请重复问这是蜘蛛么？怎么这么闲

Question

{"时间：":"00:47:53","ip：":"157.230.29.20","地址：":"","浏览器：":"Google Chrome","平台：":"Windows","请求：":"/"}
{"时间：":"01:13:47","ip：":"216.180.246.68","地址：":"","浏览器：":"Unknown","平台：":"Unknown","请求：":"/"}
{"时间：":"01:14:12","ip：":"216.180.246.68","地址：":"","浏览器：":"Unknown","平台：":"Unknown","请求：":"/"}
{"时间：":"01:22:44","ip：":"157.230.29.20","地址：":"","浏览器：":"Google Chrome","平台：":"Windows","请求：":"/"}
{"时间：":"02:05:24","ip：":"49.51.196.42","地址：":"上海市上海市","浏览器：":"Apple Safari","平台：":"Mac","请求：":"/"}
{"时间：":"02:06:28","ip：":"129.211.166.123","地址：":"北京市北京市","浏览器：":"Apple Safari","平台：":"Mac","请求：":"/"}
{"时间：":"02:06:51","ip：":"129.211.163.253","地址：":"北京市北京市","浏览器：":"Apple Safari","平台：":"Mac","请求：":"/"}
{"时间：":"02:07:01","ip：":"44.212.70.191","地址：":"","浏览器：":"Google Chrome","平台：":"Windows","请求：":"/"}
{"时间：":"02:15:35","ip：":"157.230.29.20","地址：":"","浏览器：":"Google Chrome","平台：":"Windows","请求：":"/"}
{"时间：":"02:25:16","ip：":"104.199.26.108","地址：":"","浏览器：":"Unknown","平台：":"Unknown","请求：":"/"}
{"时间：":"02:36:05","ip：":"66.175.213.4","地址：":"","浏览器：":"Google Chrome","平台：":"Mac","请求：":"/"}
{"时间：":"02:50:59","ip：":"157.230.29.20","地址：":"","浏览器：":"Google Chrome","平台：":"Windows","请求：":"/"}
{"时间：":"03:00:18","ip：":"193.142.147.209","地址：":"","浏览器：":"Unknown","平台：":"Unknown","请求：":"/"}
{"时间：":"03:27:28","ip：":"83.142.209.193","地址：":"","浏览器：":"Unknown","平台：":"Unknown","请求：":"/"}
{"时间：":"03:37:32","ip：":"157.230.29.20","地址：":"","浏览器：":"Google Chrome","平台：":"Windows","请求：":"/"}
{"时间：":"04:16:09","ip：":"157.230.29.20","地址：":"","浏览器：":"Google Chrome","平台：":"Windows","请求：":"/"}
{"时间：":"04:26:52","ip：":"180.101.244.14","地址：":"江苏省南京市","浏览器：":"Google Chrome","平台：":"Windows","请求：":"/"}
{"时间：":"04:37:23","ip：":"172.236.228.220","地址：":"","浏览器：":"Google Chrome","平台：":"Mac","请求：":"/"}
{"时间：":"04:47:23","ip：":"220.196.160.124","地址：":"江苏省常州市","浏览器：":"Google Chrome","平台：":"Mac","请求：":"/"}
{"时间：":"04:47:23","ip：":"220.196.160.76","地址：":"江苏省常州市","浏览器：":"Google Chrome","平台：":"Mac","请求：":"/"}
{"时间：":"04:47:31","ip：":"220.196.160.154","地址：":"江苏省常州市","浏览器：":"Google Chrome","平台：":"Mac","请求：":"/"}
{"时间：":"04:52:57","ip：":"93.174.93.12","地址：":"","浏览器：":"Apple Safari","平台：":"Mac","请求：":"/"}
{"时间：":"04:55:59","ip：":"205.210.31.218","地址：":"","浏览器：":"Unknown","平台：":"Unknown","请求：":"/"}
{"时间：":"05:14:03","ip：":"157.230.29.20","地址：":"","浏览器：":"Google Chrome","平台：":"Windows","请求：":"/"}
{"时间：":"05:35:10","ip：":"97.117.16.188","地址：":"","浏览器：":"Apple Safari","平台：":"Mac","请求：":"/"}
{"时间：":"05:36:43","ip：":"64.227.76.184","地址：":"","浏览器：":"Mozilla Firefox","平台：":"Windows","请求：":"/"}
{"时间：":"05:54:54","ip：":"157.230.29.20","地址：":"","浏览器：":"Google Chrome","平台：":"Windows","请求：":"/"}
{"时间：":"06:32:12","ip：":"157.230.29.20","地址：":"","浏览器：":"Google Chrome","平台：":"Windows","请求：":"/"}
{"时间：":"07:08:52","ip：":"98.80.4.78","地址：":"","浏览器：":"Google Chrome","平台：":"Windows","请求：":"/"}
{"时间：":"07:11:53","ip：":"157.230.29.20","地址：":"","浏览器：":"Google Chrome","平台：":"Windows","请求：":"/"}

