(ج) من خلال بروكسي: كل خيار يهم، مع أمثلة

curl -x http://USER-cc-us:PASS@res.proxy-cyber.com:9000 https://api.ipify.org

# Hostname resolved at the exit (recommended)
curl -x socks5h://USER-cc-de:PASS@res.proxy-cyber.com:9001 https://api.ipify.org

# Hostname resolved locally, then the IP is sent to the proxy (leaks the lookup)
curl -x socks5://USER-cc-de:PASS@res.proxy-cyber.com:9001 https://api.ipify.org

export https_proxy="http://USER-cc-us:PASS@res.proxy-cyber.com:9000"
export http_proxy="$https_proxy"
export no_proxy="localhost,127.0.0.1"
curl https://api.ipify.org   # proxied without -x

curl -v -x http://USER:WRONG@res.proxy-cyber.com:9000 https://api.ipify.org 2>&1 | grep -E "CONNECT|HTTP/1.1 4|HTTP/1.1 5"
# < HTTP/1.1 407 Proxy Authentication Required  -> credentials
# < HTTP/1.1 400 Bad Request                    -> a username parameter is wrong
# < HTTP/1.1 502 Bad Gateway                    -> no exit for that location; widen it

for i in $(seq 1 5); do
  curl -s -x "http://USER-cc-us-sid-run$i-ttl-5m:PASS@res.proxy-cyber.com:9000" https://api.ipify.org
  echo
done   # five different United States exits, each reusable for five minutes under its id