How does Tencent Cloud High Defense IP defend against network attacks: a "hard core shield" that blocks hacker storms from the computer room"
If you open a business hot online and offline script killing shop (or e-commerce website, game server), what is the most afraid?
It's not that there are no guests, but that the colleagues next door are jealous of you and hire a large group of local ruffians and hooligans to block the door of your store every day. They don't buy tickets or spend, so they leave the door blocked so that customers who really want to enter the store can't even touch the door handle. In the end, your store will be forced to close.
In the online world, this vicious means of competition is called
DDoS attacks (distributed denial of service attacks)
. Those rogues blocking the door are thousands of "broiler" servers controlled by hackers.
In the face of this kind of traffic bombing of tens of g or even T-level, the bandwidth and servers bought by the enterprise itself will be washed away in an instant. At this time, you need to invite a burly professional bodyguard with his own "security super channel--
Tencent Cloud Anti-DDoS IP(Anti-DDoS Advanced)
.
Today, we will use the vernacular, not to talk about the underlying agreement that makes people dizzy, and to talk about how Tengxunyun's high-security IP is behind the scenes with hackers to ensure the safety of the business.
1. change the way of thinking: high defense IP "body double defense"
Before we understand how it defends, we must first understand the working mode of high-security IP.
Many novices are prone to make a mistake: they think that high-security IP is a software that should be installed on their own servers. Actually, that’s not the case. High-security IP uses a "body double defense"
Or called
Traffic Redirection policy.
Its core logic is: hide the real body and launch the double.
Hidden source station: Your real server IP (source station) is closely protected and not disclosed to the public.
Release high-security IP: You analyze the domain name of the website or the connection address of the game client directly to the "high-security IP" given to you by Tengxun Cloud ".
Body double blocking knife: In this way, both normal users and hackers can only see and attack this high-security IP. All the crazy output of hackers is actually bombing Tencent Cloud's super cleaning centers around the world, while your real server is hiding behind and unscathed.
2. Disassembly: How Does Anti-DDoD High IP "Clean" Traffic?
When hundreds of g of mixed traffic (normal traffic malicious attacks) rush to high-security IP like a tsunami, tengxunyun's defense system will open a set of extremely precise "three-step cleaning method".
The first step: large bandwidth of the "hard resistance and shunt" (elastic protection)
Hackers launch DDoS attacks, spelling out whose pipes are thick. If hackers can mobilize 500G of traffic and your defense line is only 200G, the defense line will be paralyzed directly.
Behind Tencent Cloud's high-security IP, it relies on Tencent's top global
Tbps level protection bandwidth
. This is like Tencent widening a super road wider than Chang 'an Avenue in front of your store.
No matter how many hooligans hackers call, they are not satisfied with this road at all.
At the same time, cooperate
Anycast (anycast)
Technology, high-security IP can divert attack traffic from all over the world to Tencent's major cleaning centers in Beijing, Shanghai, Guangzhou or overseas, break up into parts, and divide and conquer.
The second step: intelligent cleaning system of "gold in the sand"
After the flow is introduced, it comes to the part with the highest technical content:
How to accurately find out the rogue in tens of millions of data packets a second and let normal customers pass at the same time?
Tengxunyun self-developed
Aegis Protection System
Will take over at this stage, multi-layer filtration:
Signature matching: Many of the attack tools commonly used by hackers are shoddy, with specific "bad guy tattoos" in the data packets (such as specific characteristic strings). The system can recognize it at a glance and discard it directly.
Behavioral analysis and rebound challenges: Many broiler software will only make requests with one mind and will not handle complex instructions like a real browser. High-security IP will quietly send a "verification challenge" to the other party (similar to the sliding verification code on the web page, but completed at the protocol layer, invisible to the human eye). If it is a normal browser, it can be easily untied and released. If it is a nerd trojan horse that only knows about bombing, it can't match the secret code and pull the black directly.
AI intelligent learning: now the hacker is very smart, will simulate the access habits of normal people. Tengxunyun's AI engine will learn the "work and rest rules" of your business in real time ". If a user taps a web page twice a second at ordinary times and suddenly there is a batch of IP taps 200 times a second, the AI will judge the abnormality and block it decisively.
Step 3: Safe return to the source (pure water)
After the above layers of peeling cleaning, 99.99 percent of the garbage traffic and attack messages have been thrown into the garbage can. The remaining real and clean user requests will be safely sent to your real server through Tengxun Cloud's compliance line intranet.
For your server, although the outside has been broken, artillery fire, but to its hands, is still a cup of warm pure water.
3. is not just DDoS: What can Anti-DDoS Pro prevent?
Many business owners think that I have not offended anyone, and no one will spend a lot of money to hit me with DDoS. But in reality, there is another, more insidious and pervasive attack:
CC attack (Challenge Collapsar)
.
DDoS is purely "fighting the number of people and blocking the gate": relying on traffic to squeeze your bandwidth.
CC attacks are "extreme white whoring, exhausted waiters": hackers don't block doors, he queues tens of thousands of broilers into your store, and everyone asks waiters to ask the most complicated questions (for example, frequently launch high-consumption database searches on your website and constantly refresh the verification code interface).
This kind of attack traffic may be only a few megabytes (M), but it can instantly make your server CPU soar to 100 percent, and the system can fake its death directly.
Tencent Cloud Anti-DDoS IP has built-in advanced
WAF(We
B Application Firewall)
Ability to deal specifically with this seven-layer CC attack. It can protect your server CPU from being burned by limiting the access frequency of a single IP, identifying malicious crawlers, and dynamically inserting verification codes.
4. Pit Avoidance Experience: Several "Real People's Heart Words" with High Defense IP"
As an operation and maintenance or architect, accessing high-security IP does not mean that everything will be fine after buying it. Novice must remember the following lessons of blood and tears in actual combat:
Never disclose "source station IP"! High-security IP can play a protective role, the premise is that hackers only know high-security IP. If the IP of the source station has been exposed before you connect to high-security, or if there are other secondary domain names on your server that do not go to high-security, hackers can directly hit your source station by bypassing high-security. Then your high-security IP will be bought for nothing. Correct approach: When accessing the high-security IP, set "Only allow IP access from the high-security back-to-source segment" in the security group of the cloud server to block all other public network access; Or directly replace a new server internal/external IP.
Note the region and latency: Anti-DDoS Pro adds a layer of forwarding to the cleaning center, which increases the latency more or less (usually between a few milliseconds and ten milliseconds). If your business is in South China, try to choose Guangzhou or Hong Kong when buying high-security IP, and don't choose nodes that are too far away for cheap.
According to the business form, choose "guaranteed" or "flexible": tengxunyun high-security billing is generally "basic protection flexible protection". The basic protection is the guarantee of the web page (for example, the guarantee is 30G), and the excess part is charged by day or by quantity. This combination is the cheapest for businesses that have nothing to do at ordinary times and need to temporarily increase the protection limit only after being beaten occasionally.
5. Conclusion
In the current network ecology, network attacks have become a low-cost black industry chain. Sometimes it's not even because of industry competition, just because hackers itch or want to blackmail, they will pick soft persimmons to pinch.
Tengxunyun's high-security IP actually turns Tencent's top-level security capabilities accumulated over the past 20 years against various black products and hackers into a "out-of-the-box" commodity.
It may seem a little quiet in your bill at ordinary times, but when the black storm really comes, it must be the "network hard core shield" that silently stands at the forefront to block thousands of gunfire for you ".
