| Feature | IPSec (IKEv2) | SSL VPN (OpenVPN) | | :--- | :--- | :--- | | | Excellent (Kernel mode) | Good (User mode) | | TCP Optimization | Poor (Drops packets under loss) | Excellent (via TCP/443) | | Corporate Proxy | Difficult (ESP protocol blocked) | Easy (Looks like HTTPS) | | Multi-Factor Authentication | Limited (Certificate + PSK) | Full (SAML, TOTP, RADIUS) | | Best for... | Site-to-site, stable fiber | Coffee shop Wi-Fi, hotel captive portals |
Last updated: Q1 2025 – Though 2.5.0 is older, it remains the last MSI version before the shift to the 2.6.x branch. sophosconnect 2.5.0 ga ipsec and sslvpn.msi
msiexec /i "sophosconnect 2.5.0 ga ipsec and sslvpn.msi" /quiet /norestart | Feature | IPSec (IKEv2) | SSL VPN
Deploy SSL VPN for sales and remote staff. Deploy IPSec for IT admins and data-center access. Troubleshooting Common 2.5.0 GA Issues Even with a GA release, issues occur. Here is the admin’s cheat sheet for version 2.5.0. Issue 1: "Configuration file is incompatible" Error: The client rejects the .scx file. Fix: Ensure your Sophos Firewall is on SFOS 19.0.1 or higher. The 2.5.0 client uses a newer config schema incompatible with SFOS 18.5. Issue 2: IPSec connects but no internet split-tunneling fails Fix: In the Sophos Firewall, under IPSec policy, enable "Split Tunneling" and specify the internal subnets (e.g., 10.0.0.0/8). Then re-download the .scx file. Version 2.5.0 respects the firewall’s exclude-lan parameter more strictly than prior versions. Issue 3: MSI fails with error 1603 Cause: A previous Sophos Connect installation is corrupt. Resolution: Deploy IPSec for IT admins and data-center access
With the release of , Sophos delivered a definitive answer to this fragmentation. The file sophosconnect 2.5.0 ga ipsec and sslvpn.msi is more than just a patch or a minor version bump; it is a unified, zero-touch, cross-protocol VPN client designed exclusively for Sophos Firewall (XG and SFOS).
msiexec /i "sophosconnect 2.5.0 ga ipsec and sslvpn.msi" AUTO_START=1 /quiet After deployment, verify the installation path: C:\Program Files (x86)\Sophos\Sophos Connect\ . Look for SophosConnect.exe . Version 2.5.0 should have a digital signature dated around April 2023. IPSec vs. SSLVPN: Which One Should You Deploy? Since this MSI supports both, you must decide which protocol to assign. Here is the 2.5.0 GA breakdown:
msiexec /i "sophosconnect 2.5.0 ga ipsec and sslvpn.msi" CONFIG_FILE="\\server\deploy\company_profile.scx" /quiet