Jul 26, 2017 Troubleshooting IPSEC VPN Connectivity Issues Verify the VPN Service is enabled under Global Settings; Verify the tunnel is enabled within the tunnel configuration settings; Ensure the configurations match on both sides of the tunnel. Common issues are: Mismatched PSK; Mismatched traffic selectors (Local and Remote Networks) Mismatched Phase 1 and Phase 2 security settings Troubleshoot Azure Site-to-Site VPN disconnects Troubleshooting: Azure Site-to-Site VPN disconnects intermittently. 10/30/2018; 2 minutes to read +1; In this article. You might experience the problem that a new or existing Microsoft Azure Site-to-Site VPN connection is not stable or disconnects regularly. Troubleshooting a Site to Site VPN on a SRX Series Gateway First of all check the VPN configuration. This is also useful if and when you need to confirm the Phase 1 and Phase 2 parameter's with the remote end. admin@srx> show configuration security ike admin@srx> show configuration security ipsec. 2. Confirm Phase 1. To confirm the successful completion of Phase 1 run the following command.

z" How to test a tunnel" on page 4 z" How to troubleshoot a tunnel" on page 5: z"1. Check the WAN to WAN connectivity" on page 6 z"2. Confirm VPN establishment" on page 7 z"3. Check debugging information" on page 11 z"4. Check the router configuration" on page 13 z"5. Fix and prevent SA out-of-step problems" on page 17 z"6. Check Microsoft

Fortinet Knowledge Base - View Document The second VPN tunnel on the list has its selectors in a down state so the focus will be on that tunnel. 2) Phase 1 checks After the problematic tunnel has been identified, it will be possible to understand the status of phase 1. To do so, type below command: #diagnose vpn ike gateway list name to10.189.0.182 vd: root/0 name: to10.189.0.182 ISAKMP (IKE Phase 1) status messages MM_WAIT_MSG# - … As you can see the Main mode is the same as the flowchart at the top of the page. Aggressive mode only uses 4 steps to establish the tunnel. Troubleshooting ISAKMP Or Phase 1 VPN connections. When troubleshooting VPNs, a very common problem is phase 1 not establishing correctly.

Chapter 4: Common IPsec VPN Issues | Network World

Troubleshoot VPN Tunnel Phase 1 (IKE) Failures