Termidesk Connect 1.4: Connect Manager, Global Load Balancing Enhancements, and HA Cluster Updates with Zero Service Interruption

Uveon-Cloud Technologies (part of the Astra Group) has released a new version of its load balancer, Termidesk Connect 1.4. The update expands management capabilities for large and distributed infrastructures, enhances service continuity, and provides administrators with additional tools for global load balancing, network configuration, and centralized infrastructure management.

Global Load Balancing Enhancements

In Termidesk Connect 1.4, the GSLB global load balancing module has been reworked, broadening the solution's applicability in complex network topologies. Additionally, manual editing of DNS zones is now supported, the number of supported DNS record types has been increased, and GeoIP database handling has been improved. These changes give administrators greater control over distributed infrastructure management and cross-site request routing.

Stable Load Distribution

Termidesk Connect 1.4 introduces the CONSISTENTHASHING algorithm for application‑level (L7) load balancing. The new feature includes five algorithm variants and is designed for scenarios where predictable request distribution across servers is critical.

When the pool composition changes – for example, when a node is added, disabled, or restored – CONSISTENTHASHING minimizes request redistribution. This is particularly important for high‑load web applications, distributed storage systems, caching services, and other applications sensitive to changes in the serving server.

The new version also extends persistence mechanisms for real‑server selection. Administrators can now set a cookie name and additional attributes for the cookie‑insert algorithm, while the strict‑service mode allows removing persistence records for servers being decommissioned.

HA Cluster Updates with Zero Service Interruption

Termidesk Connect 1.4 enables synchronization of user sessions between nodes in a high‑availability configuration. This allows administrators to sequentially maintain and update HA cluster devices without interrupting published services.

During planned updates, sessions are preserved and transferred between nodes, so users do not need to reconnect to applications. For organizations where the load balancer is a critical component of the IT infrastructure, this helps reduce maintenance windows and minimize the impact of scheduled work on business processes.

In addition, the developers have improved the display of high‑availability configuration statuses and added the ability to manage administrative statuses of backup node interfaces.

More Capabilities for HTTP, TLS, and TCP

The new version expands HTTP and TLS protocol handling capabilities and increases the flexibility of server and client TCP‑profile configuration.

New parameters and system settings have been added to TCP profiles. This gives administrators more options to adapt Termidesk Connect to the specifics of particular applications, networks, and traffic patterns.

Additionally, the server TLS profile now includes the Stateless Session Resumption mechanism, which allows re‑establishing secure connections without storing the state of the previous TLS session on the load balancer.

More Flexible Service Health Checks

Health‑check capabilities for real servers have been significantly expanded. For HTTP and HTTPS checks, the OPTIONS method can now be used, request bodies can be sent, and response analysis can be customized using regular expressions.

Administrators can check not only port availability or the presence of a specific response code but also the presence of required data in the application response content. This helps more accurately determine the actual service status and exclude from load balancing those servers that are formally reachable but unable to properly handle user requests.

For most check types, the ipset‑id parameter has also been added, extending the capabilities of working with IP address sets.

New Component: Termidesk Connect Manager

Along with Termidesk Connect 1.4, a new component – Termidesk Connect Manager – has been introduced. It is designed for centralized management of application delivery infrastructure.

Termidesk Connect Manager enables configuration visualization, statistics collection, and a range of automation functions for managing multiple devices. The new component simplifies work with distributed Termidesk Connect infrastructure and provides administrators with a unified tool for monitoring its configuration and status.

New Network Integration Capabilities

The update adds support for SNMP Traps for forwarding events to monitoring systems, the LLDP protocol for discovering neighboring network devices, VRF interaction and isolation configuration, and support for asymmetric routing.

SSL profiles now include automatic verification of certificate and private key matching, as well as a command for creating certificate chains. This reduces the likelihood of errors when configuring secure connections.

Daily Administration Made Easier

The Termidesk Connect web interface has received a number of improvements that speed up routine operations. Administrators can now create related entities directly from the current window, copy existing objects to create new ones, and enable or disable network interfaces.

Optional parameters are now hidden by default, making configuration forms more compact and intuitive. The display of virtual servers, HA configuration statuses, and performance graphs has also been updated.

The release includes fixes for transport‑layer (L4) load balancing, geo‑balancing, LDAP authentication mechanisms, TLS session handling, and high‑availability configurations. Additional fixes address issues related to network announcements, connection termination, and the application of user‑defined rules after node restart.

“For large customers, the load balancer has long ceased to be just a traffic‑distribution tool. It becomes a critical infrastructure component on which application availability and business continuity depend. That is why in Termidesk Connect 1.4 we focused on the manageability of complex configurations, maintenance of HA clusters without service interruption, and more precise load‑distribution control. The new version expands distributed infrastructure management capabilities, helps reduce maintenance windows, and enables flexible adaptation of the load balancer to the requirements of enterprise applications,” — commented Mikhail Sobolev, Product Director for Termidesk Connect.