Socket Firewall

Socket FirewallBlock malicious packages before they reach your machine

Socket Firewall stops supply chain attacks at install time by intercepting package downloads and enforcing security policies in real time on developer machines, in CI pipelines, and across your network.

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$ npm install -g sfw

Why It MattersStop attacks before they execute

Most supply chain defenses focus on remediation after it's already too late. Socket Firewall blocks malicious dependencies before they are ever downloaded or executed.

sfw npm install lodash

Install-time protection
Intercept package downloads and block known malware before it reaches your environment.
Policy-driven enforcement
Define exactly what gets blocked, warned, or allowed based on your organization's security and license policies.
Works across environments
Protect developer machines, CI pipelines, and production builds with the same enforcement model.

Using FirewallHow it works

Socket Firewall acts as a lightweight proxy that evaluates every package request before it is installed.

Intercept package requests
Socket Proxy intercepts your package manager installs and evaluates each package before it reaches your machine.
Evaluate risk instantly
Each package is checked against Socket's threat intelligence, known malware, suspicious behaviors, and policy violations.
Enforce your policy
Packages are allowed, warned, or blocked based on configurable rules before installation via npm.

Powerful FeaturesBuilt for enterprise environments

Socket Firewall Enterprise extends protection with flexible deployment, broader ecosystem coverage, and centralized policy control.

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Secure CI pipelines
Block compromised dependencies in CI pipelines before they are installed.
Flexible deployment
Run as a CLI, integrate as a proxy, or deploy at the network level to protect your entire organization.
Expanded ecosystem support
Works across JavaScript, Python, Rust, and more with Enterprise support for Maven, Ruby, NuGet, and beyond.
Protect developer machines
Stop malicious packages from reaching locally during development.
Custom policies
Control how your organization handles known malware, suspicious packages, and license risks.
Telemetry and visibility
Get deep, organization-wide visibility across every package request, including what was blocked or allowed.

Ecosystem CoverageOne scanner for every language your team writes

Secure your team's dependencies across your stack with Socket. Stop supply chain attacks before they reach production.

npm
Maven
yarn
pnpm
pip
uv
NuGet
Poetry
Cargo
Anaconda
C / C++
PHP
Gradle
RubyGems
Bun
Bundler
C#
Go Modules
F#
Elixir & Erlang
VB
GitHub Actions
sbt
Swift
Dart
Chrome extensions
Hugging Face
OpenVSX
Skills.sh
Julia

- npm
- yarn
- pnpm
- Bun
- pip
- uv
- Poetry
- Anaconda
- Maven
- Gradle
- RubyGems
- Bundler
- NuGet
- C#
- F#
- VB
- sbt
- Cargo
- C / C++
- PHP
- Go Modules
- Elixir & Erlang
- GitHub Actions
- Swift
- Dart
- Chrome extensions
- Hugging Face
- OpenVSX
- Skills.sh
- Julia

Start free. Scale with Enterprise.

Socket Firewall Free provides immediate protection out of the box. Enterprise adds control, visibility, and broader coverage.

Great for solo devs
Free
Instant protection, zero setup
- ConfigurationOut-of-the-box, no config
- Ecosystem supportnpm, Python, and Rust
- DeploymentLocal usage only
- DashboardCLI output only
- Policy ManagementCustom organization policies
Start Free
For large teams
Enterprise
Full control and visibility
- ConfigurationConfigurable policies and allow-lists
- Ecosystem supportAll supported ecosystems
- DeploymentProxy + centralized deployment
- DashboardFull telemetry and search
- Policy ManagementCustom organization policies
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Case StudiesSecurity leaders love Socket

See how we've helped top companies protect their teams from supply chain attacks.

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Socket's real-time threat detection helps strengthen our security posture, even from zero-day supply chain attacks."

[Socket] certainly speeds up the process of adding a new dependency and we have the confidence that it's safe in our infrastructure and doesn't have any sort of 'secret agendas' code in there."