Enterprise network configuration
Configure Claude Code for enterprise environments with proxy servers, custom Certificate Authorities (CA), and mutual Transport Layer Security (mTLS) authentication.
Claude Code supports various enterprise network and security configurations through environment variables. This includes routing traffic through corporate proxy servers, trusting custom Certificate Authorities (CA), and authenticating with mutual Transport Layer Security (mTLS) certificates for enhanced security.
Proxy configuration
Environment variables
Claude Code respects standard proxy environment variables:
# HTTPS proxy (recommended)
export HTTPS_PROXY=https://proxy.example.com:8080
# HTTP proxy (if HTTPS not available)
export HTTP_PROXY=http://proxy.example.com:8080
# Bypass proxy for specific requests - space-separated format
export NO_PROXY="localhost 192.168.1.1 example.com .example.com"
# Bypass proxy for specific requests - comma-separated format
export NO_PROXY="localhost,192.168.1.1,example.com,.example.com"
# Bypass proxy for all requests
export NO_PROXY="*"
Basic authentication
If your proxy requires basic authentication, include credentials in the proxy URL:
export HTTPS_PROXY=http://username:password@proxy.example.com:8080
Custom CA certificates
If your enterprise environment uses custom CAs for HTTPS connections (whether through a proxy or direct API access), configure Claude Code to trust them:
export NODE_EXTRA_CA_CERTS=/path/to/ca-cert.pem
mTLS authentication
For enterprise environments requiring client certificate authentication:
# Client certificate for authentication
export CLAUDE_CODE_CLIENT_CERT=/path/to/client-cert.pem
# Client private key
export CLAUDE_CODE_CLIENT_KEY=/path/to/client-key.pem
# Optional: Passphrase for encrypted private key
export CLAUDE_CODE_CLIENT_KEY_PASSPHRASE="your-passphrase"
Network access requirements
Claude Code requires access to the following URLs:
api.anthropic.com- Claude API endpointsclaude.ai- WebFetch safeguardsstatsig.anthropic.com- Telemetry and metricssentry.io- Error reporting
Ensure these URLs are allowlisted in your proxy configuration and firewall rules. This is especially important when using Claude Code in containerized or restricted network environments.