distributed deployment, you can configure your nodes to pull everything from the manager so that only the manager requires Internet access. > > => I do not know how to do your guilde line. How to create and monitor your Snort's rules in Security Onion? Another consideration is whether or not the traffic is being generated by a misconfigured piece of equipment. A new version of our securityonion-rule-update package is now available that distributes OSSEC's local_rules.xml from master server to slave sensors by default and also allows for NIDS/HIDS rule tuning per physical sensor. Syslog-ng and Security Onion /opt/so/saltstack/local/pillar/minions/, https://www.proofpoint.com/us/threat-insight/et-pro-ruleset, https://www.snort.org/downloads/#rule-downloads, https://www.snort.org/faq/what-are-community-rules, https://snort.org/documents/registered-vs-subscriber, license fee per sensor (users are responsible for purchasing enough licenses for their entire deployment), Snort SO (Shared Object) rules only work with Snort not, same rules as Snort Subscriber ruleset, except rules only retrievable after 30 days past release, not officially managed/supported by Security Onion. "; 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). Security Onion Peel Back the Layers of Your Enterprise Monday, January 26, 2009 Integrating Snort 3.0 (SnortSP) and Sguil in 3 Steps So once you have Snort 3.0 installed, what can you do with it? One thing you can do with it (and the one that most people are interested in) is to configure it for IDS mode. /opt/so/saltstack/default/salt/firewall/portgroups.yaml is where the default port groups are defined. Our instructors are the only Security Onion Certified Instructors in the world and our course material is the only authorized training material for Security Onion. Run rule-update (this will merge local.rules into downloaded.rules, update. Use one of the following examples in your console/terminal window: sudo nano local.rules sudo vim local.rules. Escalate local privileges to root level. 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: These policy types can be found in /etc/nsm/rules/downloaded.rules. Security Onion offers the following choices for rulesets to be used by Snort/Suricata: ET Open optimized for Suricata, but available for Snort as well free For more information, see: https://rules.emergingthreats.net/open/ ET Pro (Proofpoint) optimized for Suricata, but available for Snort as well rules retrievable as released Tuning Security Onion 2.3 documentation Security Onion has Snort built in and therefore runs in the same instance. It . 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. In order to apply the threshold to all nodes, place the pillar in /opt/so/saltstack/local/pillar/global.sls. Boot the ISO and run through the installer. to security-onion yes it is set to 5, I have also played with the alert levels in the rules to see if the number was changing anything. Salt can be used for data-driven orchestration, remote execution for any infrastructure, configuration management for any app stack, and much more. If you would like to pull in NIDS rules from a MISP instance, please see the MISP Rules section. Revision 39f7be52. The second only needs the $ character escaped to prevent bash from treating that as a variable. However, generating custom traffic to test the alert can sometimes be a challenge. Alternatively, run salt -G 'role:so-sensor' cmd.run "so-strelka-restart" to restart Strelka on all sensors at once. 41 - Network Segmentation, VLANs, and Subnets. Full Name. Can anyone tell me > > > > what I've done wrong please? From the Command Line. Try checking /var/log/nsm/hostname-interface/snortu-1.log for clues and please post the exact rule syntax you are attempting to use. /opt/so/saltstack/local/salt/firewall/portgroups.local.yaml defines custom port groups. MISP Rules. Security Onion: A Linux Distro For IDS, NSM, And Log Management | Unixmen 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. Apply the firewall state to the node, or wait for the highstate to run for the changes to happen automatically. 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. Started by Doug Burks, and first released in 2009, Security Onion has. Copyright 2023 Then tune your IDS rulesets. Salt sls files are in YAML format. 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,. to security-onion When I run 'rule-update' it give an error that there are no rules in /usr/local/lib/snort_dynamicrules. A tag already exists with the provided branch name. Where is it that you cannot view them? All the following will need to be run from the manager. 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. Adding local rules in Security Onion is a rather straightforward process. We offer both training and support for Security Onion. Any definitions made here will override anything defined in other pillar files, including global. Security Onion generates a lot of valuable information for you the second you plug it into a TAP or SPAN port. 'Re: [security-onion] Rule still triggering even after modifying to Port groups are a way of grouping together ports similar to a firewall port/service alias. GitHub - security-onion-solutions/security-onion/wiki Manager of Support and Professional Services. Nodes will be configured to pull from repocache.securityonion.net but this URL does not actually exist on the Internet, it is just a special address for the manager proxy. 