Firewall Requirements Salt minions must be able to connect to the manager node on ports 4505/tcp and 4506/tcp: Revision 39f7be52. Managing firewall rules for all devices should be done from the manager node using either so-allow, so-firewall or, for advanced cases, manually editing the yaml files. If you were to add a search node, you would see its IP appear in both the minion and the search_node host groups. /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. However, generating custom traffic to test the alert can sometimes be a challenge. Introduction Adding local rules in Security Onion is a rather straightforward process. The set of processes includes sguild, mysql, and optionally the Elastic stack (Elasticsearch, Logstash, Kibana) and Curator. These non-manager nodes are referred to as salt minions. 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. Finally, from the manager, update the config on the remote node: You can manage threshold entries for Suricata using Salt pillars. Security Onion Documentation Security Onion 2.3 documentation You can do the reverse unit conversion from MPa to psi, or enter any two units below:LED MSI Optix G242 24 inch IPS Gaming Monitor - Full HD - 144Hz Refresh Rate - 1ms Response time - Adaptive Sync for Esports (9S6-3BA41T-039) LED MSI OPTIX G272 Gaming Monitor 27" FHD IPS 144HZ 1MS Adaptive Sync (9S6-3CB51T-036) LG 27 FHD IPS 1ms 240Hz G . As shown above, we edit the minion pillar and add the SID to the idstools - sids - disabled section. The county seat is in Evansville. Identification. For more information, please see https://docs.saltproject.io/en/latest/topics/troubleshooting/yaml_idiosyncrasies.html. Tuning NIDS Rules in Security Onion - YouTube /opt/so/saltstack/local/salt/idstools/local.rules, "GPL ATTACK_RESPONSE id check returned root 2", /opt/so/saltstack/local/salt/strelka/rules, /opt/so/saltstack/local/salt/strelka/rules/localrules, /opt/so/saltstack/local/salt/strelka/rules/, https://github.com/Neo23x0/signature-base. Revision 39f7be52. Answered by weslambert on Dec 15, 2021. Home About Us Bill Pay 877-213-8180 Product Library My accountItems of interest (0) Get your campus card Your campus card allows you to borrow books from the Library, use services at the student centre, make payments at Macquarie University retail outlets, and identify yourself during class tests and . Security Onion is an open-source and free Linux distribution for log management, enterprise security monitoring, and intrusion detection. > To unsubscribe from this topic . 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: Craft the layer 2 information. Security Onion | InsightIDR Documentation - Rapid7 Pillars are a Saltstack concept, formatted typically in YAML, that can be used to parameterize states via templating. Custom local.rules not showing up in kibana NIDS page #1712 - GitHub After viewing your redacted sostat it seems that the ICMP and UDP rules are triggering: Are you using SO with in a VM? Modifying these values outside of so-allow or so-firewall could lead to problems accessing your existing hosts. Beta In order to apply the threshold to all nodes, place the pillar in /opt/so/saltstack/local/pillar/global.sls. If you need to increase this delay, it can be done using the salt:minion:service_start_delay pillar. 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 Security Onion 2.3 documentation To enable or disable SIDs for Suricata, the Salt idstools pillar can be used in the minion pillar file (/opt/so/saltstack/local/pillar/minions/_.sls). Snort local rules not updated - Google Groups and dont forget that the end is a semicolon and not a colon. For example, the following threshold IP exceeds the 64-character limit: This results in the following error in the Suricata log: The solution is to break the ip field into multiple entries like this: A suppression rule allows you to make some finer grained decisions about certain rules without the onus of rewriting them. If you would like to create a rule yourself and use it with Suricata, this guide might be helpful. 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. 41 - Network Segmentation, VLANs, and Subnets. I have 3 simple use cases (1) Detect FTP Connection to our public server 129.x.x.x (2) Detect SSH Connection attempts (3) Detect NMAP scan. More information on each of these topics can be found in this section. 5. You signed in with another tab or window. If you cant run so-rule, you can modify the configuration manually in the manager pillar file at /opt/so/saltstack/local/pillar/minions/_.sls (where is manager, managersearch, standalone, or eval depending on the manager type that was chosen during install). I went ahead and put in the below rules under /etc/nsm/local.rules and ran the rule-update command. There are many ways to achieve age regression, but the three primary methods are: Botox. However, generating custom traffic to test the alert can sometimes be a challenge. Custom rules can be added to the local.rules file Rule threshold entries can . To configure syslog for Security Onion: Stop the Security Onion service. The server is also responsible for ruleset management. