win:security 4651
An IPsec Main Mode security association was established. Extended Mode was not enabled. A certificate was used for authentication.
- Log source
- Windows Security event log
- Host type
- Windows (workstation, member server, domain controller)
- How to enable
- Advanced Audit Policy: Logon/Logoff > Audit IPsec Main Mode
- Audit category
- Logon/Logoff
- Audit subcategory
- Audit IPsec Main Mode
- Tier, host type
- Listed
- Techniques
- 0
- Rules depending on it
- none
Why this tier
By role
| Role | Tier | Basis |
|---|---|---|
| Windows workstation | Listed | |
| Windows member server | Listed | |
| Windows domain controller | Listed | |
| Windows web server (IIS), internet-facing | Listed |
Techniques it helps detect
No ATT&CK analytic names this event. Its standing comes from the standards and rules below.
Rules that depend on it
No vendor rule names this event or source directly.
Standards and guidance naming it
| Requirement | Relation | Basis |
|---|---|---|
| Microsoft: Events to monitor with potential criticalityAppendix L: Events to Monitor (Windows Server AD DS best practices) | Names this event | potential criticality Low: An IPsec Main Mode security association was established. Extended Mode was not enabled. A certificate was used for authentication. |