TCP/IP Device Filter

Evomi Residential Proxies offer a TCP/IP device filtering feature that allows you to select IPs based on their TCP fingerprint. This helps simulate traffic from specific device types, which is particularly useful for testing platform-specific behavior or avoiding detection.

How TCP Fingerprinting Works

The TCP fingerprint is determined by analyzing characteristics of the device’s TCP/IP stack, including:

• TCP window size
• Initial packet sequence numbers
• TCP options and their order
• Time-to-Live (TTL) values

These characteristics vary between operating systems and device types. For example, Windows devices have different default TCP configurations than Unix-based systems or Apple devices.

Using the Device Filter

Append _device-<type> to your proxy password to filter IPs by device type. Valid options:

• _device-windows: Filters IPs with Windows TCP fingerprints
• _device-unix: Filters IPs from Unix-based systems (Linux/Android)
• _device-apple: Filters IPs from Apple devices (iOS/macOS)

Examples

Below are implementation examples using CURL, Python, and JavaScript:

curl -x http://testuser:[email protected]:1000 https://ip.evomi.com/s

import requests

proxies = {
"http": "http://testuser:[email protected]:1000",
}
response = requests.get("https://ip.evomi.com/s", proxies=proxies)
print(response.text)

const fetch = require('node-fetch');

const proxyUrl = 'http://testuser:[email protected]:1000';
const url = 'https://ip.evomi.com/s';

fetch(url, { proxy: proxyUrl })
.then(res => res.text())
.then(body => console.log(body));