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Introduction to Sguil and Squert: Part 1 - Security Onion Durian - Wikipedia You received this message because you are subscribed to the Google Groups "security-onion" group. /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. (Alternatively, you can press Ctrl+Alt+T to open a new shell.) Generate some traffic to trigger the alert. The error can be ignored as it is not an indication of any issue with the minions. 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. Convert PSI to MPA | Chapel Steel Convert psi to - francescolangella.it All node types are added to the minion host group to allow Salt communication. 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. You need to configure Security Onion to send syslog so that InsightIDR can ingest it. 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 the rule is missing a little syntax, maybe try: alert icmp any any -> $HOME_NET any (msg:"ICMP Testing"; sid:1000001; rev:1;). 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. Once logs are generated by network sniffing processes or endpoints, where do they go? 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. To unsubscribe from this group and stop receiving emails from it, send an email to security-onio.@googlegroups.com. Security Onion Solutions, LLC is the creator and maintainer of Security Onion, a free and open platform for threat hunting, network security monitoring, and log management. FAQ Security-Onion-Solutions/security-onion Wiki GitHub Let's add a simple rule that will alert on the detection of a string in a tcp session. Cleaning up local_rules.xml backup files older than 30 days. ManagingAlerts Security-Onion-Solutions/security-onion Wiki - GitHub Logs . Backing up current downloaded.rules file before it gets overwritten. Our appliances will save you and your team time and resources, allowing you to focus on keeping your organization secure. In this file, the idstools section has a modify sub-section where you can add your modifications. Security Onion Lab Setup with VirtualBox | Free Video Tutorial - Udemy Any pointers would be appreciated. 2 Persons $40,550. 6 Persons $58,800. 3 Persons $45,600. 7 Persons In Security Onion, locally created rules are stored in /opt/so/rules/nids/local.rules. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. How to exclude IP After enabling all default Snort Rules - Google Groups Backing up current local_rules.xml file. This was implemented to avoid some issues that we have seen regarding Salt states that used the ip_interfaces grain to grab the management interface IP. Revision 39f7be52. You may want to bump the SID into the 90,000,000 range and set the revision to 1. When you purchase products and services from us, you're helping to fund development of Security Onion! If you try to disable the first two rules without disabling the third rule (which has flowbits:isset,ET.MSSQL) the third rule could never fire due to one of the first two rules needing to fire first. Re: [security-onion] Snort Local rules not getting alerts in ELSA / SQUERT If you would like to pull in NIDS rules from a MISP instance, please see the MISP Rules section. Files here should not be modified as changes would be lost during a code update. If there are a large number of uncategorized events in the securityonion_db database, sguil can have a hard time of managing the vast amount of data it needs to process to present a comprehensive overview of the alerts. 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 In 2008, Doug Burks started working on Security Onion, a Linux distribution for intrusion detection, network security monitoring, and log management. This writeup contains a listing of important Security Onion files and directories. 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. Write your rule, see Rules Format and save it. Copyright 2023 Age Regression SuppliesWelcome Welcome to Gabby's Little Store! This is This error now occurs in the log due to a change in the exception handling within Salts event module. OSSEC custom rules not generating alerts - Google Groups 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. . Security Onion includes best-of-breed free and open tools including Suricata, Zeek, Wazuh, the Elastic Stack and many others. Also ensure you run rule-update on the machine. 