For detailed logging, turn on the logging level to debug:.Use filters to narrow the scope of the captured traffic. Take packet captures to analyze the traffic.If incorrect, logs about the mismatch can be found under the system logs, or by using the following CLI command: If a clean-up rule is configured, the policy is configured usually from the external zone to the external zone.

Usually this policy is not required if there is no clean-up rule configured on the box. Check that the policy is in place to permit IKE and IPSec applications.

Check that the IKE identity is configured correctly.

Check for the responses of the 'Are you there?' messages from the peer in the system logs under the Monitor tab or under ikemgr logs.

If pings have been blocked per security requirements, see if the other peer is responding to the main/aggressive mode messages, or the DPDs.

Ensure that pings are enabled on the peer's external interface.

To rule out ISP-related issues, try pinging the peer IP from the PA external interface.

It is divided into two parts, one for each Phase of an IPSec VPN. This document is intended to help troubleshoot IPSec VPN connectivity issues.

Palo alto networks vpn troubleshooting