ddos protection server

The server collects two types of script code for ddos attacks. One is the linux shell Command, and the other is the support for php code in any environment. I will post the source code below, for more information, see. SHELL scripts for server defense against DDOS attacks 1. write scripts Mkdir/root/bin Vi/root/bin/dro

Comments: Distributed Denial of Service (DDoS) attacks are common and difficult to prevent by hackers. Distributed Denial of Service (DDoS) attacks are all called Distributed Denial of Service) it is an attack that hackers often use and cannot prevent. Its English name is Distributed Denial of Service ｡DDoS is a network attack that uses reasonable service request

I. Symptom Analysis there are two main types of Internet access for website Server Operators: Host hosting and self-pulling network leased lines, most people use the former, but many Internet cafe owners use the latter. Whether connected by the former or the latter, users can normally access the website, browse the webpage, listen to music and watch movies online, or participate in Forum posts, assuming that line and hardware faults can be ruled out,

Log on to your server with the root user to execute the following command, using it you can check whether your server is in a DDoS attack or not:NETSTAT-ANP |grep ' tcp\|udp ' |awk ' {print $} ' |Cut-d:-f1 |Sort |uniq-c | Sort–nThis command displays a list of the maximum number of IPs that are logged on that are connected to the server.DDoS becomes more complex,

This article provides a detailed analysis of solutions for PHP programs to prevent ddos, dns, and cluster server attacks. For more information, see This article provides a detailed analysis of solutions for PHP programs to prevent ddos, dns, and cluster server attacks. For more information, see Speaking of nonsens

The server is DDoS attack Defense shell script 1. Scripting Mkdir/root/bin vi/root/bin/dropip.sh #!/bin/bash /bin/netstat-na|grep Established|awk ' {print $} ' |awk-f: ' {print $} ' |sort|uniq-c|sort-rn|head-10|grep-v-e ' 192.168 |127.0′|awk ' {if ($2!=null $1>4) {print $}} ' >/tmp/dropip For I in $ (CAT/TMP/DROPIP) Todo /sbin/iptables-a input-s $i-j DROP echo "$i kill at ' Date '" >>/var/log/

DDOS is crazy recently The module mod_evasive in Apache that prevents DoS attacks. In lighttpd, mod_evasive can also be used to limit the number of concurrent connections to prevent DDOS attacks.In lighttpd. add the following code to the conf file to enable mod_evasive. This restriction is not enabled for downloading zip files, mp3 files, and other files. Otherwise, the website cannot be connected when the

Defense new stage, the United States sk100 high-hard anti-server, for the United States high-anti-server needs of people, the choice of the United States SK engine room is the most suitable. SK Engine room in the United States is the United States the strongest anti-DDoS capability of one of the room, the room distributed in Chicago, Denver, a single default 15G

1, server-side analysis method (1) Synflood attack judgment A: Network Neighborhood-> the "Properties"-> double click the NIC, the number of packets received per second is greater than 500. B: Start-> program-> attachment-> command prompt->c:\>netstat–na and observe a large number of syn_received connection states. C: After the network cable plugged in, the server immediately solidified cannot operate,

1, ensure the security of the server systemThe first step is to ensure that the server software does not have any vulnerabilities to prevent attackers from invading. Make sure the server is up to date with the latest system and security patches. Remove unused services on the server and close unused ports. For Web sites

Hello everyoneI am anzai.QQ8497054Some time ago, my server has been under DDOS attacks. Currently, only IP address sources can be blocked for the time being. It is a nightmare to manually add IP addresses without changing the source. I thought of a way to use SHELL.It's easy to use. At least I think it's good.1. write scriptsMkdir/root/binVi/root/bin/dropip. sh#! /Bin/bash/Bin/netstat-na | grep ESTABLISHED

Analysis of PHP programs to prevent ddos, dns, and cluster server attacks. To put it bluntly, copy the code as follows :? Php query prohibited IP $ ip $ _ SERVER [REMOTE_ADDR]; $ fileht. htaccess2; if (! File_exists ($ fileht) file_put_contents ($ fileht, not much nonsense, on the code The code is as follows: // Query the forbidden IP address$ Ip = $ _

This article provides a detailed analysis of PHP programs to prevent ddos, dns, and cluster server attacks. The code is as follows: // Query the forbidden IP address$ Ip = $ _ SERVER ['remote _ ADDR '];$ Fileht = ". htaccess2 ";If (! File_exists ($ fileht ))File_put_contents ($ fileht ,"");$ Filehtarr = @ file ($ fileht );If (in_array ($ ip. "\ r \ n", $ file

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Note: This problem exists in remote desktop protection of server security dog 4.2. If remote desktop is enabled, the server cannot be accessed or remotely logged on to the server. No specific solution is provided for this problem.Solution 11. If remote desktop login is disabled, the

Hengyang High-protection server rental A tutorial on setting up a DNS server under LinuxDNS is the abbreviation for the domain Name System, the computer and Network Service naming system for the organization domain hierarchy. When a user enters a DNS name in the application, the DNS service can resolve the name to the IP address information associated with this n

Website acceleration and Linux Server Protection Website Acceleration 1. Configure gzip compression for Nginx After nginx gzip compression is enabled, the size of static resources such as web pages, css, and js will be greatly reduced, which can save a lot of bandwidth, improve transmission efficiency, and give users a quick experience. Although it will consume cpu resources, it is worthwhile to provide a b

"1"/sbin/iptables-i input-s 45.61.255.176-j ACCEPT/sbin/iptables-i input-d 45.61.255.176-j ACCEPT/sbin/iptables-i input-s 23.27.6.15-j ACCEPT/sbin/iptables-i input-d 23.27.6.15-j ACCEPT/sbin/iptables-t nat-i prerouting-d 23.27.6.15-j DNAT--to-destination 45.61.255.17610/sbin/iptables-t nat-i postrouting-d 45.61.255.176-j SNAT--to-source 23.27.6.15/sbin/iptables-t nat-i postrouting-s 45.61.255.176-j SNAT--to-source 23.27.6.15"2" Modified/etc/sysctl.conf file# Controls IP Packet forwardingNet.ipv4

Apache1. Hide ServerTokens ProductOnlyServerSignature Off or ServerTokens ProdServerSignature Off2. Disable symbolic link 3. Run nobody4 with a specific user and specify the listening port and ip address (for example, you do not need to provide services with multiple ip addresses) 5. root directory permissions 6. mod_security is an open-source web Application Security Program (or web application firewall) that integrates intrusion detection and defense engine functions ). it runs as an Apache We

Note:Disaster recovery SeriesOfArticleYesby Robert Davis Written in sqlsoldier,I personally think it is quite good, so according to my own understanding, testing and sorting are not directly translated. If there is any inaccuracy, please correct me. This article introduces the second article on Database disaster recovery. It mainly discusses the protection measures for restoring a database backup, especially when you get a backup that contains a d