brute force attack prevention

PS: This brute-force password cracking tool is quite powerful and supports online password cracking for almost all protocols. The key to cracking the password is whether the dictionary is powerful enough. Social engineering penetration can sometimes get twice the result with half the effort. This article only explores the test from the security point of view, and uses the content of this article to do the d

1/* 2 Question: Give you an N * n grid. Each grid has a value! Put two bishops on a grid. 3. Each Bishop can attack the grid on the diagonal line (the diagonal line of the main line and the diagonal line of the person ), then the four values on the grid are obtained (only once ). The maximum values obtained by two bishops and their locations must be output! 5 6 7 ideas: direct violence !.... Good brute

verification was written like this We can change it like this. In this way, we can use webshell. php? Url = ADmin. However, attackers can only hold webshell. php in a group. In addition, it can be verified by judging HTTP_REFERER. When a general tool is cracked, it will forge a URL package l with the HTTP_REFERER value of webshell, or some will simply be empty. When we use webshell. php? When the url = ADmin or another page (such as local html) submits a password, the HTTP_REFERER value is a

What is the most violent in network security? You may say "cracking!" in a different voice !". Yes, cracking is often ignored by many experts, especially brute force cracking. Many people think this is an incompetent performance. But sometimes it is the only and effective method in the intrusion. I believe you have used remote cracking. I recommend Hydra for the first time. Http://freeworld.thc.org/releases

#!/bin/bashlocal_ip= "192.168.0.4" #定义本地IP不会被拒绝tmp_log= ' Mktemp 'Cat/var/log/secure |grep "Failed password for root from" |awk ' {print $11} ' |uniq-c > $tmp _logCat $tmp _log |while Read lineDoAttack_num= ' echo $line |awk ' {print $} 'Attact_ip= ' echo $line |awk ' {print $} 'If ["$attack _num"-GT "] [" $local _ip "! =" $attack _ip "]Thenecho sshd: "$attact _ip":d eny >>/etc/hosts.denyFiDoneSort-u/etc/h

SQL injection attack types and prevention measures bitsCN.com Observing recent security events and their consequences, security experts have come to the conclusion that these threats are mainly caused by SQL injection. Although many articles have discussed SQL injection, the content discussed today may help you check your servers and take corresponding preventive measures. Types of SQL injection attacks Onl

crackedSmbService login account number and passwordusing the command:Hydra 127.0.0.1-l root-p p.txt SMB4 crackedPop3Service login account number and passworduse command:hydra-l root-p p.txt my.pop3.mail POP35 crackedImapService login account number and passworduse command:hydra-l root-p p.txt 192.168.1.30 IMAP6 crackedHttp-proxyService login account number and passworduse command:hydra-l root-p p.txt http-proxy://192.168.1.207 crackedRdpService login account number and passworduse command

the/etc/hosts.deny, some words have been successful. Ways to improve SSH security 1. Modify the configuration file of the SSHD server/etc/ssh/sshd_config, and add some parameters to the following modifications to enhance security. By default, the system uses port 22nd to change the listening port to another value (preferably more than 1024 of the high-end port to avoid conflicts with other regular service ports), which can increase the difficulty of the intruder detection system running the

dictionary is pass.lst, the cracked result saved in Ok.lst,-t is the number of simultaneous threads for 1,-f is when cracked a password on stop, IP is local, is the destination IP, Http-post-form means the hack is a form password hack submitted using the Post form of HTTP.The following parameter is the Name property of the corresponding form field in the Web page, and the following Hack https: # hydra-m/index.php-l muts-p pass.txt 10.36.16.18 HTTPS Crack TeamSpeak:

introductions.The internet, with Q, it was stolen, normal. Want to go online, want to use Q bar, don't want to be stolen Q, normal. Then come to know some stolen QQ knowledge! I. Interpretation of nouns 1. Dictionary A dictionary, in fact, is a text file that contains a lot of passwords. There are two ways to build a dictionary: by using dictionary software and by adding it manually. General dictionary software can generate a dictionary including birthdays, phone numbers, commonly used Engli

Anti-Virus Attack and Defense Research: simple Trojan Analysis and Prevention part1I. preface the development of virus and Trojan Horse technologies today, because they are always complementary, you have me and I have you, so the boundaries between them are often no longer so obvious, each other often uses some of the other's technologies to achieve their own goals, so now many times they are collectively r