# Azure Web Application Firewall, NetScaler vs Zscaler Private Access Comparison | | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Star Rating** | 4.4 out of 5 | 4.4 out of 5 | 4.4 out of 5 | | **Total Reviews** | 31 | 85 | 135 | | **Largest Market Segment** | Mid-Market (40.0% of reviews) | Enterprise (62.5% of reviews) | Enterprise (47.0% of reviews) | | **Entry Level Price** | No pricing available | Free Trial 0 Throughput, ADC Instances Per Year | No pricing available | --- ## Top Pros & Cons ### Azure Web Application Firewall **Not enough data** ### NetScaler Pros: - Ease of Management (1 reviews) - Ease of Use (1 reviews) Cons: - Expensive (1 reviews) - Expensive Licensing (1 reviews) ### Zscaler Private Access Pros: - Security (64 reviews) - Ease of Use (53 reviews) Cons: - Connection Issues (24 reviews) - Error Handling (21 reviews) --- ## Ratings Comparison | Rating | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Meets Requirements** | 9.3 (16 reviews) | 9.1 (58 reviews) | 9.1 (102 reviews) | | **Ease of Use** | 8.2 (16 reviews) | 8.6 (59 reviews) | 9.0 (105 reviews) | | **Ease of Setup** | 8.8 (11 reviews) | 8.2 (35 reviews) | 8.7 (76 reviews) | | **Ease of Admin** | 8.5 (11 reviews) | 8.8 (35 reviews) | 9.0 (31 reviews) | | **Quality of Support** | 8.2 (14 reviews) | 8.4 (55 reviews) | 8.9 (92 reviews) | | **Has the product been a good partner in doing business?** | 9.1 (11 reviews) | 8.8 (36 reviews) | 9.2 (31 reviews) | | **Product Direction (% positive)** | 8.2 (13 reviews) | 8.3 (54 reviews) | 9.4 (101 reviews) | --- ## Pricing ### Azure Web Application Firewall #### Entry-Level Pricing No pricing available #### Free Trial No information available ### NetScaler #### Entry-Level Pricing Plan: Advanced Edition Price: Free Trial 0 Throughput, ADC Instances Per Year Description: Advanced Edition is available in either a hardware or software-based appliance. Hardware options include single and multi-tenant devices, in addition to FIPS compliant and high SSL appliances. Software-based options include virtual hypervisor-based and bare metal software offerings. Key Features: - https://www.citrix.com/lp/try/citrix-networking-vpx-express.html - Surge protection and priority queuing - TriScale Clustering [Browse all 3 editions](https://www.g2.com/products/netscaler/pricing) #### Free Trial Yes ### Zscaler Private Access #### Entry-Level Pricing No pricing available #### Free Trial No information available --- ## Features Comparison By Category ### Single Sign-On (SSO) | Product | Score | Reviews | |---|---|---| | **Azure Web Application Firewall** | N/A | N/A | | **NetScaler** | N/A | N/A | | **Zscaler Private Access** | 8.7/10 | 33 | #### Authentication Options | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Authentication User experience** | Not enough data | Not enough data | 9.0 (31 reviews) | | **Supports Required Authentication systems** | Not enough data | Not enough data | 8.9 (30 reviews) | | **Multi-Factor Authentication** | Not enough data | Not enough data | 9.2 (30 reviews) | | **Supports Required Authentication Methods/Protocols** | Not enough data | Not enough data | 9.2 (28 reviews) | | **Federation/SAML support (idp)** | Not enough data | Not enough data | 8.6 (25 reviews) | | **Federation/SAML support (sp)** | Not enough data | Not enough data | 8.7 (25 reviews) | #### Access Control Types | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Endpoint access** | Not enough data | Not enough data | 9.2 (28 reviews) | | **Local Access** | Not enough data | Not enough data | 8.8 (27 reviews) | | **Remote Access** | Not enough data | Not enough data | 8.7 (30 reviews) | | **Partner Access** | Not enough data | Not enough data | 8.0 (26 reviews) | | **Supports BYOD users** | Not enough data | Not enough data | 7.9 (26 reviews) | #### Administration | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Ease of installation on server** | Not enough data | Not enough data | 8.5 (28 reviews) | | **Password Policy Enforcement** | Not enough data | Not enough data | 8.9 (29 reviews) | | **Administration Console** | Not enough data | Not enough data | 9.0 (28 reviews) | | **Ease of connecting applications** | Not enough data | Not enough data | 8.9 (28 reviews) | | **Self Service Password Administration** | Not enough data | Not enough data | 8.4 (28 reviews) | #### Platform | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Multiple Operating system support** | Not enough data | Not enough data | 8.5 (27 reviews) | | **Multi-Domain Support** | Not enough data | Not enough data | 8.5 (27 reviews) | | **Cross Browser support** | Not enough data | Not enough data | 8.5 (26 reviews) | | **Fail over protection** | Not enough data | Not enough data | 8.3 (25 reviews) | | **Reporting** | Not enough data | Not enough data | 8.7 (26 reviews) | | **Auditing** | Not enough data | Not enough data | 8.5 (26 reviews) | | **Third Party Web Services support** | Not enough data | Not enough data | 8.5 (24 reviews) | ### Web Application Firewall (WAF) | Product | Score | Reviews | |---|---|---| | **Azure Web Application Firewall** | 8.4/10 | 9 | | **NetScaler** | N/A | N/A | | **Zscaler Private Access** | N/A | N/A | #### Analysis | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Logging and Reporting** | 8.8 (8 reviews) | Not enough data | Not enough data | | **Issue Tracking** | 8.1 (8 reviews) | Not enough data | Not enough data | | **Security Monitoring** | 8.5 (9 reviews) | Not enough data | Not enough data | #### Controls | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Application-Layer Controls ** | 8.0 (9 reviews) | Not enough data | Not enough data | | **Traffic Controls** | 8.1 (9 reviews) | Not enough data | Not enough data | | **Network Controls** | 8.3 (8 reviews) | Not enough data | Not enough data | #### Functionality | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **API / Integrations** | 8.8 (8 reviews) | Not enough data | Not enough data | | **Extensibility** | 8.6 (7 reviews) | Not enough data | Not enough data | | **Bot Traffic** | Not enough data | Not enough data | Not enough data | #### Generative AI | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **AI Text Summarization** | Not enough data | Not enough data | Not enough data | ### Container Security | Product | Score | Reviews | |---|---|---| | **Azure Web Application Firewall** | N/A | N/A | | **NetScaler** | N/A | N/A | | **Zscaler Private Access** | N/A | N/A | #### Administration | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Risk Scoring** | Not enough data | Not enough data | Not enough data | | **Secrets Management** | Not enough data | Not enough data | Not enough data | | **Security Auditing** | Not enough data | Not enough data | Not enough data | | **Configuration Management** | Not enough data | Not enough data | Not enough data | #### Monitoring | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Continuous Image Assurance** | Not enough data | Not enough data | Not enough data | | **Behavior Monitoring** | Not enough data | Not enough data | Not enough data | | **Observability** | Not enough data | Not enough data | Not enough data | #### Protection | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Dynamic Image Scanning** | Not enough data | Not enough data | Not enough data | | **Runtime Protection** | Not enough data | Not enough data | Not enough data | | **Workload Protection** | Not enough data | Not enough data | Not enough data | | **Network Segmentation** | Not enough data | Not enough data | Not enough data | ### Zero Trust Networking | Product | Score | Reviews | |---|---|---| | **Azure Web Application Firewall** | N/A | N/A | | **NetScaler** | N/A | N/A | | **Zscaler Private Access** | 8.8/10 | 77 | #### Network Management | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Network Segmentation** | Not enough data | Not enough data | 8.9 (64 reviews) | | **Network Mapping** | Not enough data | Not enough data | 8.7 (65 reviews) | | **Security Analytics** | Not enough data | Not enough data | 9.1 (63 reviews) | | **API/Integrations** | Not enough data | Not enough data | 8.5 (63 reviews) | #### Security | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Security Automation** | Not enough data | Not enough data | 9.1 (65 reviews) | | **Application Security** | Not enough data | Not enough data | 9.3 (70 reviews) | | **Workload Protection** | Not enough data | Not enough data | 8.6 (61 reviews) | | **Data Protection** | Not enough data | Not enough data | 9.3 (65 reviews) | #### Identity Management | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Adaptive Access Control** | Not enough data | Not enough data | 9.0 (64 reviews) | | **Identity Scoring** | Not enough data | Not enough data | 9.0 (61 reviews) | | **User Monitoring** | Not enough data | Not enough data | 9.0 (64 reviews) | #### Generative AI | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **AI Text Summarization** | Not enough data | Not enough data | 7.9 (39 reviews) | | **AI Text Generation** | Not enough data | Not enough data | 7.9 (40 reviews) | ### Cloud Edge Security | Product | Score | Reviews | |---|---|---| | **Azure Web Application Firewall** | N/A | N/A | | **NetScaler** | N/A | N/A | | **Zscaler Private Access** | N/A | N/A | #### Management | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Multicloud Management** | Not enough data | Not enough data | Not enough data | | **DLP Configuration** | Not enough data | Not enough data | Not enough data | | **Dynamic Scaling** | Not enough data | Not enough data | Not enough data | | **Policy Enforcement** | Not enough data | Not enough data | Not enough data | #### Monitoring | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Data Center Networking** | Not enough data | Not enough data | Not enough data | | **Multicloud Visibility** | Not enough data | Not enough data | Not enough data | | **Anomaly Detection** | Not enough data | Not enough data | Not enough data | #### Protection | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Firewall-as-a-Service** | Not enough data | Not enough data | Not enough data | | **Cloud Application Brokerage** | Not enough data | Not enough data | Not enough data | | **Web Gateway** | Not enough data | Not enough data | Not enough data | | **Adaptive Access Control** | Not enough data | Not enough data | Not enough data | ### Load Balancing | Product | Score | Reviews | |---|---|---| | **Azure Web Application Firewall** | N/A | N/A | | **NetScaler** | N/A | N/A | | **Zscaler Private Access** | N/A | N/A | #### Usability - Load Balancing | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **User Interface Design** | Not enough data | Not enough data | Not enough data | | **Setup Simplicity** | Not enough data | Not enough data | Not enough data | | **Platform Integration** | Not enough data | Not enough data | Not enough data | | **Container Support** | Not enough data | Not enough data | Not enough data | #### Performance Optimization - Load Balancing | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Global Load Balancing** | Not enough data | Not enough data | Not enough data | | **Dynamic Resource Allocation** | Not enough data | Not enough data | Not enough data | | **Server Health Monitoring** | Not enough data | Not enough data | Not enough data | | **Disaster Recovery** | Not enough data | Not enough data | Not enough data | #### Security & Compliance - Load Balancing | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **SSL/TLS Termination** | Not enough data | Not