Troubleshooting articles of site to site VPN

• Troubleshooting VPN Tunnel dropping or not initializing
  • Configuring a Site to Site VPN Policy using Main Mode (Static IP address on both sites)
  • Configuring Site to Site VPN when a Site has Dynamic WAN IP address(Aggressive Mode)
  • Logs showing the message: Peer's proposed network does not match VPN Policy's Network

• Troubleshooting VPN Tunnel up but no or intermittent traffic
  • Traffic not passing through the site-to-site VPN tunnel
  • Troubleshooting Site to Site VPN with multiple WAN connections
  • Set MTU in VPN Environment in case of throughput issues
  • Route based VPN: Traffic not passing to or from a Wireless Type Zone due to Access Rules NOT auto created
  • Site to Site VPN tunnel is up but only passing traffic in one direction

• Troubleshooting Unable to access network resource over VPN tunnel issues
  
  • Troubleshooting Printing over VPN issues
  • Unable to share Networked Printer over VPN 

• Troubleshooting assigning DHCP over VPN, Hub and Spoke configuration and VPN with Overlapping subnets
  • Implementing Hub and Spoke Site-to-Site VPN
  • Configure a VPN between two SonicWalls on the same WAN subnet with same default gateway
    
    
• Troubleshooting based on Log messages
  • Log Shows "Received notify: INVALID ID INFO"
  • The log shows "IPSec Proposal does not match (Phase 1 and Phase 2)"
  • IKE Initiator: No response - remote party timeout error
  • Log shows "Received Unencrypted Packet in Crypto Active state"
  • The log shows "Received Notify: No Proposal Chosen"
  • The Log shows "payload processing failed" error message

• Troubleshooting VPN connections with 3rd party devices
  • Site to site VPN between a SonicOS Enhanced and a Cisco IOS device?

SW7570