How to Create a Low-Cost DIY 4G Proxy Network > 자유게시판

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Setting up a low-cost cellular proxy network is easier than you think if you're willing to use off-the-shelf hardware and efficient proxy configurations. The goal is to create a system that can cycle across several mobile networks so that each web request appears to come from a different IP address. This is useful for data scraping, social media management, or testing location-based services without getting rate-limited.

Begin with sourcing your equipment. You’ll need several used 4G routers. Look for models like the TP-Link M7350. These are often sold at discount prices on Amazon Renewed because people replace outdated devices. Aim for at least five units to start. You’ll also need a a surge-protected extension cord and a low-latency Ethernet link for your control computer.

Obtain prepaid mobile data cards. Use data-only SIMs from multiple providers if possible. This increases the diversity of your IP pool. You can buy these on AliExpress or SIMCard.com for as low as $3 per card. Make sure they are pure data plans without voice or text plans to keep costs low. Load each with a small monthly data plan, which should be enough for periodic API requests.

Insert a unique SIM into each device and turn them on. Configure each router to use a fixed LAN address so your central server can reliably find and manage them. Most routers have a configuration portal at 192.168.8.1 or similar into a browser. Change the default admin password for http://hackmd.io security.

Now install a proxy rotation tool on your main computer. Polipo is a free open-source proxy server that can be configured to distribute requests across devices. Install it on a Ubuntu server. Configure Squid to route traffic via each LTE gateway. Each router acts as a gateway with its own public IP. You’ll need to set up a upstream server manifest for each router in your Squid config file.

To make rotation automatic, use a a scheduled proxy switcher every few requests. You can write a custom automation script using urllib3 and aiohttp to cycle through the router IPs. Or use a tool like Rotator to handle the load balancing. Test the setup by checking your IP on ipinfo.io and verifying the public IP refreshes reliably.

Keep an eye on data usage. Cellular carriers often detect and restrict proxy behavior. If you notice connection drops, lower your crawl frequency or add additional routers. Avoid rapid-fire automation. Wait at least 10–30 seconds between requests to stay avoid detection.

System care requires little effort. Reboot each router once a week to refresh the cellular connection. If one device loses signal, install a backup router. Keep extra hotspots and data plans on hand. You can expand the network by adding more routers as your funds permit.

This approach offers exceptional value. You can build a small-scale proxy cluster for less than $200 including entire setup costs. It’s not as fast or reliable as premium proxy providers, but it’s fully yours to manage. It’s also a valuable technical challenge if you want to deepen your knowledge of network abstraction and automation.

Adhere to responsible automation practices. Don’t violate privacy laws, violate terms of service, or launch DDoS-style attacks. Use your proxy farm for legitimate testing where you are explicitly authorized. With careful setup, your home-built LTE proxy system can be a versatile automation asset.