Socket Firewall
Block 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.
$ sfw npm install
Socket Firewall
Scanning dependencies...
Installed 3 packages, blocked 1 threat
Why Socket Firewall?
Stop 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.
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.
How 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 Features
Built for enterprise environments
Socket Firewall Enterprise extends protection with flexible deployment, broader ecosystem coverage, and centralized policy control.
{
"rules": [
{
"action": "block",
"category": "securityPolicy",
"severity": "high"
},
{
"action": "warn",
"category": "vulnerability"
}
],
"ecosystems": [
"npm",
"pypi",
"maven"
],
"telemetry": true
}Protect developer machines
Stop malicious packages from executing locally during development.
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.
Custom policies
Control how your organization handles known malware, suspicious packages, and license risks.
Expanded ecosystem support
Works across JavaScript, Python, Rust, and more with Enterprise support for Maven, Ruby, NuGet, and beyond.
Telemetry and visibility
See every package installation attempt across your organization, including what was blocked or allowed, with machine-level context for investigators.
Start free. Scale with Enterprise.
Socket Firewall Free provides immediate protection out of the box. Enterprise adds control, visibility, and broader coverage.
Free
Instant protection, zero setup
Configuration
Out-of-the-box, no config
Ecosystem support
npm, Python, and Rust
Deployment
Local usage only
Dashboard
CLI output only
Enterprise
Full control and visibility
Configuration
Configurable policies and allow-lists
Ecosystem support
All supported ecosystems
Deployment
Proxy + centralized deployment
Dashboard
Full telemetry and search
Policy management
Custom organization policies
We help security teams work more efficiently
Cut through the noise and focus on real threats.
Get actionable alerts for the supply chain risks that matter. Socket highlights risky dependencies directly within the developer workflow.