这是网站日志，有很多重复ip访问怎么拒绝这些访问或是防止攻击？

Answer 1

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根据您提供的网站日志分析，这些重复IP访问确实存在异常访问特征。以下是针对这种情况的解决方案：

1. 分析日志特征

从日志中可以看到几个明显的异常模式：

• IP 157.230.29.20 在多个时间段频繁访问
• 多个IP显示为 Unknown 浏览器和平台
• 部分IP在短时间内密集访问

2. 服务器层面防护

Nginx 配置限制

# 在 http 块中定义限制区域
http {
    limit_req_zone $binary_remote_addr zone=one:10m rate=1r/s;
    
    # 在 server 块中应用
    server {
        location / {
            limit_req zone=one burst=5 nodelay;
            # 其他配置...
        }
    }
}

Apache 配置

# 在 .htaccess 或配置文件中
<IfModule mod_evasive20.c>
    DOSHashTableSize 3097
    DOSPageCount 2
    DOSSiteCount 50
    DOSPageInterval 1
    DOSSiteInterval 1
    DOSBlockingPeriod 600
</IfModule>

3. 使用防火墙规则

iptables 防护

# 限制单个IP的连接数
iptables -A INPUT -p tcp --dport 80 -m connlimit --connlimit-above 20 -j DROP


# 限制同一IP在60秒内的新建连接数
iptables -A INPUT -p tcp --dport 80 -m state --state NEW -m recent --set
iptables -A INPUT -p tcp --dport 80 -m state --state NEW -m recent --update --seconds 60 --hitcount 20 -j DROP

4. Web应用防火墙（WAF）

使用 ModSecurity

# 在 Apache 配置中
SecRuleEngine On
SecRule REQUEST_HEADERS:User-Agent "Unknown" "id:1001,deny,status:403,msg:'Suspicious User-Agent'"
SecRule REMOTE_ADDR "@gt 50" "id:1002,phase:1,deny,status:403,msg:'Too many requests from single IP'"

5. 使用 Fail2Ban 自动封禁

Fail2Ban 配置

# /etc/fail2ban/jail.local
[nginx-limit-req]
enabled = true
filter = nginx-limit-req
action = iptables-multiport[name=nginx, port="http,https", protocol=tcp]
logpath = /var/log/nginx/error.log
maxretry = 5
findtime = 600
bantime = 3600

6. CDN 防护

推荐使用 Cloudflare 或其他CDN服务：

• 开启 Under Attack 模式
• 设置防火墙规则拦截可疑IP
• 配置速率限制

7. 应用程序层面防护

PHP 示例

<?php
// IP频率限制
function checkRateLimit($ip, $limit = 10, $timeframe = 60) {
    $key = 'rate_limit_' . $ip;
    $current = apc_fetch($key);
    
    if ($current && $current >= $limit) {
        http_response_code(429);
        die('Too many requests');
    }
    
    apc_store($key, ($current ? $current + 1 : 1), $timeframe);
}


// 使用
checkRateLimit($_SERVER['REMOTE_ADDR']);
?>

8. 监控和日志分析

使用工具持续监控：

# 实时监控访问日志
tail -f /var/log/nginx/access.log | grep -E "(157.230.29.20|216.180.246.68)"


# 统计IP访问次数
awk '{print $1}' /var/log/nginx/access.log | sort | uniq -c | sort -nr

建议实施步骤

1. 立即措施：通过防火墙临时封禁最活跃的异常IP
2. 中期方案：配置Nginx/Apache的速率限制
3. 长期方案：部署WAF和CDN防护
4. 监控：设置自动化监控和告警

这些措施应该能有效减少异常访问对您网站的影响。建议根据实际业务需求调整限制阈值。