VPN traffic is not passing through the vpn tunnel

Hi Anesu,

Thank you for reaching out to Sophos Community.

I would recommend checking the following.

• check the drop packet/packet capture 
  • Sophos Firewall: How to troubleshoot dropped packets
  • drop-packet-capture
• Is the route correct for both sides' traffic? Are the priority correct(static, OSPF, and SDWAN)
• If traffic is being translated (NAT), correct the translation. Do both sides have the same network configuration?
• Can the Firewall can't ping other devices on the other side of the VPN? or only the one you're testing

For more reference, kindly see kb's below.

• Sophos Firewall: Traffic is not passing through the VPN tunnel
• Sophos Firewall: Troubleshooting site to site IPsec VPN issues
• NAT with route-based IPsec when local and remote subnets are the same

Hi Anesu,

Thank you for reaching out to Sophos Community.

I would recommend checking the following.

• check the drop packet/packet capture 
  • Sophos Firewall: How to troubleshoot dropped packets
  • drop-packet-capture
• Is the route correct for both sides' traffic? Are the priority correct(static, OSPF, and SDWAN)
• If traffic is being translated (NAT), correct the translation. Do both sides have the same network configuration?
• Can the Firewall can't ping other devices on the other side of the VPN? or only the one you're testing

For more reference, kindly see kb's below.

• Sophos Firewall: Traffic is not passing through the VPN tunnel
• Sophos Firewall: Troubleshooting site to site IPsec VPN issues
• NAT with route-based IPsec when local and remote subnets are the same