Свой прокси-сервер на VPS: установка 3proxy и проверка

ssh root@SERVER_IP

cat > install-proxy.sh <<'SCRIPT'
#!/usr/bin/env bash
# Installs 3proxy with HTTP and SOCKS5, login and password required.
# Ubuntu 22.04+ or Debian 12+. Run as root on a clean server.
set -euo pipefail

VERSION="1.0.2"
CONF_DIR="/usr/local/3proxy/conf"

if [ "$(id -u)" -ne 0 ]; then
  echo "Run as root: sudo bash install-proxy.sh"
  exit 1
fi

case "$(dpkg --print-architecture)" in
  amd64) ARCH="x86_64"; SHA="d42c0a15ab7bc2e129de2e72fedfb6c908bfc1f7b7f4be15368c56eeb21e9a08" ;;
  arm64) ARCH="arm64";  SHA="e7b8f21bc527b30e9b7fd2ebd5889a11eb14889bb45f71074c94c865fc1b2556" ;;
  *) echo "Only amd64 and arm64 servers are supported"; exit 1 ;;
esac

echo "==> Installing packages"
export DEBIAN_FRONTEND=noninteractive NEEDRESTART_SUSPEND=1
APT="apt-get -o DPkg::Lock::Timeout=300"
$APT update -qq
$APT install -y -qq curl openssl ca-certificates >/dev/null

DEB="/tmp/3proxy-$VERSION.$ARCH.deb"
curl -fsSL -o "$DEB" "https://github.com/3proxy/3proxy/releases/download/$VERSION/3proxy-$VERSION.$ARCH.deb"
echo "$SHA  $DEB" | sha256sum -c --quiet -
$APT install -y -qq "$DEB" >/dev/null
rm -f "$DEB"

echo "==> Creating login, password and ports"
LOGIN="user$(openssl rand -hex 3)"
PASS="$(openssl rand -hex 12)"
HTTP_PORT="$(shuf -i 20000-59999 -n 1)"
SOCKS_PORT="$((HTTP_PORT + 1))"

echo "$LOGIN:CL:$PASS" > "$CONF_DIR/passwd"

cat > "$CONF_DIR/3proxy.cfg" <<EOF
nscache 65536
nserver 1.1.1.1
nserver 8.8.8.8
log /logs/3proxy.log D
rotate 7
maxconn 200
users \$/conf/passwd
auth strong
deny * * 127.0.0.0/8,10.0.0.0/8,172.16.0.0/12,192.168.0.0/16,169.254.0.0/16,100.64.0.0/10
deny * * * 25
allow *
proxy -a -p$HTTP_PORT
socks -p$SOCKS_PORT
EOF

chown proxy:proxy "$CONF_DIR/passwd" "$CONF_DIR/3proxy.cfg"
chmod 640 "$CONF_DIR/passwd" "$CONF_DIR/3proxy.cfg"

if command -v ufw >/dev/null && ufw status | grep -q "Status: active"; then
  echo "==> Opening ports in ufw"
  ufw allow "$HTTP_PORT/tcp" >/dev/null
  ufw allow "$SOCKS_PORT/tcp" >/dev/null
fi

echo "==> Starting the service"
systemctl enable 3proxy >/dev/null 2>&1
systemctl restart 3proxy
sleep 2

if ! systemctl is-active --quiet 3proxy; then
  echo "3proxy did not start. Details: journalctl -u 3proxy -n 30"
  exit 1
fi

SERVER_IP=""
for URL in https://ifconfig.me https://api.ipify.org; do
  SERVER_IP="$(curl -s --max-time 20 -x "http://$LOGIN:$PASS@127.0.0.1:$HTTP_PORT" "$URL" || true)"
  [ -n "$SERVER_IP" ] && break
done

if [ -z "$SERVER_IP" ]; then
  echo "The proxy runs but its test request failed. Details: tail /usr/local/3proxy/logs/3proxy.log.*"
  exit 1
fi

umask 077
cat > /root/proxy.txt <<EOF
Server:     $SERVER_IP
HTTP port:  $HTTP_PORT
SOCKS port: $SOCKS_PORT
Login:      $LOGIN
Password:   $PASS

curl -x "http://$LOGIN:$PASS@$SERVER_IP:$HTTP_PORT" https://ifconfig.me
curl --socks5-hostname "$LOGIN:$PASS@$SERVER_IP:$SOCKS_PORT" https://ifconfig.me
bash check-proxy.sh $SERVER_IP $HTTP_PORT $SOCKS_PORT $LOGIN $PASS
EOF

echo
echo "Done. These details are saved in /root/proxy.txt"
echo
cat /root/proxy.txt
SCRIPT
bash install-proxy.sh

Done. These details are saved in /root/proxy.txt

Server:     203.0.113.10
HTTP port:  34512
SOCKS port: 34513
Login:      user4f2a9c
Password:   8c1f0e77a2d94b36c5e1a07d

curl -x "http://user4f2a9c:8c1f0e77a2d94b36c5e1a07d@203.0.113.10:34512" https://ifconfig.me
curl --socks5-hostname "user4f2a9c:8c1f0e77a2d94b36c5e1a07d@203.0.113.10:34513" https://ifconfig.me
bash check-proxy.sh 203.0.113.10 34512 34513 user4f2a9c 8c1f0e77a2d94b36c5e1a07d

cat > check-proxy.sh <<'SCRIPT'
#!/usr/bin/env bash
# Usage: bash check-proxy.sh HOST HTTP_PORT SOCKS_PORT LOGIN PASSWORD
# Run it from your own computer: only an outside check shows the real picture.
set -u
if [ "$#" -ne 5 ]; then
  echo "Usage: bash check-proxy.sh HOST HTTP_PORT SOCKS_PORT LOGIN PASSWORD"
  exit 2
fi
HOST="$1"; HTTP_PORT="$2"; SOCKS_PORT="$3"; LOGIN="$4"; PASS="$5"
URL="https://ifconfig.me"
FAILED=0

pass() { echo "[ OK ] $1"; }
fail() { echo "[FAIL] $1"; FAILED=$((FAILED + 1)); }
info() { echo "[INFO] $1"; }