enough data | Not enough data | | **Application Firewall Integration** | Not enough data | Not enough data | Not enough data | | **DDoS Mitigation** | Not enough data | Not enough data | Not enough data | | **Access Control** | Not enough data | Not enough data | Not enough data | | **IP Whitelisting/Blacklisting** | Not enough data | Not enough data | Not enough data | ### Secure Access Service Edge (SASE) Platforms | Product | Score | Reviews | |---|---|---| | **Azure Web Application Firewall** | N/A | N/A | | **NetScaler** | N/A | N/A | | **Zscaler Private Access** | N/A | N/A | #### Components - Secure Access Service Edge (SASE) | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Zero Trust Network Access (ZTNA)** | Not enough data | Not enough data | Not enough data | | **Wide Area Network (WAN)** | Not enough data | Not enough data | Not enough data | | **Cloud Access Security Broker (CASB)** | Not enough data | Not enough data | Not enough data | | **Secure Web Gateway (SWG)** | Not enough data | Not enough data | Not enough data | | **Firewall as a Service** | Not enough data | Not enough data | Not enough data | #### Artificial Intelligence - Secure Access Service Edge (SASE) | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Predictive Capabilities** | Not enough data | Not enough data | Not enough data | | **Real-Time Threat Detection** | Not enough data | Not enough data | Not enough data | | **Automation** | Not enough data | Not enough data | Not enough data | #### Agentic AI - Secure Access Service Edge (SASE) Platforms | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | | **Cross-system Integration** | Not enough data | Not enough data | Not enough data | | **Proactive Assistance** | Not enough data | Not enough data | Not enough data | | **Decision Making** | Not enough data | Not enough data | Not enough data | ### Cloud Security | Product | Score | Reviews | |---|---|---| | **Azure Web Application Firewall** | N/A | N/A | | **NetScaler** | N/A | N/A | | **Zscaler Private Access** | N/A | N/A | #### Cloud Visibility | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Data Discovery** | Not enough data | Not enough data | Not enough data | | **Cloud Registry** | Not enough data | Not enough data | Not enough data | | **Cloud Gap Analytics** | Not enough data | Not enough data | Not enough data | #### Security | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Data Security** | Not enough data | Not enough data | Not enough data | | **Data loss Prevention** | Not enough data | Not enough data | Not enough data | | **Security Auditing** | Not enough data | Not enough data | Not enough data | #### Identity | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **SSO** | Not enough data | Not enough data | Not enough data | | **Governance** | Not enough data | Not enough data | Not enough data | | **User Analytics** | Not enough data | Not enough data | Not enough data | ### Business VPN | Product | Score | Reviews | |---|---|---| | **Azure Web Application Firewall** | N/A | N/A | | **NetScaler** | N/A | N/A | | **Zscaler Private Access** | N/A | N/A | #### Usage | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Multi-Device Usage** | Not enough data | Not enough data | Not enough data | | **Multiple Concurrent Connections** | Not enough data | Not enough data | Not enough data | | **Protocol Choices** | Not enough data | Not enough data | Not enough data | | **Unlimited Bandwidth** | Not enough data | Not enough data | Not enough data | | **No Log Storage** | Not enough data | Not enough data | Not enough data | | **Varied Server Locations** | Not enough data | Not enough data | Not enough data | | **Unlimited Server Switches** | Not enough data | Not enough data | Not enough data | #### Miscellaneous | Feature | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Live Customer