How to Migrate Between Proxy Providers

How to Migrate Between Proxy Providers

Introduction

Migrating between proxy providers is a critical process that, if not executed correctly, can lead to account downtime and data loss.

Basic Setup

Migration Planning

1. Audit Current Usage:
   - What types of proxies are used
   - How many IPs, what locations
   - What traffic volume
   - What integrations (API, proxy format)

2. Choosing a New Provider:
   - Test with a small volume
   - Compare success rate, speed, price
   - Check format compatibility

3. Parallel Operation:
   - Run the new provider in parallel with the old one
   - Gradually switch traffic (10% → 30% → 50% → 100%)
   - Monitor metrics at each stage

Risk Minimization

• Do not disable the old provider until the new one is fully verified
• Have a rollback plan to revert to the old provider
• For accounts: do not change IPs abruptly — make a smooth transition

Advanced Configuration

Environment Variables

Most tools support standard environment variables for proxies:
- HTTP_PROXY / http_proxy — proxy for HTTP requests
- HTTPS_PROXY / https_proxy — proxy for HTTPS requests
- NO_PROXY / no_proxy — list of exclusions (addresses that bypass the proxy)
- ALL_PROXY / all_proxy — proxy for all protocols

SSL and Self-Signed Certificates

Corporate proxies often use their own SSL certificates. To work through them, you need to:
1. Obtain the proxy's CA certificate from the administrator
2. Add it to the system certificate store
3. Or disable SSL verification (for testing only)

Authentication

Two main authentication methods are supported:

By username and password — standard HTTP Basic authentication. Credentials are sent with each request. URL format: http://user:pass@proxy_ip:port

By IP address (whitelist) — your IP is added to a whitelist. No credentials need to be sent.

Verification

After configuration, verify:
1. Execute a test request through the proxy
2. Ensure the IP has changed
3. Check connection speed
4. Ensure there are no DNS leaks

Troubleshooting

Proxy Not Connecting

• Check the address and port for correctness
• Ensure your firewall is not blocking the connection
• Check proxy accessibility from your network

SSL Errors

• For corporate proxies, add the CA certificate
• For testing — temporarily disable SSL verification
• Update SSL libraries to the latest version

Authentication Errors

• Check username and password
• Ensure credentials are in the correct format
• Try encoding special characters in the password (URL encoding)

Best Practices

1. Use environment variables — for flexibility and security
2. Do not hardcode credentials — use environment variables or configuration files
3. Configure exclusions — do not proxy localhost and internal addresses
4. Document settings — in the project README or team wiki
5. Test after changes — any configuration change requires verification

Conclusion

Correct proxy configuration ensures stable tool operation and secure connections. Follow the recommendations in this guide and always verify functionality after setup.