Load balancing and failover mechanisms

What kind of load balancing and failover mechanisms are available in Sangfor's IPSec/SSL VPN solutions?

Load Balancing and Failover in Sangfor VPNs:

1. Load Balancing:

• Distributes traffic across multiple VPN gateways for optimal performance.
• Methods: Round Robin, Weighted Round Robin, Least Connection, IP Hash, URL Hash.
  
  

2. Failover:

• Ensures uninterrupted service if a gateway fails.
• Mechanisms: Active-Active, Active-Passive, VRRP.
  
  

Remote application features:
- Built-in load balancer for remote application servers on basis of number of sessions , CPU,
memory , I / O, integrated performance, etc. Provides secure virtual desktop workspace where all
data and I/O trac are encrypted, monitored and controlled. Under secure desktop environment,
applications, data and peripherals activities are restricted according to security policies.
- Controlled activites include USB key, printer, file save, file copy, file share, etc.

you may use built in load balancer for application/user request load balancing to distribute the requests evenly accross the platform.
for failover, you can opt for active-active and active passive depending uopn the requirement and acquire licensing

Sangfor's IPSec/SSL VPN solutions offer dynamic load balancing and failover mechanisms to ensure high availability and optimal performance. Through intelligent load balancing algorithms, traffic is distributed across multiple VPN gateways based on factors such as server load and network latency, preventing overloading on any single gateway. In case of gateway failure or network disruption. Sangfor implements health monitoring and automatic failback mechanisms to swiftly restore normal operations once the failed gateway is back online, enhancing the resilience of the VPN infrastructure.

Sangfor's IPSec/SSL VPN solutions offer load balancing and failover mechanisms to ensure high availability and optimal performance for remote users. Here's a breakdown of the likely functionalities:

Load Balancing:

    Multi-WAN Support: Sangfor firewalls or dedicated VPN gateways can be configured with multiple WAN connections. This allows for distributing VPN traffic across these connections, preventing overload on any single link and improving overall throughput for users.
    Session Persistence (optional): This advanced feature helps maintain user connections to the same VPN server during sessions, even when traffic is balanced across different WAN links. This can improve user experience by avoiding disruptions caused by re-authentication upon switching connections.

Failover Mechanisms:

    Primary/Secondary Link Configuration: A primary WAN connection can be designated for VPN traffic, with a secondary link acting as a backup. If the primary connection goes down, the system automatically fails over to the secondary link, minimizing downtime for remote users.
    Health Monitoring: Sangfor's firewalls or VPN gateways likely monitor the health of WAN connections. If a primary link fails, the system detects the issue and initiates the failover process seamlessly.
    Route Priority: This feature can be used to define the priority for different VPN paths (connections). Higher priority routes are used first, with lower priority ones acting as backups. This allows for intelligent failover based on factors like bandwidth or latency.

Hi, Sangfor’s IPSec/SSL VPN solutions incorporate a variety of strategies for load balancing and failover:

Multi-HQ Configuration: In a Software-Defined Wide Area Network (SD-WAN) setup, multiple headquarters (HQ) devices can be incorporated within the VPN topology. This facilitates improved redundancy, load balancing, and routing optimization, allowing branches to access multiple HQ sites and data centers efficiently while ensuring network reliability and performance.

Dynamic Routing Protocols: Each branch should be configured to connect to multiple HQ sites, and dynamic routing protocols should be set up to choose the best traffic path based on real-time conditions.

Network Redundancy and Failover: Redundancy and failover mechanisms should be implemented to prevent any network disruptions or downtimes.

Intelligent Link Selection: SANGFOR SSL VPN is equipped with an Intelligent Link Selector, which can automatically choose the best link for remote access when multiple links are available.

Full Mesh Network Configuration: In this setup, each branch device establishes a VPN tunnel to every HQ device, providing optimal redundancy and load balancing.

Dual NGAF Devices at HQ: A second NGAF device should be set up at the HQ with the same local VPN users in HA mode, ensuring that all branches can connect to two HQ devices.

Sangfor's IPSec/SSL VPN solutions offer load balancing and failover mechanisms such as dynamic load balancing, link aggregation, and server clustering. Dynamic load balancing distributes traffic evenly across multiple VPN gateways to optimize performance and scalability. Link aggregation combines multiple network links into a single high-speed connection to increase bandwidth and fault tolerance. Server clustering ensures high availability by replicating VPN servers and enabling seamless failover in case of hardware or software failures, thereby ensuring uninterrupted VPN services for users. These mechanisms enhance reliability, performance, and resilience of Sangfor's VPN solutions.

Hi,

Sangfor's IPSec and SSL VPN solutions offer the following load balancing and failover solutions:

Load Balancing
   - Policy-Based Routing which allows administrators to define rules for distributing traffic across multiple VPN gateways based on source IP addresses destination IP addresses, and/or application type
   - Least connections which offers load balancing based on the number of active connections on each VPN gateway.

Failover
   - Active-Standby Failover in which one of the VPN gateway servers as the primary connection while the other acts as a hot standby
   - Multi-WAN Failover wherein if the primary internet connection fails, the VPN service can automatically do the failover to the secondary internet connection
   - Health Checks where Sangfor can utilize health checks to monitor the status of VPN gateways and if the primary gateway becomes unavailable, the system will automatically initiates failover to a healthy backup

The Load Balancing functionality evenly spreads network traffic among several VPN gateways to enhance efficiency and use techniques like Round Robin, Weighted Round Robin, Least Connection, IP Hash, and URL
Failover ensures continuous service availability by seamlessly switching to backup gateways in case of primary gateway failure  and use methods like Active-Active, Active-Passive, and Virtual Router Redundancy Protocol (VRRP).