MY_IP=$(curl -4 -s --max-time 10 "$URL" || curl -4 -s --max-time 10 https://api.ipify.org || true)
info "Your own IP: ${MY_IP:-unknown}"

HTTP_IP=$(curl -s --max-time 20 -x "http://$LOGIN:$PASS@$HOST:$HTTP_PORT" "$URL" || true)
if [ -n "$HTTP_IP" ]; then pass "HTTP proxy works, exit IP $HTTP_IP"; else fail "HTTP proxy gave no answer"; fi

SOCKS_IP=$(curl -s --max-time 20 --socks5-hostname "$LOGIN:$PASS@$HOST:$SOCKS_PORT" "$URL" || true)
if [ -n "$SOCKS_IP" ]; then pass "SOCKS5 proxy works, exit IP $SOCKS_IP"; else fail "SOCKS5 proxy gave no answer"; fi

if [ -n "$HTTP_IP" ] && [ "$HTTP_IP" = "$MY_IP" ]; then
  info "Exit IP equals your IP: fine on the server itself, a problem anywhere else"
fi

CODE=$(curl -s --max-time 20 -o /dev/null -w "%{http_code}" -x "http://$HOST:$HTTP_PORT" "http://ifconfig.me" || true)
if [ "$CODE" = "407" ]; then pass "HTTP without login is refused (407)"; else fail "HTTP without login returned $CODE, expected 407"; fi

CODE=$(curl -s --max-time 20 -o /dev/null -w "%{http_code}" -x "http://$LOGIN:wrong-$PASS@$HOST:$HTTP_PORT" "http://ifconfig.me" || true)
if [ "$CODE" = "407" ]; then pass "HTTP with a wrong password is refused (407)"; else fail "HTTP with a wrong password returned $CODE, expected 407"; fi

if [ -n "$SOCKS_IP" ]; then
  if curl -s --max-time 20 -o /dev/null --socks5-hostname "$HOST:$SOCKS_PORT" "$URL"; then
    fail "SOCKS5 lets you in without a login: the proxy is open"
  else
    pass "SOCKS5 without login is refused"
  fi
fi

if [ -n "$MY_IP" ] && [ -n "$HTTP_IP" ] && [ "$HTTP_IP" != "$MY_IP" ]; then
  if curl -s --max-time 20 -x "http://$LOGIN:$PASS@$HOST:$HTTP_PORT" "http://ifconfig.me/all" | grep -qF "$MY_IP"; then
    fail "The site can see your own IP in the proxy headers"
  else
    pass "Your own IP is not visible in the headers"
  fi
fi

echo
if [ "$FAILED" -eq 0 ]; then
  echo "All checks passed."
else
  echo "Failed checks: $FAILED"
  exit 1
fi
SCRIPT

[INFO] Your own IP: 198.51.100.7
[ OK ] HTTP proxy works, exit IP 203.0.113.10
[ OK ] SOCKS5 proxy works, exit IP 203.0.113.10
[ OK ] HTTP without login is refused (407)
[ OK ] HTTP with a wrong password is refused (407)
[ OK ] SOCKS5 without login is refused
[ OK ] Your own IP is not visible in the headers

All checks passed.

curl.exe -x "http://LOGIN:PASSWORD@HOST:HTTP_PORT" https://ifconfig.me
curl.exe --socks5-hostname "LOGIN:PASSWORD@HOST:SOCKS_PORT" https://ifconfig.me

systemctl status 3proxy --no-pager
tail -f "$(ls -t /usr/local/3proxy/logs/* | head -1)"

NEW="$(openssl rand -hex 12)"
sed -i "s/^LOGIN:CL:.*/LOGIN:CL:$NEW/" /usr/local/3proxy/conf/passwd
systemctl restart 3proxy
cat /usr/local/3proxy/conf/passwd

echo "friend:CL:$(openssl rand -hex 12)" >> /usr/local/3proxy/conf/passwd
systemctl restart 3proxy
cat /usr/local/3proxy/conf/passwd

sed -i 's/^allow \*$/allow * YOUR_IP/' /usr/local/3proxy/conf/3proxy.cfg
systemctl restart 3proxy

systemctl disable --now 3proxy
apt-get purge -y 3proxy </dev/null
rm -rf /usr/local/3proxy /etc/3proxy /root/proxy.txt

DEBIAN_FRONTEND=noninteractive apt-get install -y ufw unattended-upgrades </dev/null
printf 'APT::Periodic::Update-Package-Lists "1";\nAPT::Periodic::Unattended-Upgrade "1";\n' > /etc/apt/apt.conf.d/20auto-upgrades
ufw allow 22/tcp
ufw allow HTTP_PORT/tcp
ufw allow SOCKS_PORT/tcp
ufw --force enable