Sophos Firewall Site-to-Site VPN Connection Troubleshooting

Servicing24 provides assessment and scoped support in Bangladesh.

Problems covered: Tunnel failures, intermittent drops and inaccessible inter-office applications.

Review deployed SFOS and VPN type, peer reachability, authentication, IPsec proposals and selectors or site-to-site SSL certificate settings as applicable. Assess routes, firewall rules, subnet overlap, NAT and logs. Coordinate approved scoped corrections with the remote administrator and test agreed traffic in both directions. A tunnel-up indicator alone does not confirm application access.

Validation and handover: Record the agreed checks, approved changes, remaining dependencies and recommendations. Monitoring covers only the agreed observation period.

Share the model, serial number, deployed software, topology, exact error and affected traffic through an approved secure channel. Do not send passwords, VPN secrets or unmasked configuration exports in the enquiry. Changes require authorized access, approval, a configuration backup and rollback planning. Disruptive work or failover tests require an agreed maintenance window. Charges, scheduling, coverage and service warranty are confirmed in the quotation. Licenses, subscriptions, OEM contracts, hardware, ISP charges and wider redesign are quoted separately. Renewal eligibility and OEM escalation depend on vendor rules and valid entitlements; support assistance does not imply OEM authorization. Firmware changes require separately agreed compatibility and upgrade-path review. No fixed completion time or zero-downtime guarantee is implied.