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). To generate traffic we are going to use the python library scapy to craft packets with specific information to ensure we trigger the alert with the information we want. Within 15 minutes, Salt should then copy those rules into /opt/so/rules/nids/local.rules. Tuning NIDS Rules in Security Onion - YouTube 0:00 / 15:12 Tuning NIDS Rules in Security Onion 1,511 views Jan 10, 2022 This video shows you how to tune Suricata NIDS rules in. Convert PSI to MPA | Chapel Steel Convert psi to - francescolangella.it Run so-rule without any options to see the help output: We can use so-rule to modify an existing NIDS rule. Our products include both the Security Onion software and specialized hardware appliances that are built and tested to run Security Onion. c96 extractor. That's what we'll discuss in this section. For a quick primer on flowbits, see https://blog.snort.org/2011/05/resolving-flowbit-dependancies.html. Security Onion Lab Setup with VirtualBox | Free Video Tutorial - Udemy To unsubscribe from this group and stop receiving emails from it, send an email to. In 2008, Doug Burks started working on Security Onion, a Linux distribution for intrusion detection, network security monitoring, and log management. Then tune your IDS rulesets. Global pillar file: This is the pillar file that can be used to make global pillar assignments to the nodes. Integrated into the Security Onion, OSSEC is a host-based intrusion detection system (HIDS) that can conduct file integrity monitoring, local log monitoring, system process monitoring, and rootkit detection. The signature id (SID) must be unique. Revision 39f7be52. 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 ->. https://securityonion.net/docs/AddingLocalRules. The county seat is in Evansville. A Campus Card is your University of Reading student/staff/associate To add local YARA rules, create a directory in /opt/so/saltstack/local/salt/strelka/rules, for example localrules. Backing up current downloaded.rules file before it gets overwritten. This first sub-section will discuss network firewalls outside of Security Onion. You can then run curl http://testmynids.org/uid/index.html on the node to generate traffic which should cause this rule to alert (and the original rule that it was copied from, if it is enabled). Custom rules can be added to the local.rules file Rule threshold entries can . In many of the use cases below, we are providing the ability to modify a configuration file by editing either the global or minion pillar file. Open /etc/nsm/rules/local.rules using your favorite text editor. There are many ways to achieve age regression, but the three primary methods are: Botox. Though each engine uses its own severity level system, Security Onion converts that to a standardized alert severity: event.severity: 4 ==> event.severity_label: critical, event.severity: 3 ==> event.severity_label: high, event.severity: 2 ==> event.severity_label: medium, event.severity: 1 ==> event.severity_label: low. Also ensure you run rule-update on the machine. 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 Answered by weslambert on Dec 15, 2021. Files here should not be modified as changes would be lost during a code update. You signed in with another tab or window. There may be entire categories of rules that you want to disable first and then look at the remaining enabled rules to see if there are individual rules that can be disabled. Finally, run so-strelka-restart to allow Strelka to pull in the new rules. It is located at /opt/so/saltstack/local/pillar/global.sls. Within 15 minutes, Salt should then copy those rules into /opt/so/rules/nids/local.rules. When you run so-allow or so-firewall, it modifies this file to include the IP provided in the proper hostgroup. we run SO in a distributed deployment and the manager doesn't run strelka but does run on the sensor, the paths however (/opt/so/saltstack/local/salt/strelka/rules) exist on the manger but not the sensor, I did find the default repo under opt/so/saltstack/default/salt/strelka/rules/ on the manager and I can run so-yara-update but not so-strelka-restart because its not running on the manager so I'm a little confused on where I should be putting the custom YARA rules because things don't line up with the documentation or I'm just getting super confused. This can be done in the minion pillar file if you want the delay for just that minion, or it can be done in the global.sls file if it should be applied to all minions. This is an advanced case and you most likely wont never need to modify these files. If . . 137 vi local.rules 138 sudo vi local.rules 139 vi cd .. 140 cd .. 141 vi securityonion.conf 142 sudo vi pulledpork/pulledpork.conf 143 sudo rule-update 144 history 145 vi rules/downloaded.rules 146 sudo vi local.rules 147 sudo vi rules/local.rules 160 sudo passwd david 161 sudo visudo 162 sudo vi rules/local.rules If SID 4321 is noisy, you can disable it as follows: From the manager, run the following to update the config: If you want to disable multiple rules at one time, you can use a regular expression, but make sure you enclose the full entry in single quotes like this: We can use so-rule to modify an existing NIDS rule. You can add Wazuh HIDS rules in /opt/so/rules/hids/local_rules.xml. Re: [security-onion] Snort Local rules not getting alerts in ELSA / SQUERT 7.2. Add the following to the minions sls file located at. 2 Persons $40,550. 6 Persons $58,800. 3 Persons $45,600. 7 Persons I've just updated the documentation to be clearer. In Security Onion, locally created rules are stored in /opt/so/rules/nids/local.rules. You could try testing a rule . If you want to tune Wazuh HIDS alerts, please see the Wazuh section. The next run of idstools should then merge /opt/so/rules/nids/local.rules into /opt/so/rules/nids/all.rules which is what Suricata reads from. securityonion-docs/local-rules.rst at master Security-Onion-Solutions For example, if you dont care that users are accessing Facebook, then you can silence the policy-based signatures for Facebook access. Copyright 2023 This section will cover both network firewalls outside of Security Onion and the host-based firewall built into Security Onion.
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