The format of the pillar file can be seen below, as well as in /opt/so/saltstack/default/pillar/thresholding/pillar.usage and /opt/so/saltstack/default/pillar/thresholding/pillar.example. 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. Copyright 2023 Are you sure you want to create this branch? 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. For more information, please see https://docs.saltproject.io/en/latest/topics/troubleshooting/yaml_idiosyncrasies.html. Inside of /opt/so/saltstack/local/salt/strelka/rules/localrules, add your YARA rules. Long-term you should only run the rules necessary for > your environment. and dont forget that the end is a semicolon and not a colon. 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. I went ahead and put in the below rules under /etc/nsm/local.rules and ran the rule-update command. 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 Start creating a file for your rule. Salt can be used for data-driven orchestration, remote execution for any infrastructure, configuration management for any app stack, and much more. Check out our NIDS tuning video at https://youtu.be/1jEkFIEUCuI! . Default pillar file: This is the pillar file located under /opt/so/saltstack/default/pillar/. 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). Once your rules and alerts are under control, then check to see if you have packet loss. Our products include both the Security Onion software and specialized hardware appliances that are built and tested to run Security Onion. You need to configure Security Onion to send syslog so that InsightIDR can ingest it. 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. You are an adult, at least 18 years of age, you are familiar with and understand the standards and laws of your local community regarding sexually-oriented media. FAQ Security-Onion-Solutions/security-onion Wiki GitHub When editing these files, please be very careful to respect YAML syntax, especially whitespace. 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) Convert PSI to MPA | Chapel Steel Convert psi to - francescolangella.it To enable the Talos Subscriber ruleset in an already installed grid, modify the /opt/so/saltstack/local/pillar/minions/ file as follows: To add other remotely-accessible rulesets, add an entry under urls for the ruleset URL in /opt/so/saltstack/local/pillar/minions/: Copyright 2023 When you purchase products and services from us, you're helping to fund development of Security Onion! CCNA Cyber Ops (Version 1.1) - Chapter 12 Exam Answers Full This directory contains the default firewall rules. It incorporates NetworkMiner, CyberChef, Squert, Sguil, Wazuh, Bro, Suricata, Snort, Kibana, Logstash, Elasticsearch, and numerous other security onion tools. No rules in /usr/local/lib/snort_dynamicrules - Google Groups to security-onion When I run 'rule-update' it give an error that there are no rules in /usr/local/lib/snort_dynamicrules. https://securityonion.net/docs/AddingLocalRules. . This directory stores the firewall rules specific to your grid. Add the following to the minions sls file located at. To verify the Snort version, type in snort -Vand hit Enter. Revision 39f7be52. Check your syslog-ng configuration for the name of the local log source ("src" is used on SUSE systems). It is located at /opt/so/saltstack/local/pillar/global.sls. Edit the /opt/so/rules/nids/local.rules file using vi or your favorite text editor: sudo vi /opt/so/rules/nids/local.rules Paste the rule. Within 15 minutes, Salt should then copy those rules into /opt/so/rules/nids/local.rules. "; 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). If you are on a large network, you may need to do additional tuning like pinning processes to CPU cores. 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. A tag already exists with the provided branch name. See above for suppress examples. Please provide the output of sostat-redacted, attaching as a plain text file, or by using a service like Pastebin.com. Salt Security Onion 2.3 documentation Durian - Wikipedia Security Onion generates a lot of valuable information for you the second you plug it into a TAP or SPAN port. A node that has a port group and host group association assigned to it will allow those hosts to connect to those ports on that node. . Our documentation has moved to https://securityonion.net/docs/. MISP Rules. Give feedback. local.rules not working Revision 39f7be52. There isnt much in here other than anywhere, dockernet, localhost and self. If you want to apply the threshold to a single node, place the pillar in /opt/so/saltstack/local/pillar/minions/.sls. idstools helpfully resolves all of your flowbit dependencies, and in this case, is re-enabling that rule for you on the fly. Let's add a simple rule that will alert on the detection of a string in a tcp session. In a distributed deployment, the manager node controls all other nodes via salt. For example: In some cases, you may not want to use the modify option above, but instead create a copy of the rule and disable the original. And when I check, there are no rules there. For example, suppose we want to disable SID 2100498. Saltstack states are used to ensure the state of objects on a minion. 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. 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. When configuring network firewalls for distributed deployments, youll want to ensure that nodes can connect as shown below. Age Regression SuppliesWelcome Welcome to Gabby's Little Store! This is Managing Alerts Security Onion 2.3 documentation Managing Rules; Adding Local Rules; Managing Alerts; High Performance Tuning; Tricks and Tips. Adding Local Rules Security Onion 2.3 documentation Docs Tuning Adding Local Rules Edit on GitHub Adding Local Rules NIDS You can add NIDS rules in /opt/so/saltstack/local/salt/idstools/local.rules on your manager. Security Onion a free and open platform for intrusion detection, enterprise security monitoring, and log management. The default allow rules for each node are defined by its role (manager, searchnode, sensor, heavynode, etc) in the grid. Tracking. Security onion troubleshooting - silvestermallorca.de Adding local rules in Security Onion is a rather straightforward process. 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. All node types are added to the minion host group to allow Salt communication. Manager of Support and Professional Services. To enabled them, either revert the policy by remarking the ips_policy line (and run rule-update), or add the policy type to the rules in local.rules. Copyright 2023 If you pivot from that alert to the corresponding pcap you can verify the payload we sent. 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. Any pointers would be appreciated. Managing Rules Security Onion 2.3 documentation On Thursday, June 15, 2017 at 5:06:51 PM UTC+5:30, Wes wrote: Is it simply not triggering, or causing an error? In the configuration window, select the relevant form of Syslog - here, it's Syslog JSON - and click. Modifying these values outside of so-allow or so-firewall could lead to problems accessing your existing hosts. If it is, then the most expedient measure may be to resolve the misconfiguration and then reinvestigate tuning. Copyright 2023 Generate some traffic to trigger the alert. > > > > > > > > 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. Some of these refer to areas where data is stored, while others point to configuration files that can be modified to change how Security Onion interacts with various tools. You could try testing a rule . One of those regular interventions is to ensure that you are tuning properly and proactively attempting to reach an acceptable level of signal to noise. Security Onion Set Up Part 3: Configuration of Version 14.04 Local pillar file: This is the pillar file under /opt/so/saltstack/local/pillar/. Tuning Security Onion 2.3 documentation IPS Policy The second only needs the $ character escaped to prevent bash from treating that as a variable. /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. Have you tried something like this, in case you are not getting traffic to $HOME_NET? It is now read-only. That's what we'll discuss in this section. Assuming you have Internet access, Security Onion will automatically update your NIDS rules on a daily basis. Interested in discussing how our products and services can help your organization? Please review the Salt section to understand pillars and templates. With this functionality we can suppress rules based on their signature, the source or destination address and even the IP or full CIDR network block. Download Security Onion 20110116. 2 Persons $40,550. 6 Persons $58,800. 3 Persons $45,600. 7 Persons Use one of the following examples in your console/terminal window: sudo nano local.rules sudo vim local.rules.
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