mirror of
https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git
synced 2026-07-17 13:15:16 +03:00
mukul975
c21af3347e
- Add scripts/agent.py and references/api-reference.md to all remaining skills - Update all 648 LICENSE files: copyright now reads 'Mahipal' - Add implementing-security-monitoring-with-datadog (new skill with full anatomy) - All 649 skills now have: SKILL.md, LICENSE, scripts/agent.py, references/api-reference.md
64 lines
1.7 KiB
Markdown
64 lines
1.7 KiB
Markdown
# ARP Poisoning Detection — API Reference
|
|
|
|
## Libraries
|
|
|
|
| Library | Install | Purpose |
|
|
|---------|---------|---------|
|
|
| scapy | `pip install scapy` | PCAP parsing and ARP packet analysis |
|
|
|
|
## Scapy ARP Packet Fields
|
|
|
|
| Field | Description |
|
|
|-------|-------------|
|
|
| `op` | Operation: 1=request, 2=reply |
|
|
| `hwsrc` | Source MAC address |
|
|
| `psrc` | Source IP address |
|
|
| `hwdst` | Destination MAC address |
|
|
| `pdst` | Destination IP address |
|
|
|
|
## ARP Spoofing Indicators
|
|
|
|
| Indicator | Description | Severity |
|
|
|-----------|-------------|----------|
|
|
| Duplicate MACs for IP | Same IP mapped to multiple MACs | CRITICAL |
|
|
| MAC claiming many IPs | One MAC responding for 3+ IPs | HIGH |
|
|
| Gratuitous ARP flood | Excessive unsolicited ARP replies | MEDIUM |
|
|
| ARP flip-flop | IP/MAC mapping changes rapidly | HIGH |
|
|
|
|
## Scapy PCAP Analysis
|
|
|
|
```python
|
|
from scapy.all import rdpcap, ARP
|
|
packets = rdpcap("capture.pcap")
|
|
arp_replies = [p for p in packets if ARP in p and p[ARP].op == 2]
|
|
```
|
|
|
|
## System ARP Table
|
|
|
|
```bash
|
|
arp -a # Display ARP table
|
|
arp -d <ip> # Delete ARP entry
|
|
ip neigh show # Linux: show neighbor table
|
|
```
|
|
|
|
## arpwatch Database Format
|
|
|
|
```
|
|
<mac>\t<ip>\t<timestamp>\t<hostname>
|
|
```
|
|
|
|
## Detection Tools
|
|
|
|
| Tool | Description |
|
|
|------|-------------|
|
|
| arpwatch | Monitors ARP table changes, emails on flip-flop |
|
|
| arpsnitch | Real-time ARP spoofing alert |
|
|
| XArp | Advanced ARP spoofing detection |
|
|
| Snort rule | `alert arp any any -> any any (msg:"ARP spoof"; ...)` |
|
|
|
|
## External References
|
|
|
|
- [Scapy Documentation](https://scapy.readthedocs.io/)
|
|
- [arpwatch Manual](https://linux.die.net/man/8/arpwatch)
|
|
- [MITRE T1557.002 — ARP Cache Poisoning](https://attack.mitre.org/techniques/T1557/002/)
|