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  • It is important to note that these do not specify how authentication will be handled, nor do they specify how session management will be handled. They essentially describe how and where session ids/...

    You seem to be confusing/merging two different concepts together. We start of talking about encrypting traffic (HTTPS) and then we start talking about different ways to manage authenticated sessions. In a secure application these are not mutually exclusive tasks. There also seem to potentially be a misunderstanding how session management can impact authentication. Based on that I will provide a primer on web application/web api session management, authentication, and encryption.

    Introduction Session Management

    HTTP transactions are stateless by default. HTTP does not specify any method to let your application know that a HTTP request has been sent from a specific user (authenticated or not).

    For robust web applications, this is not acceptable. We need a way to associate requests and data made across multiple requests. To do this, on initial request to the server a user needs to be assigned a "session". Generally sessions have some kind of unique id that is sent to the client. The client sends that session id with every request and the server uses the session id sent in every request to properly prepare a response for the user.

    It is important to remember that a 'session id' can be called many other things. Some examples of those are: session token, token, etc. For consistency I will use 'session id' for the rest of this response.

    Each HTTP request from the client needs to include the session id; this can be done in many ways. Popular examples are:

    It can be stored in a cookie - cookies for the current domain are automatically sent on every request. It can be sent on the URL - each request could send the session id on the URL, not suggested since session ids will stay in the clients history It can be sent via as a HTTP header - each request would need to specify the header Most web application frameworks use cookies. However application that rely on JavaScript and single page designs may opt to use a HTTP header/store it in some other location that is observable by the server.

    It is very important to remember that the HTTP response that notifies the client of their session id and the client's requests that contain the session id are completely plain text and 100% unsafe. To battle that, all HTTP traffic needs to be encrypted; that is where HTTPS comes in.

    It is also important to point out we have not talked about linking a session to a specific user in our system. Session management is just associating data to a specific client accessing our system. The client can be in both authenticated and unauthenticated states, but in both states they generally have a session.

    Authentication

    Authentication is where we link a session to a specific user in our system. This is generally handled by a login process where a user supplies credentials, those credentials are verified, and then we link a session to a specific user record in our system.

    The user is in turn associated with privileges for fine grained access control via access control lists and access control entries (ACL and ACE). This is generally referred to as "Authorization". Most system always have both Authentication and Authorization. In some simple systems all authenticated users are equals in which case you won't have authorization past simple authentication. Further information on this is out of scope for this question, but consider reading about ACE/ACL.

    A specific session can be flagged as representing an authenticated user in different ways.

    Their session data stored server side could store their user id / some other flag that denotes that the use is authenticated as a specific user Another user token could be send to the client just like a session id (which over unencrypted HTTP is just as unsafe as sending a session id unencrypted) Either option is fine. It generally comes down to the technology you are working in and what they offer by default.

    A client generally initiates the authentication process. This can be done by sending credentials to a specific url (e.g. yoursite.com/api/login). However if we want to be 'RESTful' we generally would referencing a resource by some noun and doing the action of 'create'. This could be done by requiring a POST of the credentials to yoursite.com/api/authenticatedSession/. Where the idea would be to create an authenticated session. Most sites just POST the credentials to /api/login or the like. This is a departure from "true" or "pure" RESTful ideals, but most people find this a simpler concept rather than thinking of it as "creating an authenticated session".

    Encryption

    HTTPS is used to encrypt HTTP traffic between a client and server. On a system that relies on authenticated and unauthenticated users, all traffic that relies on a user being authenticated needs to be encrypted via HTTPS; there is no way around this.

    The reason for this is that if you authenticate a user, share a secret with them (their session id, etc) and then begin to parade that secret in plain HTTP their session can be hijacked by man-in-the-middle attacks. A hacker will wait for for the traffic to go through an observed network and steal the secret (since its plain text over HTTP) and then initiate a connection to your server pretending to be the original client.

    One way people combat this is by associating the requests remote IP address to an authenticated session. This is ineffective alone as any hacker will be able to spoof their requests remote IP address in their fake requests and then observe the responses your sever is sending back. Most would argue that this is not even worth implementing unless you are tracking historical data and using it to identify a specific user's login patterns (like Google does).

    If you need to split up your site between HTTP and HTTPS sections, it is imperative that the HTTP traffic does not send or receive the session id or any token used to manage the authentication status of a user. It is also important that you do not send sensitive application data within non-HTTPs requests/responses.

    The only way to secure data within web applications/APIs is to encrypt your traffic.

    Your Topics One By One Basic-Http-Auth

    Authentication: YES Session Management: NO Encryption: NO This is a method for authenticating by web resource only. Basic authentication authenticates uses by resource identified by URL. This was most popularly implemented by Apache HTTP Web Server with the use of .htaccess based directory/location authentication. Credentials have to be sent with each request; clients generally handled this transparently for users.

