如何在Linux服务器上实施强大的Web接口安全性策略？

from flask import Flask
from flask_sslify import SSLify

app = Flask(__name__)
sslify = SSLify(app)

@app.route('/')
def index():
    return 'Hello, World!'

if __name__ == '__main__':
    app.run()

location /api/ {
    allow 192.168.0.0/24;
    deny all;
    proxy_pass http://localhost:8000;
}

from flask import Flask
from flask_httpauth import HTTPBasicAuth

app = Flask(__name__)
auth = HTTPBasicAuth()

users = {
    'admin': 'password'
}

@auth.verify_password
def verify_password(username, password):
    if username in users and password == users[username]:
        return True
    else:
        return False

@app.route('/')
@auth.login_required
def index():
    return 'Hello, authenticated user!'

if __name__ == '__main__':
    app.run()

from flask import Flask, request
import re

app = Flask(__name__)

@app.route('/search')
def search():
    keyword = request.args.get('keyword')
    if not re.match(r'^[a-zA-Z0-9s]+$', keyword):
        return 'Invalid keyword.'
    else:
        # 执行搜索逻辑
        pass

if __name__ == '__main__':
    app.run()