Support** | Not enough data | Not enough data | Not enough data | | **Open Source Code** | Not enough data | Not enough data | Not enough data | | **Multiple Payment Methods** | Not enough data | Not enough data | Not enough data | --- ## Categories **Unique to Azure Web Application Firewall (1):** [Web Application Firewalls (WAF)](https://www.g2.com/categories/web-application-firewall-waf) **Unique to NetScaler (5):** [Zero Trust Networking Software](https://www.g2.com/categories/zero-trust-networking), [Container Security Tools](https://www.g2.com/categories/container-security-tools), [Web Application Firewalls (WAF)](https://www.g2.com/categories/web-application-firewall-waf), [Load Balancing Software](https://www.g2.com/categories/load-balancing), [Container Networking Software](https://www.g2.com/categories/container-networking) **Unique to Zscaler Private Access (5):** [Zero Trust Networking Software](https://www.g2.com/categories/zero-trust-networking), [Business VPN Software](https://www.g2.com/categories/business-vpn), [Single Sign-On (SSO) Solutions](https://www.g2.com/categories/single-sign-on-sso), [Cloud Edge Security Software](https://www.g2.com/categories/cloud-edge-security), [Secure Access Service Edge (SASE) Platforms](https://www.g2.com/categories/secure-access-service-edge-sase-platforms) --- ## Reviewer Demographics ### By Company Size | Segment | Azure Web Application Firewall | NetScaler | Zscaler Private Access | |---|---|---|---| | **Small-Business** | 23.3% | 8.8% | 19.7% | | **Mid-Market** | 40.0% | 28.7% | 33.3% | | **Enterprise** | 36.7% | 62.5% | 47.0% | ### By Industry #### Azure Web Application Firewall - **Information Technology and Services:** 38.7% - **Computer Software:** 12.9% - **Education Management:** 9.7% - **Computer & Network Security:** 9.7% - **Information Services:** 6.5% - **Banking:** 6.5% - **Utilities:** 3.2% - **Financial Services:** 3.2% - **E-Learning:** 3.2% - **Architecture & Planning:** 3.2% - **Other:** 3.2% #### NetScaler - **Hospital & Health Care:** 13.8% - **Information Technology and Services:** 13.8% - **Financial Services:** 7.5% - **Banking:** 5.0% - **Automotive:** 3.8% - **Computer & Network Security:** 3.8% - **Computer Software:** 3.8% - **Oil & Energy:** 3.8% - **Pharmaceuticals:** 3.8% - **Logistics and Supply Chain:** 2.5% - **Other:** 38.8% #### Zscaler Private Access - **Information Technology and Services:** 23.5% - **Computer Software:** 12.2% - **Financial Services:** 8.7% - **Computer & Network Security:** 7.8% - **Telecommunications:** 5.2% - **Marketing and Advertising:** 4.3% - **Computer Networking:** 3.5% - **Hospital & Health Care:** 3.5% - **Insurance:** 2.6% - **Banking:** 2.6% - **Other:** 26.1% --- ## Alternatives ### Alternatives to Azure Web Application Firewall - [Cloudflare Application Security and Performance](https://www.g2.com/products/cloudflare-application-security-and-performance/reviews) — 4.5/5 stars (601 reviews) - [HAProxy](https://www.g2.com/products/haproxy/reviews) — 4.7/5 stars (900 reviews) - [AWS WAF](https://www.g2.com/products/aws-waf/reviews) — 4.3/5 stars (72 reviews) - [Imperva Web Application Firewall (WAF)](https://www.g2.com/products/imperva-web-application-firewall-waf/reviews) — 4.7/5 stars (41 reviews) - [F5 Distributed Cloud WAF](https://www.g2.com/products/f5-distributed-cloud-waf/reviews) — 4.4/5 stars (10 reviews) - [F5 NGINX](https://www.g2.com/products/f5-nginx/reviews) — 4.6/5 stars (107 reviews) - [F5 BIG-IP Advanced Web Application Firewall (Advanced WAF)](https://www.g2.com/products/f5-big-ip-advanced-web-application-firewall-advanced-waf/reviews) — 4.6/5 stars (24 reviews) - [Radware Cloud WAF](https://www.g2.com/products/radware-cloud-waf/reviews) — 4.6/5 stars (135 reviews) - [Sucuri](https://www.g2.com/products/sucuri/reviews) — 3.3/5 stars (48 reviews) - [FortiAppSec