C
CrowdSec•2mo ago
2kybe3

is there a way to disable emails for incremental bans.

Hi! I’m using OPNsense and Proxmox with CrowdSec (Proxmox being the one hosting the LAPI) and have the firewallservices/pf-scan-multi_ports scenario active. The issue is that a persistent IP keeps scanning, and each incremental ban triggers an email. Is there a way to suppress emails for incremental bans, so I only get notified the first time or if it got unbanned and then banned again? Any help would be greatly appreciated!
2 Replies
CrowdSec
CrowdSec•2mo ago
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iiamloz
iiamloz•2mo ago
You would have to have a 2 stage profile like so (adapted from the default profiles): I added comments to the filters so you can see the logic behind it 
name: default_ip_remediation
#debug: true
filters:
## First time seen so GetDecisionsCount(Alert.GetValue()) will be 0
 - Alert.Remediation == true && Alert.GetScope() == "Ip" && GetDecisionsCount(Alert.GetValue()) == 0
decisions:
 - type: ban
   duration: 4h
#duration_expr: Sprintf('%dh', (GetDecisionsCount(Alert.GetValue()) + 1) * 4)
notifications:
  - email_default
on_success: break ## we break here not to fall into the scaling decisions
---
name: default_ip_remediation_scale
#debug: true
filters:
## We catch everything that the first profile doesnt catch and apply scaling decisions and no notification
 - Alert.Remediation == true && Alert.GetScope() == "Ip"
decisions:
 - type: ban
   duration: 4h
duration_expr: Sprintf('%dh', (GetDecisionsCount(Alert.GetValue()) + 1) * 4)
on_success: break
---
name: default_range_remediation
#debug: true
filters:
 - Alert.Remediation == true && Alert.GetScope() == "Range"
decisions:
 - type: ban
   duration: 4h
#duration_expr: Sprintf('%dh', (GetDecisionsCount(Alert.GetValue()) + 1) * 4)
# notifications:
#   - slack_default  # Set the webhook in /etc/crowdsec/notifications/slack.yaml before enabling this.
#   - splunk_default # Set the splunk url and token in /etc/crowdsec/notifications/splunk.yaml before enabling this.
#   - http_default   # Set the required http parameters in /etc/crowdsec/notifications/http.yaml before enabling this.
#   - email_default  # Set the required email parameters in /etc/crowdsec/notifications/email.yaml before enabling this.
on_success: break
name: default_ip_remediation
#debug: true
filters:
## First time seen so GetDecisionsCount(Alert.GetValue()) will be 0
 - Alert.Remediation == true && Alert.GetScope() == "Ip" && GetDecisionsCount(Alert.GetValue()) == 0
decisions:
 - type: ban
   duration: 4h
#duration_expr: Sprintf('%dh', (GetDecisionsCount(Alert.GetValue()) + 1) * 4)
notifications:
  - email_default
on_success: break ## we break here not to fall into the scaling decisions
---
name: default_ip_remediation_scale
#debug: true
filters:
## We catch everything that the first profile doesnt catch and apply scaling decisions and no notification
 - Alert.Remediation == true && Alert.GetScope() == "Ip"
decisions:
 - type: ban
   duration: 4h
duration_expr: Sprintf('%dh', (GetDecisionsCount(Alert.GetValue()) + 1) * 4)
on_success: break
---
name: default_range_remediation
#debug: true
filters:
 - Alert.Remediation == true && Alert.GetScope() == "Range"
decisions:
 - type: ban
   duration: 4h
#duration_expr: Sprintf('%dh', (GetDecisionsCount(Alert.GetValue()) + 1) * 4)
# notifications:
#   - slack_default  # Set the webhook in /etc/crowdsec/notifications/slack.yaml before enabling this.
#   - splunk_default # Set the splunk url and token in /etc/crowdsec/notifications/splunk.yaml before enabling this.
#   - http_default   # Set the required http parameters in /etc/crowdsec/notifications/http.yaml before enabling this.
#   - email_default  # Set the required email parameters in /etc/crowdsec/notifications/email.yaml before enabling this.
on_success: break

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