how to prevent brute force attack

execute the command:# hydra-l admin-p pass.lst-o ok.lst-t 1-f 127.0.0.1 http-post-form "Index.php:name=^user^pwd=^pass^:　　Description: cracked user name is admin, Password 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 co

|+---------+---------+--------------------------------------------------+----------------------------------- ----------+-----------+------------+| 1 | admin | http://localhost/dvwa/hackable/users/admin.jpg | b59c67bf196a4758191e42f76670ceba (1111) | admin | admin || 2 | gordonb | http://localhost/dvwa/hackable/users/gordonb.jpg | e99a18c428cb38d5f260853678922e03 (abc123) | Brown | Gordon || 3 | 1337 | http://localhost/dvwa/hackable/users/1337.jpg | 8d3533d75ae2c3966d7e0d4fcc69216b (Charley) | M

illegal link to shield off. and block out the spam, only keep normal mail delivery to the server, greatly reducing the malicious connection and virus mail caused by the security risks, see below the relevant schematic diagram.650) this.width=650; "src=" Http://www.unioncyber.net/images/20160418-3.jpg "height=" 534 "width=" 793 "alt=" 20160418-3.jpg "/>650) this.width=650; "src=" Http://www.unioncyber.net/images/20160418-3.jpg "height=" 534 "width=" 793 "alt=" 20160418-3.jpg "/>Can be clearly se

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

= "398" hspace= "0" vspace= "0" title= "" style= "width:724px;height:398px;float:right;"/> The following screen appears: 650) this.width=650; "border=" 1 "src=" http://image.mamicode.com/info/201506/20180921185542983716.jpg "width=" 670 " height= "374" hspace= "0" vspace= "0" title= "" style= "width:670px;height:374px;"/> Delete the parameters in the yellow box. Finally save the exit. Enter exit to restart the system and find the root password is gone.This article is

First modify the SSH port.Create Script pb_ssh.sh #! /bin/bash#crontab execute every 1 minutes#*/1 * * * */root/pb_ssh.sh# Get Secure records in the first 1 minutes, Count SSH authentication failed IP and its number of failuresScanner= ' grep ' $ (date-d -1min|awk ' {print substr ($0,10,7)} ') "/var/log/secure|awk '/failed/{print $ (NF-3)} ' |awk-f ':" ' { Print $NF} ' |grep-v From|sort|uniq-c|awk ' {print $ "=" $;} ' `For I in $SCANNERDo# Number of authentication failures takenNum=

FAT32 format does not support NTFS permission. (5) For Windows 2000 series and Windows Server 2003 series, the "Security" tab is easily found by default, but the "Security" tab in Windows XP Professional is disabled by default, you can remove "√" from "use simple sharing (recommended)" in "Advanced Settings" on the "control panel"-"Folder Options"-"View" tab, after "OK", follow the above method again to see the "Security" tab. ==============To sum up, the 2, 3, and 4 methods are the most basic

Http://www.4.cn gold network through the verification code on the brute force cracking prevention, when you log on to an account with a wrong password, you need to enter the verification code to log on again. Many developers also use the verification code to prevent brute-force