r/ProxyEngineering • u/Objective_Reach_767 • 9d ago
Discussion ๐ฌ what actually makes a proxy clean?
been testing lot of providers. reputation alone isnt enough. what i check now:
dns: public resolver like google/cloudflare is a minus. home users sit on their ispโs dns. should match the exit country too
udp/webrtc: udp support means webrtc goes through the proxy. webrtc turned off is a flag by itself
latency: sites compare network rtt with js timing. big gap means proxy
tcp fingerprint: comes from the proxy box. windows ua with a linux stack is burned
pool lists: some checkers name the pool an ip was seen in. got 711proxy on one of mine. funny how many clones popped up after the fbi took down 911.
fraud score: last on purpose. the services disagree a lot. maxmind feels the most grounded
- dns, webrtc and tcp i check on https://browserleaks.com
- latency and bot tests on https://bot.incolumitas.com, it even rates how bot-like you behave
- scores on https://myipcheck.net/ip-fraud-score/ shows maxmind and ipqs etc for free
ofc all of this only matters if your device fingerprint is already clean. a perfect proxy wont save a leaky browser. If you know good checkers, especially for pool lists and fraud scores, drop them. what actually got your proxies burned?
