how to prevent ddos attack for morons

cookies.Function to prevent some SYN attacks. Tcp_synack_retries and tcp_syn_retries define SYNNumber of retries. Increasing the length of the SYN queue can accommodate more network connections waiting for connection. Enabling the SYN Cookie function can block someSYN attacks can also reduce the number of retries. To adjust the preceding settings, follow these steps:Increase the SYN queue length to 2048:Sysctl-w net. ipv4.tcp _ max_syn_backlog = 2048

determine whether to enable syn cookies.Function to prevent some SYN attacks. Tcp_synack_retries and tcp_syn_retries define SYNNumber of retries. Increasing the length of the SYN queue can accommodate more network connections waiting for connection. Enabling the SYN Cookie function can block someSYN attacks can also reduce the number of retries. Adjust the aboveSetThe method is:Increase the SYN queue length to 2048:Sysctl-W net. ipv4.tcp _ max_sy

This weekend, it was a headache. The website suddenly couldn't be opened, and it was a tragedy to quickly connect remotely. ssh couldn't be connected, and it always timed out. The first response was ddos attacks. The result of the connection to the data center is that the traffic is full. What's even more tragic is that there is no hardware firewall in the data center. There is no way to go to the data center and check the IP address, only a few IP ad

of others, is now in the national crackdown on hackers, the violation of the law will be severely punished by the law. Note: DDoS is the abbreviation of the English Distributed denial of service, meaning "distributed denial of service", the attack method is to send a large number of seemingly legitimate network packets to the victim host through many "zombie hosts" (the host that the attacker invades or

This article mainly introduces php's anti-ddos Solution. The example analyzes the principles and targeted solutions of the ddos attack program, which is a very practical technique, for more information about how to solve php ddos attacks, see the example in this article. Share it with you for your reference. The specif

of the SYN queue, and tcp_syncookies are a function to determine whether to enable SYN cookies. Function to prevent some SYN attacks. Tcp_synack_retries and tcp_syn_retries define SYN Number of retries. Increasing the length of the SYN queue can accommodate more network connections waiting for connection. Enabling the SYN Cookie function can block some SYN attacks can also reduce the number of retries. To adjust the preceding settings, follow these

security, you can set the maximum connection, single IP connection, and blacklist!Maximum connections:7000-> 30000 (LoginGate) is set to 40 single IP connection is set to: 207100-> 31000 (SelChrGate) is set to 30 single IP connection is set to: 207200-> 32000 (RunGate) is set to 1000 Single IP connection is set to: 20In this way, we can effectively prevent DDOS attacks or other variant attacks!Defends agai

This article describes the DDoS attack solution for PHP. Share to everyone for your reference. The specific analysis is as follows: Today, one of their own machine suddenly send a large number of packets outside, can be more than 1G per second, although I use the strategy of UDP ban packet is not sent out but very occupy the cup Ah, so think of the last to find a way to solve. First look at the source cod

Original Source: Learn python step by step This weekend, it was a headache. The website suddenly couldn't be opened, and it was a tragedy to quickly connect remotely. ssh couldn't be connected, and it always timed out. The first response was ddos attacks. The data center was contacted and said that the traffic was full. What's even more tragic is that there was no hardware firewall in the data center, and there was no way to go to the data center and

Use Nginx and Nginx Plus to prevent DDoS attacks Distributed Denial of Service (DDoS) attacks) it refers to an attack that uses multiple machines to send a large number of seemingly legitimate data packets to a service or website, blocking the network, exhausting resources, and thus failing to provide normal services t

Anti-DDoS script # Lightweight prevention against SYN AttacksIptables-N syn-floodIptables-A input-p tcp-syn-J syn-floodIptables-I syn-flood-P TCP-m limit-limit 3/s-limit-burst 6-J returnIptables-a syn-flood-J reject # Prevent too many Dos connections. You can allow up to 15 Initial connections from each IP address of the Internet Nic, exceeding the limit of discardingIptables-A input-I eth0-P TCP-syn-M conn

To prevent DDOS attacks, you do not have to use a firewall.I have specially sorted out the anti-DDOS attack information to address the shameless behavior of the legendary private server webmasters!It can definitely prevent attacks against the legendary port or the high-traff