hardening wordpress

1. Overview of the HashSet class:(1) No guarantee of Set iteration order(2) In particular, it does not guarantee that the order is constant2. How HashSet guarantees element uniqueness(1) The underlying data structure is a hash table (an array of elements when the list is linked)(2) Hash table relies on the storage of hashes(3) Adding a function bottom-up relies on two methods:• int hashcode ()• boolean equals (Object obj)3. HashSet stores strings and iterates through:(1) The code example is as f

("Hello")); //true About //System.out.println ("Remove:" + c.remove ("java ee")); //false the the //Boolean contains (Object O): Determines whether the specified element is contained in the collection the //System.out.println ("contains:" +c.contains ("Hello")); + //System.out.println ("contains:" +c.contains ("Android")); - the //boolean isEmpty (): Determines whether the collection is emptyBayi //System.out.println ("IsEmpty:" +c.isempty ())

//While (Lit.hasnext ()) { - //string s = (string) lit.next (); to //System.out.println (s); + // } - //System.out.println ("-----------------"); the * //System.out.println (Lit.previous ()); $ //System.out.println (Lit.previous ());Panax Notoginseng //System.out.println (Lit.previous ()); - //nosuchelementexception the //System.out.println (Lit.previous ()); + A while(Lit.hasprevious ()) {//no pr

parameter append is True, indicating append, and false to no appendThe code is as follows:1 PackageCom.himi.fileoutputstream;2 3 ImportJava.io.FileOutputStream;4 Importjava.io.IOException;5 6 7 /**8 * How to implement data append write? 9 * Using construction Method: FileOutputStream (String name, Boolean append)Ten * The parameter append is True, indicating append, and false to not append One */ A - - Public classFileOutputStreamDemo5 { the - Public Static voidMain (string[] args)th

1. Create a byte output stream object and do a few things:(1) Call system function to create file(2) Create Fos object(3) Point the Fos object to this file2. code example:1 PackageCom.himi.fileoutputstream;2 3 ImportJava.io.File;4 Importjava.io.FileNotFoundException;5 ImportJava.io.FileOutputStream;6 Importjava.io.IOException;7 8 /*9 * Create file Fos.txt, write string: Hello WorldTen * One * Operation flow of the output of the byte stream: A * A: Create byte output stream object - * B: Write

Steps to use for the collection:(1) Creating a Collection Object(2) Creating an Element object(3) Adding elements to the collection(4) Traversing the collection:• Get an Iterator object from a collection object• Determine if there are elements through the Hasnext () method of the Iterator object• Get elements through the next () method of the Iterator object and move to the next positionNote:Iterators are a way to iterate through a collection .Iterators are dependent on collections and existJava

>100 | | score) {6 Throw NewMyException ("your input score cannot be greater than 100 or less than 0");//Here the MyException is inherited from exception is the compile-time exception, must be handled, here on the throw 7}Else {8System.out.println ("The score you entered is not a problem");9 }Ten } One A}(3) in compiling a test class, test the logic run, as follows:1 Packagecom.himi.myexception;2 3 ImportJava.util.Scanner;4 5 Public classStudentdemo {6 7 Public St

servlet only with Tomcat.(6) Apache is the most beginning page parsing service, Tomcat is developed after, in essence, the function of Tomcat can completely replace Apache, but Apache is the predecessor of Tomcat, and there are many people in the market still using Apache, So Apache will continue to exist, will not be replaced,Apache can not parse Java things, but parsing HTML fast .4. Examples of both:Apache is a car, which can be loaded with things such as HTML, but not water, to fill the wat

conversion20150521211842536.jpgAs you can see. In automatic binding, the float type of C + + is converted to a double type because the float type has no way to generate the binding. Short type converted to int32_t2. Namespace Conversion20150521212053405.jpgThe C + + code with the left namespace is defined in JS as the right-hand namespace.3. Convert JS-passed script variable to C + + variable20150521212332451.jpgFor example, the passed JS variable needs to be converted to an int type, and the r

those modules.Locate the code that contains loadmodule in the Httpd.conf. To close these modules, simply add a # sign before the line of Code. To find a module that is running, you can use the following statement:grep loadmodule httpd.confThe following modules are usually activated and are not large: mod_imap, mod_include, mod_info, mod_userdir, mod_status, mod_cgi, mod_autoindex13. Clear the default annotations from httpd.confThe default httpd.conf file in Apache 2.2.4 has more than 400 lines.