    Basic authentication can be used by other systems as a mode of authentication. However, the systems that utilize Basic-Http-Auth are providing authentication and session management, not the Basic-Http-Auth itself.

    This is not session management. This is not encryption; content and credentials are nearly 100% plain text This does not secure the contents of the application's HTTP request/responses. Digest-Auth

    Authentication: YES Session Management: NO Encryption: NO This is exactly the same as Basic-Http-Auth with the addition of some simple MD5 digesting. This digesting should not be relied upon instead of using encryption.

    This is not session management. This is not encryption; the digest is easily broken This does not secure the contents of the application's HTTP request/responses. OAuth

    Authentication: YES Session Management: NO Encryption: NO OAuth just lets you have an external service validate credentials. After that it is up to you to manage/work with the result of authentication request to your OAuth provider.

    This is not session management. This is not encryption; your sites traffic is still plain text. The authentication process will be secure due to HTTPS restrictions, but your application is still vulnerable. This does not secure the contents of the application's HTTP request/responses. Gangster Handshake / Custom HTTP header

    Authentication: YES, potentially Session Management: YES, potentially Encryption: NO "Custom HTTP header" is a type of "Gangster Handshakes"; as such I will use the same section to discuss them. The only difference is that a "Custom HTTP header" is specifying where the hanshake (session id, token, user authentication toke, etc) will be stored (i.e. in a HTTP header).

    It is important to note that these do not specify how authentication will be handled, nor do they specify how session management will be handled. They essentially describe how and where session ids/authentication tokens will be stored.

    Authentication would need to be handled by your application or via a third party (e.g. OAuth). Session management will still need to be implemented as well. The interesting thing is you can choose the merge the two if you wish.

    This is not encryption; your sites traffic is still plain text. The authentication process will be secure due to HTTPS restrictions if you use OAuth, but your application is still vulnerable. This does not secure the contents of the application's HTTP request/responses. What You Need To Do ...I highly suggest you make sure that you understand that a robust web application that is secure needs the following:

    Encryption (HTTPS is pretty much your only choice) Session Management Authentication / Authorization Authorization relies upon Authentication. Authentication relies upon Session Management and Encryption makes sure the session isn't hijacked and that the credentials are not intercepted.

    Flask-Login

    I think you should look into flask-login as a way to avoid re-implementing the wheel. I have personally never used it (I use pyramid for web applications in python). However, I have seen it mentioned before in web application/python boards. It handles both authentication and session management. Throw your web api/application through HTTPS and you have all three (Encryption, Session Management, and User Authentication).

    If you do not / can not use flask-login, be prepared to write your own, but do research first on how to create secure authentication mechanisms.

    If at all possible, if you do not understand how to write an authentication procedure please do not attempt it without first learning how hackers use pattern based attacks, timing attacks, etc.

    Please Encrypt Your Traffic

    ...move past the idea that you can avoid using HTTPS with some "clever" token use. Move past the idea that you should avoid using HTTPS/encryption because "its slow", process intensive, etc. It is process intensive because it is an encryption algorithm. The need to ensure the safety of your user's data and your applications data should always be your highest priority. You do not want to go through the horror of notifying your users that their data was compromised.

    转载于:https://my.oschina.net/giszhang/blog/323043

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  • States, transitions, and entire flows can be secured in Spring Web Flow by using the<secured> element as a child of those elements. For example, to secure access to aview state, you might use .....

    States, transitions, and entire flows can be secured in Spring Web Flow by using the <secured> element as a child of those elements. For example, to secure access to a view state, you might use <secured> like this:

    1 <view-state id="restricted">
    2     <secured attributes="ROLE_ADMIN" match="all"/>
    3 </view-state>

    As configured here, access to the view state will be restricted to only users who are granted ROLE_ADMIN access (per the attributes attribute). The attributes attribute takes a comma-separated list of authorities that the user must have to gain access to the state, transition, or flow. The match attribute can be set to either any or all . If it’s set to any , then the user must be granted at least one of the authorities listed in attributes . If it’s set to all , then the user must have been granted all the authorities.You may be wondering how a user is granted the authorities checked for by the <secured> element.

    转载于:https://www.cnblogs.com/shamgod/p/5248653.html

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  • Secured borrowings是什么意思最厌烦的不是成为陌生人,而是逐渐陌生的感觉。Secured borrowings 或确认为质押借款 双语例句 1 The bank borrowings are secured by certain assets of the Group. 银行借贷以本集团...

