Highly protected IP addresses can provide high performance and high security to ensure user experience, especially when mobile terminals occupy a large proportion of access. Therefore, it is crucial to optimize the configuration policy of highly protected IP addresses. High-defense IP addresses are used to defend against malicious traffic such as DDoS attacks and CC attacks to ensure the stable running of websites or applications. However, the defense policy of high IP address overload may affect normal access requests. Take into account the features of mobile terminals when configuring high-defense IP addresses.

High defense IP addresses must have strong DDoS cleaning capabilities, including defense against SYN Flood, UDP Flood, and HTTP Flood attacks. When selecting the right high defense service provider, focus on its cleaning capabilities, bandwidth carrying capacity, and global distribution. For mobile users, the network environment is complex, and they may frequently switch base stations or use different operators. Therefore, high-defense IP needs intelligent scheduling function, which can automatically select the best return path according to the geographical location and network type of users.

When deploying high-defense IP addresses, you need to properly configure traffic source return policies. Generally speaking, the high-security IP server will return normal traffic to the source station. Therefore, in a multi-node architecture, BGP Anycast technology or intelligent DNS resolution should be used to ensure that users can connect to the nearest high-security node, reducing latency and improving access speed. In addition, a site-wide acceleration solution, such as a CDN + high-security IP model, can be used to distribute static resources to edge nodes while protecting dynamic requests with high-security IP to optimize the mobile access experience.

Web Application Firewall (WAF) is an essential component of a specific protection strategy. WAF can be used to defend against common Web attacks such as SQL injection, XSS, and malicious crawlers, but too strict WAF rules may affect the normal access of mobile users. For example, some mobile applications may nest WebView call apis, and if the WAF rules are too sensitive, they may misjudge and block legitimate requests. Therefore, when configuring WAF, configure differentiated security policies for different terminal devices, user-agent (UA), and Referer based on User behavior analysis.

HTTPS is also an important means to improve the mobile access experience. High-security IP should support HTTPS transmissions to encrypt data, prevent man-in-the-middle attacks, and optimize TLS handshakes to reduce latency. In terms of HTTPS certificate management, you can use automated certificate updates or use specialized TLS acceleration schemes such as the QUIC protocol to improve access fluency on mobile.

In addition, high-defense IP needs to support WebSocket and HTTP/2 to optimize the interaction experience. WebSocket can be used for real-time communication applications, such as online customer service and message push, while HTTP/2 can improve page loading speed and reduce the number of resource requests on mobile terminals. High-defense IP addresses ensure that these protocols are not blocked by mistake when traffic is being cleaned, and provide flexible connection retention policies to reduce connection interruption caused by network fluctuations.

In terms of mobile access optimization, it is also necessary to consider the problem of user IP change. Due to the NAT mechanism of the mobile network, the IP address of the same user may change frequently. Therefore, a high-defense policy cannot block users simply based on the IP address. Instead, a comprehensive judgment should be made based on fingerprint identification, cookies, and Header information. For example, you can use JavaScript code to generate device fingerprints on the front end and match them on the server side to ensure that normal users are not accidentally blocked.

The cache policy configuration also affects the mobile experience. On a high-defense IP server, you can configure an intelligent cache policy to cache static resources (such as images, JS, and CSS) for a long period of time, and to cache dynamic requests for a short period of time or a loopback mechanism. During CDN configuration, differentiated cache policies are provided for different device types (such as Android and iOS) to improve the access speed of mobile users.

You are advised to use the API Gateway to manage interface requests on the APP. At the high IP defense level, you can set a Rate Limit for API interfaces to prevent malicious requests from bringing down the server, and provide intelligent traffic scheduling so that API requests can be routed to the optimal node as much as possible. In addition, for interface requests with OAuth or Token authentication, a dynamic IP reputation scoring system can be configured to distinguish between malicious access and normal users.

Log analysis and monitoring are also important components of high-defense IP configuration. You can use ELK (Elasticsearch, Logstash, Kibana) or Prometheus + Grafana for real-time traffic monitoring, analyzing access across geography-specific operators, and optimizing for mobile user behavior patterns. For example, if the access latency of a region is high, add high-defense nodes to the region or optimize the DNS resolution policy.

After the high-defense IP address is configured, perform a stress test and a user experience test. You can use tools such as Apache JMeter, Locust, or Tsung to simulate traffic in different scenarios and evaluate the effectiveness of the high-defense strategy. In addition, real users can be invited to participate in the test, collect feedback data, and further optimize the mobile access experience.