Usage: When implementing a login system, two people are required to be authorized to log in.Vi/etc/security/userChange the following:Sjhadmin = FalseRlogin = Trueauth1 = System;sjh,system;sam -- just add the line.Next time Use SJH User name login will require you to enter SJH and the Sam password is entered correctly before you can log into the systemThis article from "Technology bo" blog, declined reprint!AIX series------Security Hardening-two-ident

http://www.nagain.com/appscan/http://bbs.pediy.com/forumdisplay.php?f=166Http://jaq.alibaba.comHttp://www.cocoachina.com/ios/20141118/10245.htmlSecurity test Report for the online Banking app on the iOS platformHttp://www.freebuf.com/articles/terminal/102396.htmlAutomated testing for Android app detection: Comparison of five app security online detection platformshttp://safe.ijiami.cnHttps://mqc.aliyun.com/?spm=0.0.0.0.EI7ecOHttp://wetest.qq.com/?from=content_zhihuHttp://mtc.baidu.comHttp://www.

bandwidthundefined as the purpose of the formal parameter: to prevent undefined values are modified (in earlier versions of the browser)JQuery This is what the outermost layer of the source code does.about the This This exactly who to point to depends on how the function is called This the scene that appears: in the normal function This in non-strict mode, This refers to window , in strict mode, This refers to undefinedWindowStrict mode: Stricter requirements for grammar ru

System Performancevm.bdflush = + 1884, Improve virtual memory performancevm. Buffermem = 60# increases the size of the socket queue (effectively, q0). Net.ipv4.tcp_max_syn_backlog = 1024# Increa SE the maximum total tcp buffer-space Allocatablenet.ipv4.tcp_mem = 57344 57344 65536# increase the maximum TCP Write-buff Er-space Allocatablenet.ipv4.tcp_wmem = 32768 65536 52428815# increase the maximum TCP Read-buffer space Allocatablenet.ip V4.tcp_rmem = 98304 196608 1572864# increase the maximum a

/profile/etc/profile.bakecho export tmout=600 >>/etc/profile #增加10分钟超时退出echo export histtimeformat=\ '%F% T ' WhoAmI ' >>/etc/profile #记录操作历史记录的时间echo export histfilesize=10000 >>/etc/profileecho export hists ize=10000 >>/etc/profilesource/etc/profileNote: Historical command history can effectively record the behavior of the user, on the one hand can be easily found, but also to see when the user did what action. This article is from the "Ljohn" blog, make sure to keep this source http://ljohn.b

. Of course, in some of the more difficult topics, it is not enough to find these two laws alone.IdeasBecause it is a subsequent traversal, the last number traversed is the root node.And because it is a two-fork search tree, so the number of Biggenden nodes is on the right, and the number on the left is smaller than the root node.The number on the left is traversed more quickly than the right!So must meetThe maximum angular mark of the smallest Bibigen node in a number larger than the root node

unlock_time=120To the second row.The server needs to be restarted for the configuration to take effect. Check host access control (IP limit)To perform a backup:#cp-P/etc/hosts.allow/etc/hosts.allow_bak#cp-P/etc/hosts.deny/etc/hosts.deny_bakVim/etc/hosts.allow #插入all:*. *.*.*:allowVim/etc/hosts.deny #插入sshd: 555.555.555.555:deny Check Password lifecycle requirementsCp-p/etc/login.defs/etc/login.defs_bakTo modify policy settings:#vi/etc/login.defsModify the value of Pass_min_len to 5, modify

The United States Cloud (MOS) provides the Windows Server 2008 R2 and the Windows Server R2 Data Center version of the cloud host server. Windows Server security issues require extra attention because of the high market share of Windows servers, more malware such as virus Trojans for Windows servers, easy access, and low technology thresholds. To safely use Windows cloud hosts, it is recommended that you apply the following simple security hardening m

interfaceEchoEnter the URL of the Web server in the address bar of the browser to access this file, and add "/hello.php" at the end. If developed locally, this URL is typically http://localhost/hello.php or http://127.0.0.1/hello.php, depending on the settings of the Web server. If all the settings are correct, then the file will be parsed by PHP and the following results will be output in the browser:The program is so simple that it just uses the Echo statement from PHP to show Hello world. Us

51.67 150 65.56 175 79.44 200 93.33 225 10 7.22 250 121.11You can even assign multiple values to multiple variables in a single line and enter into the Python3 interactive interface:>>> A, B = 54>>>, 45>>> b 54 This technique is handy for exchanging two-digit values. >>> A, B = B, a>>> a54>>> b45To understand how this works, you need to learn the tuple (tuple) data type. We create tuples with commas. On the right side of the assignment statement we create a tuple, which we call the tuple e