    Secured borrowings是什么意思最厌烦的不是成为陌生人,而是逐渐陌生的感觉。

    Secured borrowings 或确认为质押借款 双语例句 1 The bank borrowings are secured by certain assets of the Group. 银行借贷以本集团若干资产为抵押。 2 The problems largely involved short-term loans, called repo borrowings, that are 小编遇到某个人,知道了他的名字,说了几句话,然后他死了。其他人就像海浪,潮来潮去,又像麦浪,随风飘拂。

    APL 出现All Reviewers Secured 是什么意思习惯忧伤,习惯隐藏,习惯别人看不到自己的伤,习惯让自己变得坚强。

    66cfe4a5aee53e2d8129272f710aea8f.png

    这是代表所有审稿人已经开始审稿,all reviewers secured和review started其实是一个意思.apl只有一个审稿人,所谓all就是指那一个. 你这篇文章命途多舛啊,竟然还有审稿人撤回审稿.这审稿人也真够不靠谱的. 审稿结束的时候会有 Decision Letter Be爱可以简简单单,但不能随随便便小编的微笑可以给任何人,但小编的心只能给一个人

    Secured Note是什么意思啊?

    secured note 有抵押票据;有担保票据;有担保的本票;有价证券 Secured Note: A bilateral lending agreement, the note represents a contractual obligation to lend and borrow money at a specified interest rate. 有抵押票据:双边借贷协人生不过一场旅行,你路过小编,小编路过你,各自修行,各自向前。

    Secured Note是什么意思呢?小编说小编会使你可以依靠的肩膀可你却站在离小编最远的地方

    secured note 有担保票据 [网络短语] Secured note 有担保票据,有抵押票据,抵押期票 Secured Promissory Note 承诺函,担保承诺函 senior secured convertible note 优先担保可转换票据那些终将过下去的日子,叫做余生。而与你有关的日子,才是未来。

    Convertible-Secured-Debentures是什么意思人生是一场旅程。小编们经历了几次轮回,才换来这个旅程。而这个旅程很短,因此不妨大胆一些,不妨大胆一些去爱一个人,去攀一座山,去追一个梦……有很多事小编都不明白。但小编相信一件事。上天让小编们来到这个世上,就是为了让小编们创造奇迹。

    Convertible Secured Debentures 可转换担保债券 可改变的担保借款股份 secured debentures 释义 担保借款股份 双语例句 Nothing in this Ordinance shall apply to any debentures issued any mortgage, loan, or other incorporated company a原谅小编的不善言辞,你给的每一次感动,小编都牢记于心。

    SecuredObligations是什么意思

    这是代表所有审稿人已经开始审稿,all reviewers secured和review started其实是一个意思。apl只有一个审稿人,所谓all就是指那一个。 你这篇文章命途多舛啊,竟然还有审稿人撤回审稿。。。这审稿人也真够不靠谱的。

    英语:FOB STOWED、SECURED、LASHED & DUNNAGED是什思念拉近了你小编的距离,小编的爱,风告诉你了吗?为什么你的爱,小编听不到

    英语:FOB STOWED、SECURED、LASHED & DUNNAGED是什么意思?人的一生有很多幸运,比如遇见你,原来你是小编最想留住的幸运。

    FOB Stowed(FOB理舱费在内) 指卖方负责将货物装入船舱并承担包括理舱费在内的装船费用。理舱费是指货物人舱后进行安置和整理的费用。 secured:安全的 这个就是一个独立单词还是和其他单词组成了一个词组? LASHED,SECURED AND DUNNAGED:(船方)不当你决定了从此要做一个快乐的人,首先要做一个坚强的人。

    Secured Debt 是什么意思啊?

    同学欢迎来到励志名言网,很高兴为您解答。 您所说的这个词语,是属于期货从业词汇的一个,掌握好期货从业词汇可以让您在期货从业的学习中如鱼得水,这个词的翻译及意义如下:有抵押品作担保或抵押,以减低借贷风险的债务。

    融资合同中,secured hunting line facility是什么...大意为:取得一定有担保责任的安全额度。

    展开全文
  • <div><p>Hello, <p>I am using the latest version of the library (0.7.2). I noticed that the init function was marked as deprecated so I tried to use the new ...iamMehedi/Secured-Preference-Store</p></div>
  • pdf secured 最近,Grails用户邮件列表中的一个用户想知道在定义@Secured注释时如何减少重复 。 在Java批注中指定属性的规则非常严格,因此我看不到直接执行他所要求的方法的方法。 使用Groovy并没有真正的帮助...

    pdf secured

    最近,Grails用户邮件列表中的一个用户想知道在定义@Secured注释时如何减少重复 。 在Java批注中指定属性的规则非常严格,因此我看不到直接执行他所要求的方法的方法。

