# Cobalt Strike's ExternalC2 framework vs RedGuard: side-by-side comparison (2026)

[Cobalt Strike's ExternalC2 framework](https://cybersectools.com/tools/cobalt-strikes-externalc2-framework) is a free [red-team & adversary emulation](https://cybersectools.com/categories/offensive-security) solution. [RedGuard](https://cybersectools.com/tools/redguard) is a free [red-team & adversary emulation](https://cybersectools.com/categories/offensive-security) solution. Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Cobalt Strike's ExternalC2 framework | RedGuard |
|---|---|---|
| Pricing model | Free | Free |
| Category | Red-Team & Adversary Emulation | Red-Team & Adversary Emulation |
| Verified | No | No |
| Deployment type | On-Premises | On-Premises |
| Company size fit | Enterprise | Mid-Market, Enterprise |
| GitHub stars | – | 1,561 |
| Last commit | – | Aug 2024 |

### Use cases and capabilities

| | Cobalt Strike's ExternalC2 framework | RedGuard |
|---|---|---|
| C2 | Yes | Yes |
| Red Team | – | Yes |
| Proxy | – | Yes |
| Open Source | – | Yes |
| Evasion | – | Yes |
| Traffic Filtering | – | Yes |

## Which one fits you

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

- [RedGuard](https://cybersectools.com/tools/redguard) fits if you are a mid-market company and you want an open-source product.

## Cobalt Strike's ExternalC2 framework vs RedGuard FAQ

Common questions when comparing Cobalt Strike's ExternalC2 framework vs RedGuard for red-team & adversary emulation.

### What is the difference between Cobalt Strike's ExternalC2 framework and RedGuard?

**Cobalt Strike's ExternalC2 framework**: A specification/framework for extending default C2 communication channels in Cobalt Strike.

**RedGuard**: RedGuard is a C2 front flow control tool that helps evade detection by security systems through traffic filtering and redirection capabilities.

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

### Is Cobalt Strike's ExternalC2 framework a good alternative to RedGuard?

Often, yes. Cobalt Strike's ExternalC2 framework and RedGuard are both Red-Team & Adversary Emulation products, and both cover C2. Key differences: RedGuard is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Cobalt Strike's ExternalC2 framework vs Core Security Cobalt Strike](https://cybersectools.com/compare/cobalt-strikes-externalc2-framework-vs-core-security-cobalt-strike)
- [Cobalt Strike's ExternalC2 framework vs Core Security Outflank Security Tooling](https://cybersectools.com/compare/cobalt-strikes-externalc2-framework-vs-core-security-outflank-security-tooling)
- [Cobalt Strike's ExternalC2 framework vs Fortra Cobalt Strike](https://cybersectools.com/compare/cobalt-strikes-externalc2-framework-vs-fortra-cobalt-strike)
- [RedGuard vs Core Security Cobalt Strike](https://cybersectools.com/compare/core-security-cobalt-strike-vs-redguard)
- [RedGuard vs Core Security Outflank Security Tooling](https://cybersectools.com/compare/core-security-outflank-security-tooling-vs-redguard)
- [RedGuard vs Fortra Cobalt Strike](https://cybersectools.com/compare/fortra-cobalt-strike-vs-redguard)

## Alternatives to each

- [See all Cobalt Strike's ExternalC2 framework alternatives](https://cybersectools.com/alternatives/cobalt-strikes-externalc2-framework)
- [See all RedGuard alternatives](https://cybersectools.com/alternatives/redguard)

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Source: https://cybersectools.com/compare/cobalt-strikes-externalc2-framework-vs-redguard

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