Skip to main content الرئيسية المنشئون agentflocks flocks implementing-ebpf-security-monitoring
implementing-ebpf-security-monitoring Implements eBPF-based security monitoring using Cilium Tetragon for real-time process execution tracking, network connection observability, file access auditing, and runtime enforcement. Covers TracingPolicy CRD authoring with kprobe/tracepoint hooks, in-kernel filtering via matchArgs/matchBinaries selectors, JSON event export, and integration with SIEM pipelines. Use when building kernel-level runtime security observability for Linux hosts or Kubernetes clusters.
الانتقال إلى التثبيت سوق المهارات اكتشف واستكشف مهارات الذكاء الاصطناعي التي بناها المجتمع.
المهن ذات الصلة SOC
استنادا إلى تصنيف SOC المهني
التثبيت باستخدام Codex أو Claude انسخ هذا Prompt والصقه في Codex أو Claude أو مساعد آخر ليراجع صفحة Skill ويثبّتها لك.
عرض تفاصيل Prompt يتجاوز الأمر المباشر Prompt المخصّص للمراجعة. افحص المصدر قبل تشغيله.
npx skills add https://github.com/AgentFlocks/flocks --skill implementing-ebpf-security-monitoringيبقى الأمر في سطر واحد. مرّر أفقيًا لمراجعته كاملًا قبل النسخ.
تفضّل نسخة محلية؟ نزّل الملفات المتاحة حاليًا لدى SkillsMP.
تحميل Zip جاري التحميل... name implementing-ebpf-security-monitoring description Implements eBPF-based security monitoring using Cilium Tetragon for real-time process execution tracking, network connection observability, file access auditing, and runtime enforcement. Covers TracingPolicy CRD authoring with kprobe/tracepoint hooks, in-kernel filtering via matchArgs/matchBinaries selectors, JSON event export, and integration with SIEM pipelines. Use when building kernel-level runtime security observability for Linux hosts or Kubernetes clusters.
domain cybersecurity subdomain security-operations tags ["implementing","ebpf","security","monitoring","tetragon","cilium","runtime","observability"] version 1.0 author mukul975 license Apache-2.0 nist_ai_rmf ["MEASURE-2.7","MAP-5.1","MANAGE-2.4"] atlas_techniques ["AML.T0070","AML.T0066","AML.T0082"] nist_csf ["DE.CM-01","RS.MA-01","GV.OV-01","DE.AE-02"]
Implementing eBPF Security Monitoring
When to Use
When deploying kernel-level runtime security monitoring on Linux hosts or Kubernetes clusters
When you need sub-millisecond visibility into process execution, network connections, and file access
When traditional userspace monitoring tools introduce unacceptable performance overhead
When building detection pipelines that require in-kernel filtering before events reach userspace
When enforcing runtime security policies (kill process, send signal) at the kernel level
Prerequisites
Linux kernel 5.3+ with BTF (BPF Type Format) support enabled
Kubernetes 1.24+ cluster (for Kubernetes deployment) or standalone Linux host
Helm 3.x installed (for Kubernetes deployment)
kubectl configured with cluster accesstetra CLI installed for local event streamingPython 3.8+ with requests, kubernetes, pyyaml dependencies
Root or CAP_BPF/CAP_SYS_ADMIN capabilities for eBPF program loading
Instructions
1. Install Tetragon on Kubernetes
Deploy Tetragon via Helm to get default process lifecycle observability:
helm repo add cilium https://helm.cilium.io
helm repo update
helm install tetragon cilium/tetragon -n kube-system \
--set tetragon.enableProcessCred=true \
--set tetragon.enableProcessNs=true
Verify the installation:
kubectl get pods -n kube-system -l app.kubernetes.io/name=tetragon
kubectl logs -n kube-system -l app.kubernetes.io/name=tetragon -c export-stdout -f | head -20
2. Install Tetragon on Standalone Linux
For non-Kubernetes Linux hosts, install from the tarball release:
curl -LO https://github.com/cilium/tetragon/releases/latest/download/tetragon-linux-amd64.tar.gz
tar xzf tetragon-linux-amd64.tar.gz
sudo cp tetragon /usr/local/bin/
sudo cp tetra /usr/local/bin/
sudo tetragon --btf /sys/kernel/btf/vmlinux &
tetra getevents -o compact
3. Monitor Process Execution (Default) Tetragon generates process_exec and process_exit events by default without any TracingPolicy:
tetra getevents -o compact
tetra getevents -o json | jq '.process_exec // .process_exit'
Example process_exec JSON event:
{
"process_exec" : {
"process" : {
"binary" : "/usr/bin/curl" ,