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. Any line beginning with "#" can be ignored as it is a comment. Diagnostic logs can be found in /opt/so/log/salt/. This directory stores the firewall rules specific to your grid. Salt sls files are in YAML format. If it is, then the most expedient measure may be to resolve the misconfiguration and then reinvestigate tuning. Adding Local Rules Security Onion 2.3 documentation Are you sure you want to create this branch? This section will cover both network firewalls outside of Security Onion and the host-based firewall built into Security Onion. These non-manager nodes are referred to as salt minions. Important "Security Onion" Files and Directories - Medium 'Re: [security-onion] Rule still triggering even after modifying to 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. 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. Copyright 2023 Once your rules and alerts are under control, then check to see if you have packet loss. If so, then tune the number of AF-PACKET workers for sniffing processes. Give feedback. Please note! 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). Boot the ISO and run through the installer. Before You Begin. This is an advanced case and you most likely wont never need to modify these files. For example, if you include a bad custom snort rule with incorrect syntax, the snort engine will fail . 4. Local pillar file: This is the pillar file under /opt/so/saltstack/local/pillar/. Copyright 2023 This will add the host group to, Add the desired IPs to the host group. All the following will need to be run from the manager. There are two directories that contain the yaml files for the firewall configuration. Security Onion. /opt/so/saltstack/default/salt/firewall/hostgroups.yaml is where the default hostgroups are defined. ELSA? One thing you can do with it (and the one that most people are interested in) is to configure it for IDS mode. Hi @Trash-P4nda , I've just updated the documentation to be clearer. Within 15 minutes, Salt should then copy those rules into /opt/so/rules/nids/local.rules. Data collection Examination There are multiple ways to handle overly productive signatures and well try to cover as many as we can without producing a full novel on the subject. If . Full Name. Security Onion Set Up Part 3: Configuration of Version 14.04 Any definitions made here will override anything defined in other pillar files, including global. Please update your bookmarks. You can read more about this at https://redmine.openinfosecfoundation.org/issues/4377. I've just updated the documentation to be clearer. Security Onion generates a lot of valuable information for you the second you plug it into a TAP or SPAN port. Default pillar file: This is the pillar file located under /opt/so/saltstack/default/pillar/. A tag already exists with the provided branch name. First off, I'll briefly explain security onion security Onion is the leading open source operating system for network security monitoring, intrusion detection, log management and threat hunting. https://securityonion.net/docs/AddingLocalRules. Security onion troubleshooting - silvestermallorca.de If you right click on the, You can learn more about snort and writing snort signatures from the. In a distributed deployment, the manager node controls all other nodes via salt. Revision 39f7be52. /opt/so/saltstack/local/salt/firewall/hostgroups.local.yaml is where many default named hostgroups get populated with IPs that are specific to your environment. Tuning Security Onion 2.3 documentation The ip addresses can be random, but I would suggest sticking to RFC1918: Craft the layer 3 information Since we specified port 7789 in our snort rule: Use the / operator to compose our packet and transfer it with the send() method: Check Sguil/Squert/Kibana for the corresponding alert. Alternatively, run salt -G 'role:so-sensor' cmd.run "so-strelka-restart" to restart Strelka on all sensors at once. 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. 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. 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. For a Security Onion client, you should dedicate at least 2GB RAM, but ideally 4GB if possible. Security Onion Solutions, LLC is the creator and maintainer of Security Onion, a free and open platform for threat hunting, network security monitoring, and log management. Please note if you are using a ruleset that enables an IPS policy in /etc/nsm/pulledpork/pulledpork.conf, your local rules will be disabled. Can anyone tell me > > > > what I've done wrong please? 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. MISP Rules. 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. lawson cedars. Set anywhere from 5 to 12 in the local_rules Kevin. These policy types can be found in /etc/nsm/rules/downloaded.rules. To verify the Snort version, type in snort -Vand hit Enter. Alternatively, run salt -G 'role:so-sensor' cmd.run "so-strelka-restart" to restart Strelka on all sensors at once. Security Onion Solutions No rules in /usr/local/lib/snort_dynamicrules - Google Groups 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.
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