Cloud](https://www.g2.com/products/fortiappsec-cloud/reviews) — 4.4/5 stars (31 reviews) ### Alternatives to NetScaler - [HAProxy](https://www.g2.com/products/haproxy/reviews) — 4.7/5 stars (900 reviews) - [Azure Application Gateway](https://www.g2.com/products/azure-application-gateway/reviews) — 4.4/5 stars (160 reviews) - [F5 NGINX](https://www.g2.com/products/f5-nginx/reviews) — 4.6/5 stars (107 reviews) - [Cloudflare Application Security and Performance](https://www.g2.com/products/cloudflare-application-security-and-performance/reviews) — 4.5/5 stars (601 reviews) - [Hostwinds](https://www.g2.com/products/hostwinds/reviews) — 4.9/5 stars (438 reviews) - [Cisco Duo](https://www.g2.com/products/cisco-duo/reviews) — 4.5/5 stars (514 reviews) - [Okta](https://www.g2.com/products/okta/reviews) — 4.5/5 stars (1226 reviews) - [Wiz](https://www.g2.com/products/wiz-wiz/reviews) — 4.7/5 stars (792 reviews) - [Check Point Next Generation Firewalls (NGFWs)](https://www.g2.com/products/check-point-next-generation-firewalls-ngfws/reviews) — 4.5/5 stars (583 reviews) - [BetterCloud](https://www.g2.com/products/bettercloud/reviews) — 4.4/5 stars (482 reviews) ### Alternatives to Zscaler Private Access - [Twingate](https://www.g2.com/products/twingate/reviews) — 4.7/5 stars (76 reviews) - [Microsoft Entra ID](https://www.g2.com/products/microsoft-entra-id/reviews) — 4.5/5 stars (909 reviews) - [Okta](https://www.g2.com/products/okta/reviews) — 4.5/5 stars (1226 reviews) - [JumpCloud](https://www.g2.com/products/jumpcloud/reviews) — 4.5/5 stars (3967 reviews) - [Cisco Duo](https://www.g2.com/products/cisco-duo/reviews) — 4.5/5 stars (514 reviews) - [Check Point SASE](https://www.g2.com/products/check-point-sase/reviews) — 4.5/5 stars (215 reviews) - [Keeper Password Manager](https://www.g2.com/products/keeper-password-manager/reviews) — 4.6/5 stars (1196 reviews) - [BetterCloud](https://www.g2.com/products/bettercloud/reviews) — 4.4/5 stars (482 reviews) - [ThreatLocker Allowlisting](https://www.g2.com/products/threatlocker-allowlisting/reviews) — 4.8/5 stars (474 reviews) - [LastPass](https://www.g2.com/products/lastpass/reviews) — 4.5/5 stars (2044 reviews) --- ## Top Discussions ### Azure Web Application Firewall - Title: [Do Azure web apps have firewall?](https://www.g2.com/discussions/do-azure-web-apps-have-firewall) — 1 comment > **Top comment:** "in Networking options it's we can consider it as firewall there is Inbound Traffic and Outbound Traffic" - Title: [Which Azure service provides the Web application firewall functionality?](https://www.g2.com/discussions/which-azure-service-provides-the-web-application-firewall-functionality) — 1 comment > **Top comment:** "azure storage" ### NetScaler - Title: [Is Citrix ADC the same as NetScaler?](https://www.g2.com/discussions/is-citrix-adc-the-same-as-netscaler) — 3 comments > **Top comment:** "Yes, Citrix ADC is the same as NetScaler. Here's why we went back to original NetScaler name: https://www.citrix.com/blogs/2022/10/03/netscaler-is-back/" - Title: [What operating system is Citrix ADC?](https://www.g2.com/discussions/what-operating-system-is-citrix-adc) — 2 comments > **Top comment:** "Free BSD" ### Zscaler Private Access - Title: [What does zscaler software do?](https://www.g2.com/discussions/zscaler-private-access-what-does-zscaler-software-do) — 1 comment > **Top comment:** "Used as VPN to secure internal network and used for cloud security " - Title: [What is private access zscaler?](https://www.g2.com/discussions/what-is-private-access-zscaler) — 1 comment > **Top comment:** "In Simple form, its sort of VPN connectivity but provide access to only application which user requires and secondly it is controlled by access policy..." --- **Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/azure-web-application-firewall-vs-netscaler-vs-zscaler-private-access)