Description
Sophos SG 310 — Next-Generation Firewall

The Sophos SG 310 is a dedicated mid-range firewall appliance built to combine optimal network performance with complete UTM threat prevention. Powered by modern multi-core architecture, the SG 310 easily manages complex security workloads including stateful filtering, intrusion prevention, and SSL inspection without compromising speed.
Architecture & Interface Flexibility
Housed in a sturdy 1U rackmount chassis, the device comes equipped with 8 Gigabit Ethernet RJ45 ports and 2 SFP transceiver cages. To prevent premature hardware obsolescence, the integrated FleXi Port module slot provides options to swap in optional copper or optical modules as bandwidth demands grow.
Integrated Storage & Management
Featuring an onboard high-speed SSD, the SG 310 caches proxy content in memory while storing logs and quarantine files directly on the unit. Administrators gain real-time visibility through the intuitiveness of the built-in management interface, allowing rapid deployment of security configurations across all network layers.
Selection Guide
For Basic Gigabit Setup
Utilize the 8 onboard 1000Base-T copper ports for core router, switch, and DMZ connections.
For High-Speed Fiber Interconnects
Populate the onboard SFP cages or insert a 10G SFP+ FleXi Port expansion module to connect to core distribution switches over fiber.
For Modular Expansion
Determine required port types and density, then select the appropriate FleXi Port module (copper, SFP, SFP+, or QSFP+).
Always Verify
Confirm hardware revision, firmware release versions, and module compatibility prior to purchasing modular accessories or licensing renewals.
Installation Notes
Mount the SG 310 into a standard 19-inch rack enclosure using the included rackmount ears. Connect Ethernet and fiber cables to designated WAN, LAN, and management ports. Plug in the power supply cord and switch on the appliance. Network interfaces can be initially configured using the default Web Admin console (typically accessible via IP 192.168.0.1 on port LAN/E0) or connected via serial console cable for manual setup. Hot-swappable FleXi Port modules should be installed with caution following hardware manual guidelines.
Best Practices
Ensure adequate airflow space around the 1U chassis inside the rack. Standardize port assignments across firewalls for cleaner management. Schedule regular firmware and pattern updates through the Sophos administration console. Always create and archive off-box system configuration backups before deploying major software updates or modifying interface rules. Monitor hardware thermal status and resource utilization using built-in system reporting dashboards.
Benefits for IT Teams
- Streamlined network deployment with all-in-one security controls.
- Fast, local log generation and reporting without dedicated external server requirements.
- Simple scale-up capability using modular FleXi Port modules.
- Lower operational maintenance through standardized software controls across SG appliances.
- Flexible cluster option ensures high availability for business-critical applications.
Main Performance & Hardware Categories
1. High-Speed UTM Performance
Engineered using multi-core processing acceleration and in-memory proxy scanning to handle concurrent security tasks without latency. Delivers up to 17 Gbps firewall throughput, 5 Gbps IPS, and 3 Gbps VPN performance for demanding traffic environments.
2. Modular Interface & FleXi Port Expansion
Includes fixed RJ45 copper ports and SFP slots, complemented by a versatile FleXi Port expansion slot. This configuration enables custom network setups including additional copper, fiber 1G, 10G SFP+, or 40G QSFP+ modules.
3. Integrated Solid-State Storage (SSD)
Equipped with local high-speed SSD storage (180 GB class). Eliminates performance delays by facilitating local reporting, real-time logging, on-box data indexing, and rapid spam quarantine access directly on the device.
4. Enterprise Reliability & High Availability
Features active/active or active/passive HA support and dynamic clustering capabilities. Allows organizations to scale bandwidth demands and secure redundant failover options across infrastructure deployments.
11. Why Choose Sophos SG 310
- High performance-to-cost ratio tailored specifically for mid-market business demands.
- Modular FleXi Port technology allows network interface upgrades without replacing hardware.
- Integrated SSD storage improves response times for log access and security reports.
- Simple centralized administrative console for controlling firewall, web, email, and VPN policies.
- Built-in clustering support allows smooth scaling up to 10 appliances in a unified cluster.
12. Six Main Benefits
Multi-Gigabit Protection
Handles deep packet inspection and intrusion prevention simultaneously at high speeds.
Benefit: Prevents security processing from becoming a network performance bottleneck.
Infrastructure Modularity
Features customizable FleXi Port slots for flexible interface selection.
Benefit: Easily adapt to changing media requirements (fiber, copper, 10G upgrades).
On-Box Analytics & Reporting
Standard onboard solid-state drive stores system log data locally.
Benefit: Real-time visibility and comprehensive reports without requiring external database servers.
High Density & Seamless Integration
Standard 1U rack-mountable casing fits into standard 19-inch equipment racks.
Benefit: Clean server rack installation with front-panel LED activity monitoring.
Consolidated UTM Security
Integrates network firewall, IPS, web protection, email encryption, and sandboxing.
Benefit: Lowers operational complexity and reduces hardware sprawl across sites.
Scalable High Availability
Supports dynamic clustering and HA deployment modes out of the box.
Benefit: Protects mission-critical networks against uptime losses and hardware failures.
Typical Use Cases
1. Mid-Sized Enterprise Edge Security
Deploy the SG 310 as the primary perimeter firewall to secure corporate networks against external threats and unauthorized access.
2. Multi-Site IPSec & SSL VPN Hub
Serve as the central concentration hub for connecting remote workers and branch offices over encrypted VPN tunnels.
3. High-Speed Fiber Uplink Integration
Utilize SFP ports or add 10G FleXi Port modules to establish direct fiber connections into core network switches.
4. Segmented Internal Network Zones
Leverage the 8 fixed copper ports alongside expansion modules to isolate guest Wi-Fi, internal server pools, and department networks.
5. Consolidated Web & Email Filtering
Scan traffic for malware, manage web access policies, and enforce data loss prevention (DLP) for email without separate appliances.
6. Managed Security Deployments (MSPs)
Standardize mid-market client sites with a uniform 1U security appliance for simplified remote policy management and hardware maintenance.
Who Should Buy Sophos SG 310?
Mid-sized enterprises, educational institutions, government offices, and MSPs looking for a versatile 1U security appliance that balances high throughput performance with flexible interface options. Ideal for organizations replacing aging perimeter firewalls or unifying disparate security tools into a single management console.
Frequently Asked Questions
What is the Sophos SG 310?
The Sophos SG 310 is a 1U mid-range network security firewall appliance designed to provide unified threat management (UTM) protection for enterprise and mid-market networks.
What is the firewall throughput of the SG 310?
The Sophos SG 310 delivers firewall throughput speeds up to 17 Gbps and IPS throughput up to 5 Gbps.
Can I expand the network ports on the SG 310?
Yes, the appliance features one FleXi Port expansion slot that accepts interchangeable copper, fiber 1G, 10G SFP+, or 40G QSFP+ modules.
What storage is used on the Sophos SG 310?
The appliance comes standard with an integrated solid-state drive (SSD) for local log storage, reporting, and proxy caching.
Is the Sophos SG 310 rack-mountable?
Yes, it features a 1U form factor designed for mounting into standard 19-inch equipment racks using the included rackmount brackets.
Does the SG 310 support high availability (HA)?
Yes, it supports dynamic clustering, active/active, and active/passive high availability setups for redundant protection.


