Rules: Excessive Firewall Denies
This rule is designed to detect excessive firewall blocks within a shortened time frame. Customers will need to adjust the threshold of this rule to align with their environment's normal vs abnormal firewall traffic patterns.
| Detail | Value |
|---|---|
| Type | Threshold |
| Category | Discovery |
| Apply Risk to Entities | srcDevice_ip |
| Signal Name | Excessive Firewall Denies |
| Summary Expression | Excessive firewall denies for source IP: {{srcDevice_ip}} |
| Threshold Count | 100 |
| Threshold Window | 5m |
| Score/Severity | Static: 1 |
| Enabled by Default | False |
| Prototype | False |
| Tags | _mitreAttackTactic:TA0007, _mitreAttackTechnique:T1046 |
- Akamai - SIEM
- Amazon AWS - VpcFlowLogs
- Amazon AWS - Web Application Firewall (WAF)
- CheckPoint - Application Control
- CheckPoint - Firewall and VPN
- CheckPoint - SmartDefense
- CheckPoint - URL Filtering
- Cisco Systems - ASA
- Cisco Systems - Meraki
- Cloudflare - Logpush
- Dell - Firewall
- Fortinet - Fortigate
- Google - Google Cloud Platform
- Microsoft - Azure
- Palo Alto Networks - Next Generation Firewall
- Sophos - UTM 9
- Zscaler - Firewall
| Origin | Field |
|---|---|
| Normalized Schema | action |
| Normalized Schema | objectType |
| Normalized Schema | srcDevice_ip |