NetScaler ADC — Application Delivery and Security for the Modern Enterprise
Every application your organisation runs depends on reliable, secure delivery. NetScaler is a high-performance application delivery controller (ADC) that ensures web applications, virtual desktops, and AI workloads reach users quickly and securely. As a Citrix Platinum Partner with 40+ years of experience, OAS provides expert NetScaler deployment and optimisation across South Africa.
What Is NetScaler?
NetScaler sits between your users and your applications, managing traffic flow, enforcing security policies, and optimising performance. It handles load balancing, SSL/TLS offloading, content switching, and application-layer security for organisations that cannot afford downtime.
For South African enterprises running Citrix Virtual Apps and Desktops (CVAD) or Citrix DaaS, NetScaler secures and optimises HDX session delivery. It provides Global Server Load Balancing (GSLB) across data centres, SSL termination to reduce backend server load, and a web application firewall (WAF) that protects against OWASP Top 10 threats. NetScaler also integrates with Citrix Secure Private Access for zero-trust network access (ZTNA) to web and SaaS applications.
Key Capabilities
Intelligent Load Balancing
NetScaler distributes traffic across application servers using advanced algorithms including round robin, least connections, and token latency-based balancing. Global Server Load Balancing (GSLB) extends this capability across multiple data centres, ensuring high availability and optimal response times for users regardless of location.
SSL/TLS Offloading
Offloading SSL/TLS encryption and decryption from backend servers to the NetScaler appliance reduces server CPU load and simplifies certificate management. NetScaler handles the computationally intensive cryptographic operations at the network edge, freeing application servers to focus on processing requests.
Web Application Firewall
NetScaler's built-in WAF protects web applications against SQL injection, cross-site scripting (XSS), and other OWASP Top 10 attack vectors. Policy-based rules can be customised per application without deploying additional security infrastructure, providing defence in depth for internet-facing services.
NetScaler AI Gateway
As South African enterprises adopt large language models (LLMs), NetScaler AI Gateway provides a single control plane for both application and AI traffic. WAF signatures specific to LLM endpoints protect against prompt injection and model abuse. Token-based rate limiting controls API consumption costs, while token latency-based and round-robin load balancing distributes requests across multiple AI backends.
NetScaler Console
NetScaler Console delivers centralised management, analytics, and orchestration across your entire NetScaler fleet. Administrators gain fleet-wide visibility into performance, configuration status, and security posture from a single interface. Console simplifies configuration management at scale and provides the monitoring data needed to identify bottlenecks before they affect users.
Gateway Service for StoreFront
Citrix Gateway Service for StoreFront provides cloud-based secure HDX remote access for both DaaS and on-premises CVAD environments. This eliminates dedicated on-premises gateway appliances, reducing hardware costs for organisations delivering virtual desktops to remote workers.
Why OAS for NetScaler
Citrix Platinum Partner
OAS holds Citrix Platinum Partner status — the highest partnership tier available. With over 40 years of continuous Citrix partnership, OAS has deep expertise in NetScaler ADC configuration and optimisation across complex enterprise environments in healthcare, financial services, government, and mining.
End-to-End Integration with deviceTRUST
NetScaler does not operate in isolation. OAS deploys NetScaler as part of complete virtual workspace architectures that include CVAD, DaaS, Nutanix HCI, and Microsoft Azure infrastructure. For organisations requiring continuous device posture assessment, deviceTRUST complements NetScaler at the endpoint level — NetScaler secures network and application delivery, while deviceTRUST enforces real-time access control based on device context, compliance status, and location. Our structured engagement process ensures seamless integration across your environment.
AI Gateway Readiness
South African enterprises are at the early stages of LLM adoption. OAS helps organisations deploy NetScaler AI Gateway to establish centralised governance over AI traffic before usage scales. Getting the right policies, rate limits, and observability in place now prevents cost overruns and security gaps as AI adoption accelerates.
Licensing: UHMC and the LAS Deadline
UHMC Bundle Advantage
The Citrix Universal Hybrid Multi-Cloud (UHMC) subscription includes unlimited NetScaler instances with up to 1 000 Gbps total throughput. Organisations running multiple NetScaler appliances gain significant cost savings compared to per-instance licensing. UHMC also bundles CVAD, DaaS, XenServer, Secure Private Access, deviceTRUST, and uberAgent — consolidating your entire virtual workspace stack under one subscription.
LAS Migration: 15 April 2026
File-based licensing ends on 15 April 2026. NetScaler appliances that have not migrated to the Licence Activation Service (LAS) will stop recognising licences after this date. Contact OAS immediately for a NetScaler licence audit and migration plan if your organisation has not yet completed the transition.