# Array ASF Series Web Application Firewall vs Blackwall GateKeeper: side-by-side comparison (2026)

[Array ASF Series Web Application Firewall](https://cybersectools.com/tools/array-asf-series-web-application-firewall) is a commercial [cloud web application and API protection](https://cybersectools.com/categories/cloud-waap) solution by [Array Networks](https://cybersectools.com/companies/array-networks). [Blackwall GateKeeper](https://cybersectools.com/tools/blackwall-customer-login) is a commercial [cloud web application and API protection](https://cybersectools.com/categories/cloud-waap) solution by [Blackwall](https://cybersectools.com/companies/blackwall). Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best Cloud WAAP Solutions for Business](https://cybersectools.com/shortlists/best-cloud-waap-solutions) picks Cloudflare WAF, Akamai App & API Protector, Imperva Web Application Firewall (WAF) and 3 more.

## Side-by-side comparison

| | Array ASF Series Web Application Firewall | Blackwall GateKeeper |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Cloud Web Application and API Protection | Cloud Web Application and API Protection |
| Verified | No | No |
| Deployment type | Hybrid | On-Premises |
| Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| Company | Array Networks | Blackwall |
| Headquarters | – | – |

### Use cases and capabilities

| | Array ASF Series Web Application Firewall | Blackwall GateKeeper |
|---|---|---|
| DDoS | Yes | Yes |
| SSL | Yes | – |
| WAF | Yes | Yes |
| Web Security | Yes | Yes |
| TLS | – | Yes |
| REST API | – | Yes |

### Core features

**Array ASF Series Web Application Firewall**

10 features listed. Sign in on the page to see them.

**Blackwall GateKeeper**

10 features listed. Sign in on the page to see them.

### Integrations

**Array ASF Series Web Application Firewall**

6 integrations listed. Sign in on the page to see them.

**Blackwall GateKeeper**

9 integrations listed. Sign in on the page to see them.

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [Array ASF Series Web Application Firewall](https://cybersectools.com/tools/array-asf-series-web-application-firewall) fits if you need both cloud and on-premises options.
- [Blackwall GateKeeper](https://cybersectools.com/tools/blackwall-customer-login) fits if you need to run it on your own servers.

## Array ASF Series Web Application Firewall vs Blackwall GateKeeper FAQ

Common questions when comparing Array ASF Series Web Application Firewall vs Blackwall GateKeeper for cloud web application and API protection.

### What is the difference between Array ASF Series Web Application Firewall and Blackwall GateKeeper?

**Array ASF Series Web Application Firewall**: WAF protecting web apps from OWASP Top 10, DDoS, and zero-day attacks. Built by Array Networks.

**Blackwall GateKeeper**: Web security & traffic filtering platform for hosting providers. Built by Blackwall.

The table above shows where their features, integrations, deployment and company size fit differ.

### Who makes Array ASF Series Web Application Firewall and Blackwall GateKeeper?

**Array ASF Series Web Application Firewall** is made by Array Networks. **Blackwall GateKeeper** is made by Blackwall. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Array ASF Series Web Application Firewall a good alternative to Blackwall GateKeeper?

Often, yes. Array ASF Series Web Application Firewall and Blackwall GateKeeper are both Cloud Web Application and API Protection products, and both cover DDoS, WAF, Web Security. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Array ASF Series Web Application Firewall vs PIOLINK WEBFRONT-K](https://cybersectools.com/compare/array-asf-series-web-application-firewall-vs-piolink-webfront-k)
- [Array ASF Series Web Application Firewall vs Myra Application Security](https://cybersectools.com/compare/array-asf-series-web-application-firewall-vs-myra-application-security)
- [Array ASF Series Web Application Firewall vs Cloudflare WAF](https://cybersectools.com/compare/array-asf-series-web-application-firewall-vs-cloudflare-waf)
- [Blackwall GateKeeper vs PIOLINK WEBFRONT-K](https://cybersectools.com/compare/blackwall-customer-login-vs-piolink-webfront-k)
- [Blackwall GateKeeper vs Myra Application Security](https://cybersectools.com/compare/blackwall-customer-login-vs-myra-application-security)
- [Blackwall GateKeeper vs Cloudflare WAF](https://cybersectools.com/compare/blackwall-customer-login-vs-cloudflare-waf)

## Alternatives to each

- [See all Array ASF Series Web Application Firewall alternatives](https://cybersectools.com/alternatives/array-asf-series-web-application-firewall)
- [See all Blackwall GateKeeper alternatives](https://cybersectools.com/alternatives/blackwall-customer-login)

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Source: https://cybersectools.com/compare/array-asf-series-web-application-firewall-vs-blackwall-customer-login

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/array-asf-series-web-application-firewall.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Array ASF Series Web Application Firewall and Blackwall GateKeeper: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md