"arguments" : "https://malicious.example.com/payload" ,
"cwd" : "/tmp" ,
"uid" : 1000 ,
"pod" : {
"namespace" : "default" ,
"name" : "webapp-7b4d9f8c6-x2k9p"
} ,
"parent" : {
"binary" : "/bin/bash" ,
"pid" : 1234
}
}
}
}
4. Author TracingPolicy for File Access Monitoring Create a TracingPolicy CRD to monitor access to sensitive files via the sys_openat kprobe:
apiVersion: cilium.io/v1alpha1
kind: TracingPolicy
metadata:
name: monitor-sensitive-file-access
spec:
kprobes:
- call: "fd_install"
syscall: false
args:
- index: 0
type: "int"
- index: 1
type: "file"
selectors:
- matchArgs:
- index: 1
operator: "Prefix"
values:
- "/etc/shadow"
- "/etc/passwd"
- "/etc/sudoers"
- "/root/.ssh/"
- "/etc/kubernetes/pki/"
matchActions:
- action: Post
kubectl apply -f file-access-monitor.yaml
tetra getevents -o compact --process-filter "event_set:PROCESS_KPROBE"
5. Author TracingPolicy for Network Connection Monitoring Monitor outbound TCP connections using the tcp_connect kprobe:
apiVersion: cilium.io/v1alpha1
kind: TracingPolicy
metadata:
name: monitor-tcp-connections
spec:
kprobes:
- call: "tcp_connect"
syscall: false
args:
- index: 0
type: "sock"
selectors:
- matchActions:
- action: Post
6. Author TracingPolicy for Privilege Escalation Detection Detect setuid/setgid calls that may indicate privilege escalation:
apiVersion: cilium.io/v1alpha1
kind: TracingPolicy
metadata:
name: detect-privilege-escalation
spec:
kprobes:
- call: "__sys_setuid"
syscall: false
args:
- index: 0
type: "int"
selectors:
- matchArgs:
- index: 0
operator: "Equal"
values:
- "0"
matchActions:
- action: Post
- call: "commit_creds"
syscall: false
args:
- index: 0
type: "cred"
selectors:
- matchActions:
- action: Post
7. Runtime Enforcement with Sigkill Action Block unauthorized binary execution by killing the process in-kernel:
apiVersion: cilium.io/v1alpha1
kind: TracingPolicy
metadata:
name: enforce-no-crypto-miners
spec:
kprobes:
- call: "sys_execve"
syscall: true
args:
- index: 0
type: "string"
selectors:
- matchArgs:
- index: 0
operator: "Postfix"
values:
- "xmrig"
- "minerd"
- "cpuminer"
- "cryptonight"
matchActions:
- action: Sigkill
8. Export Events to SIEM Configure Tetragon to export JSON events to a file sink for Fluentd/Filebeat/Vector ingestion:
helm upgrade tetragon cilium/tetragon -n kube-system \
--set tetragon.exportFilename=/var/log/tetragon/tetragon.log \
--set tetragon.exportFileMaxSizeMB=100 \
--set tetragon.exportFileMaxBackups=5
Then configure your log shipper (e.g., Filebeat) to tail /var/log/tetragon/tetragon.log and send to your SIEM.
9. Kubernetes-Aware Namespace Filtering Use TracingPolicyNamespaced to scope monitoring to specific namespaces:
apiVersion: cilium.io/v1alpha1
kind: TracingPolicyNamespaced
metadata:
name: monitor-production-file-access
namespace: production
spec:
kprobes:
- call: "fd_install"
syscall: false
args:
- index: 0
type: "int"
- index: 1
type: "file"
selectors:
- matchArgs:
- index: 1
operator: "Prefix"
values:
- "/etc/shadow"
- "/etc/passwd"
Examples
Detect Reverse Shell Connections
apiVersion: cilium.io/v1alpha1
kind: TracingPolicy
metadata:
name: detect-reverse-shells
spec:
kprobes:
- call: "tcp_connect"
syscall: false
args:
- index: 0
type: "sock"
selectors:
- matchBinaries:
- operator: "In"
values:
- "/bin/bash"
- "/bin/sh"
- "/usr/bin/python3"
- "/usr/bin/perl"
- "/usr/bin/nc"
- "/usr/bin/ncat"
matchActions:
- action: Post
Monitor Container Escape Attempts
apiVersion: cilium.io/v1alpha1
kind: TracingPolicy
metadata:
name: detect-container-escape
spec:
kprobes:
- call: "sys_openat"
syscall: true
args:
- index: 0
type: "int"
- index: 1
type: "string"
selectors:
- matchArgs:
- index: 1
operator: "Prefix"
values:
- "/proc/1/root"
- "/proc/1/ns"
- "/sys/kernel/security"
- "/proc/sysrq-trigger"
matchActions:
- action: Post
- call: "sys_mount"
syscall: true
args:
- index: 0
type: "string"
- index: 1
type: "string"
- index: 2
type: "string"
selectors:
- matchActions:
- action: Post
Full Event Pipeline: Tetragon to Elasticsearch
tetra getevents -o json | jq -c 'select(.process_kprobe != null)' | \
while IFS= read -r line; do
curl -s -X POST "http://elasticsearch:9200/tetragon-events/_doc" \
-H "Content-Type: application/json" \
-d "$line "
done
