how to prevent ddos attacks

C # How to Prevent replay attacks, Replay attacks A replay attack means that hackers capture packets to obtain client request data and request connections, repeatedly sending requests to the server. For example, you have a "buy" operation. When you click the Buy button, you can send a purchase request to the server. At this time, the hacker captured your request

I have summarized three methods to prevent ARP attacks in Linux: directly binding the gateway method, using related software such as Libnet and arpoison, and using arptables to prevent arp attacks, finally, I wrote the shell script myself. Let's take a look at it. Method 1: bind a gateway Generally, the gateway of the

-LINK TL-R4148 for the special Broadband Router is introduced as an example, how to prevent ARP attacks:If the "IP and MAC Address binding" function is available on the vro, ARP attacks can be effectively prevented. Enable binding IP and MAC addresses when the internet cafe network is normal (1 ), you can create a one-to-one correspondence between MAC and Intranet IP addresses of each computer in the intern

Many forums in China have cross-site scripting vulnerabilities. There are also many such examples in foreign countries, even Google, but they were fixed in early December. (Editor's note: for cross-site scripting attacks, refer to "XSS cross-site scripting attack details"). Cross-site attacks can be easily constructed and are very concealed and difficult to detect (usually jump back to the original page imm

your network. Many companies only allow port 80 (HTTP) and Port 110/25 (email ). In addition, you can block and allow IP addresses and ranges.9. disable unnecessary services: disable unnecessary services on routers, servers, and workstations. Cisco devices provide small services by default through network operating systems, such as echo, chargen and discard ). These services, especially their UDP services, are rarely used for legal purposes. However, these services can be used to launch denial-

it. 3. Do not nest background pages orCode If the front-end page is nested in the background, attackers can directly use tools to know which files are stored in the background, and background files may be exposed to attackers, leaving attackers with a chance. 4. Add verification code to each page After Attackers know the background page, they can directly write the access path in the address and cannot enter The above are some summaries I have made in combination with our system. In our sy

! Npptools. after changing the properties of the dll file to read-only and hidden, remove their everyone permissions. The virus cannot be replaced or used, and arp won't work, to prevent ARP attacks. If drive C is in the NTFS partition format, all permissions are removed. If drive C is in the FAT format, read-only access is required. Method 2 gateway binding method 1. After a remote connection is successful

bound, such as ftp, then add the record. Note: 192.168.1.1 here is your gateway address, 00: 07: E9: xx is your gateway mac address. Note: The MAC address formats on Linux and Widows are different. Linux: AA, Windows: AA-AA. Note: You need to re-bind the mac address after each machine restart. You can write an automatic script and add it to the self-starting project. In addition, binding mac addresses requires two-way binding: machine a is bound to machine B, and machine B is also bound to

This article provides php emergency code to prevent website attacks. This is definitely not the best solution. I just want to provide it to you for further discussion. Not long ago, a website was attacked and the database was flushed away. Fortunately, there was a database backup on the customer's machine. When encountering such a serious problem, you must promptly identify the vulnerability to

This article provides php emergency code to prevent website attacks. this is definitely not the best solution. I just want to provide it to you for further discussion. Not long ago, a website was attacked and the database was flushed away. Fortunately, there was a database backup on the customer's machine. When encountering such a serious problem, you must promptly identify the vulnerability to

XSS attacks in the recent very popular, often in a piece of code accidentally will be put on the code of XSS attack, see someone abroad written function, I also stole lazy, quietly posted up ...The original text reads as follows: The goal of this function was to being a generic function that can being used to parse almost any input and render it XSS s Afe. For more information on actual XSS attacks