The problem
VPN errors become easier to diagnose when you correlate client time, authentication events and firewall logs.
Recommended approach
Use the exact failure timestamp and check authentication, negotiation and policy logs together.
Step-by-step checklist
- Note the exact client time.
- Check authentication events.
- Check VPN negotiation logs.
- Verify firewall policy and NAT if relevant.
- Compare with a successful connection.
MY WAY IT SERVICES
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