Ollama Abnormal Network Connectivity
Last updated 2 days ago on 2026-07-17
About
Detects abnormal network activity and connectivity issues in Ollama including non-localhost API access attempts and warning-level network errors such as DNS lookup failures, TCP connection issues, or host resolution problems that may indicate network-based attacks, unauthorized access attempts, or infrastructure reconnaissance activity.
- Platform
Splunk
- Tags
- Data Source: SplunkDomain: ApplicationRule Type: QueryOS: Any
- Severity
- medium
- Risk Score
- 47
- References
- https://github.com/rosplk/ta-ollama(external, opens in a new tab or window)
- False Positives
- Legitimate remote access from authorized users or applications connecting from non-localhost addresses, temporary network infrastructure issues causing DNS resolution failures, firewall or network configuration changes resulting in connection timeouts, cloud-hosted Ollama instances receiving valid external API requests, or intermittent connectivity problems during network maintenance may trigger this detection during normal operations.
- Source
- View on GitHub(external, opens in a new tab or window)
Definition
- Rule Language
- SPL
- Rule Type
- query
text code block:`ollama_server` level=WARN (msg="*failed*" OR msg="*dial tcp*" OR msg="*lookup*" OR msg="*no such host*" OR msg="*connection*" OR msg="*network*" OR msg="*timeout*" OR msg="*unreachable*" OR msg="*refused*") | eval src=coalesce(src, src_ip, "N/A") | stats count as incidents, values(src) as src, values(msg) as warning_messages, latest(_time) as last_incident BY host | eval last_incident=strftime(last_incident, "%Y-%m-%d %H:%M:%S") | eval severity="medium" | eval attack_type="Abnormal Network Connectivity" | stats count BY last_incident, host, incidents, src, warning_messages, severity, attack_type | `ollama_abnormal_network_connectivity_filter`
View this rule on Splunk
This rule was sourced from the official Splunk public repository. View the original rule on GitHub(external, opens in a new tab or window).