security onion local rules security onion local rules

1. /opt/so/saltstack/local/salt/firewall/portgroups.local.yaml defines custom port groups. 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. > > > > > > > > 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. Backing up current downloaded.rules file before it gets overwritten. Any pointers would be appreciated. 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. Diagnostic logs can be found in /opt/so/log/salt/. so-rule allows you to disable, enable, or modify NIDS rules. 7.2. to security-onion When I run 'rule-update' it give an error that there are no rules in /usr/local/lib/snort_dynamicrules. 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. 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. Security Onion is a free and open source platform for threat hunting, network security monitoring, and log management. MISP Rules. Where is it that you cannot view them? 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. 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. 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. This repository has been archived by the owner on Apr 16, 2021. Youll need to ensure the first of the two properly escapes any characters that would be interpreted by regex. Revision 39f7be52. For example, suppose we want to disable SID 2100498. Security Deposit Reliable Up to $5,000 Payments Higher rents as supported by comparable rents Higher Voucher Payment Standards (VPS) 10/1/2021 Signing Bonus 1 - Bedroom = $893 to $1,064 2 - Bedroom = $1,017 to $1,216 3 - Bedroom = $1,283 to $1,530 4 - Bedroom = $1,568 to $1,872 5 - Bedroom = $1,804 to $2,153 6 - Bedroom = $2,038 to . 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. And when I check, there are no rules there. Run rule-update (this will merge local.rules into downloaded.rules, update. Of course, the target IP address will most likely be different in your environment: destination d_tcp { tcp("192.168.3.136" port(514)); }; log { Adding local rules in Security Onion is a rather straightforward process. These policy types can be found in /etc/nsm/rules/downloaded.rules. Saltstack states are used to ensure the state of objects on a minion. Port groups are a way of grouping together ports similar to a firewall port/service alias. Finally, run so-strelka-restart to allow Strelka to pull in the new rules. 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. (Alternatively, you can press Ctrl+Alt+T to open a new shell.) 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. Backing up current local_rules.xml file. Security Onion Layers Ubuntu based OS Snort, Suricata Snorby Bro Sguil Squert You can use salts test.ping to verify that all your nodes are up: Similarly, you can use salts cmd.run to execute a command on all your nodes at once. epic charting system training Security Onion is a platform that allows you to monitor your network for security alerts. Some node types get their IP assigned to multiple host groups. 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. Also ensure you run rule-update on the machine. You signed in with another tab or window. 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. 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. It is located at /opt/so/saltstack/local/pillar/global.sls. 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. A. This will add the host group to, Add the desired IPs to the host group. Hi @Trash-P4nda , I've just updated the documentation to be clearer. This way, you still have the basic ruleset, but the situations in which they fire are altered. You can add Wazuh HIDS rules in /opt/so/rules/hids/local_rules.xml. 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. 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 created and maintain Security Onion, so we know it better than anybody else. 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. On Thursday, June 15, 2017 at 5:06:51 PM UTC+5:30, Wes wrote: Is it simply not triggering, or causing an error? After adding your rules, update the configuration by running so-strelka-restart on all nodes running Strelka. lawson cedars. Do you see these alerts in Squert or ELSA? For example, if you dont care that users are accessing Facebook, then you can silence the policy-based signatures for Facebook access. Please keep this value below 90 seconds otherwise systemd will reach timeout and terminate the service. 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. 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. 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. 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. IPS Policy Salt is a new approach to infrastructure management built on a dynamic communication bus. Identification. Check out our NIDS tuning video at https://youtu.be/1jEkFIEUCuI! Any line beginning with "#" can be ignored as it is a comment. 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. This is located at /opt/so/saltstack/local/pillar/minions/.sls. In 2008, Doug Burks started working on Security Onion, a Linux distribution for intrusion detection, network security monitoring, and log management. For example: If you need to modify a part of a rule that contains a special character, such as a $ in variable names, the special character needs to be escaped in the search part of the modify string. If you want to apply the threshold to a single node, place the pillar in /opt/so/saltstack/local/pillar/minions/.sls. 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. 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. In syslog-ng, the following configuration forwards all local logs to Security Onion. This directory contains the default firewall rules. Cannot retrieve contributors at this time. /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. For more information about Salt, please see https://docs.saltstack.com/en/latest/. /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. Copyright 2023 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. 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. Generate some traffic to trigger the alert. 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 . To enable the ET Pro ruleset in an already installed grid, modify the /opt/so/saltstack/local/pillar/minions/ file as follows: Since Shared Object rules wont work with Suricata, you may want to disable them using a regex like 're:soid [0-9]+' as described in the Managing Alerts section. However, the exception is now logged. /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. 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).