Topic Authentication
IP whitelisting for proxies: what it is and how to set it up
What IP whitelisting means for a proxy, which public address the proxy checks, why NAT and IPv6 break it, and what a miss returns. Tested on 10 October 2026.
When Your Proxy Needs a Password and Your Software Can't Send One
Windows has no proxy password field, Chrome ignores a login written into its flag, and some apps only take proxies without one. Four fixes that work, from an address allowlist to a relay on 127.0.0.1.
IP, Port, Username, Password: What Your Proxy Line Actually Means
Someone handed you 198.51.100.7:8080:hp_ir4k2:9fa2c1 and no instructions. The four parts, the three ways the same proxy is written, which shape each tool wants, and the password characters that break it.
Proxies that don't die mid-job
Residential, ISP, datacenter and mobile, verified by the same engine that runs tens of millions of checks. They read as a real device and hold up under load. Pay as you go, and your balance never expires. $0.44/GB is the 2,000 GB+ rate; a single gigabyte is $0.50/GB, with no minimum order.
129M+ proxy checks run · 100+ countries · HTTP / HTTPS / SOCKS · re-checked every few minutes · no signup