    使用Groovy并没有真正的帮助,因为Groovy类中的注释大部分与Java中的注释几乎相同(数组值的语法除外)。 当然,Groovy现在支持注释中的闭包,但这需要在插件中进行代码更改。 但是后来我想到了Jeff Brown最近在缓存插件中所做的一些工作。

    Spring的缓存抽象API包括三个注释。 @Cacheable@CacheEvict@CachePut 。 我们正在考虑支持比这些注释所允许的更多的配置选项,但是由于您无法对注释进行子类化,因此我们决定使用AST转换来查找这些注释的版本(当前具有与Spring注释相同的属性)并进行转换有效的Spring注释。 因此,我查看了Jeff的代码 ,它最终成为解决此问题的基础。

    无法使用代码外部化权限列表,因为您无法控制编译顺序。 因此,我最终得到了一个不完美但可以使用的解决方案–我在项目根目录中寻找一个属性文件( roles.properties )。 格式很简单–密钥是每个权限列表的名称,值是权限名称的列表,以逗号分隔。 这是一个例子:

     admins=ROLE_ADMIN, ROLE_SUPERADMIN  switchUser=ROLE_SWITCH_USER  editors=ROLE_EDITOR, ROLE_ADMIN 

    这些键是用于新@Authorities批注的值:

     package grails.plugins.springsecurity.annotation;  import java.lang.annotation.Documented;  import java.lang.annotation.ElementType;  import java.lang.annotation.Inherited;  import java.lang.annotation.Retention;  import java.lang.annotation.RetentionPolicy;  import java.lang.annotation.Target;  import org.codehaus.groovy.transform.GroovyASTTransformationClass;  /** 
      * @author Burt Beckwith 
      */  @Target ({ElementType.FIELD, ElementType.METHOD, ElementType.TYPE})  @Retention (RetentionPolicy.RUNTIME)  @Inherited  @Documented  @GroovyASTTransformationClass ( 
         "grails.plugins.springsecurity.annotation.AuthoritiesTransformation" )  public @interface Authorities { 
        /** 
         * The property file key; the property value will be a 
         * comma-delimited list of role names. 
         * @return the key 
         */ 
        String value();  } 

    例如,这是一个使用新注释的控制器:

     @Authorities ( 'admins' )  class SecureController { 
        @Authorities ( 'editors' ) 
        def someAction() { 
           ... 
        }  } 

    这等效于此控制器(如果使用@Authorities反编译,则会看到两个注释):

     @Secured ([ 'ROLE_ADMIN' , 'ROLE_SUPERADMIN' ])  class SecureController { 
        @Secured ([ 'ROLE_EDITOR' , 'ROLE_ADMIN' ]) 
        def someAction() { 
           ... 
        }  } 

    AST转换类使用属性文件中指定的角色名称查找@Authorities批注,加载属性文件并添加新的@Secured批注(不会删除@Authorities批注):

     package grails.plugins.springsecurity.annotation;  import grails.plugins.springsecurity.Secured;  import java.io.File;  import java.io.FileReader;  import java.io.IOException;  import java.util.ArrayList;  import java.util.List;  import java.util.Properties;  import org.codehaus.groovy.ast.ASTNode;  import org.codehaus.groovy.ast.AnnotatedNode;  import org.codehaus.groovy.ast.AnnotationNode;  import org.codehaus.groovy.ast.ClassNode;  import org.codehaus.groovy.ast.expr.ConstantExpression;  import org.codehaus.groovy.ast.expr.Expression;  import org.codehaus.groovy.ast.expr.ListExpression;  import org.codehaus.groovy.control.CompilePhase;  import org.codehaus.groovy.control.SourceUnit;  import org.codehaus.groovy.transform.ASTTransformation;  import org.codehaus.groovy.transform.GroovyASTTransformation;  import org.springframework.util.StringUtils;  /** 
      * @author Burt Beckwith 
      */  @GroovyASTTransformation (phase=CompilePhase.CANONICALIZATION)  public class AuthoritiesTransformation implements ASTTransformation { 
       protected static final ClassNode SECURED = 
            new ClassNode(Secured. class ); 
       public void visit(ASTNode[] astNodes, SourceUnit sourceUnit) { 
         try { 
           ASTNode firstNode = astNodes[ 0 ]; 
           ASTNode secondNode = astNodes[ 1 ]; 
           if (!(firstNode instanceof AnnotationNode) || 
               !(secondNode instanceof AnnotatedNode)) { 
             throw new RuntimeException( "Internal error: wrong types: " + 
                 firstNode.getClass().getName() + 
                 " / " + secondNode.getClass().getName()); 
           } 
           AnnotationNode rolesAnnotationNode = (AnnotationNode) firstNode; 
           AnnotatedNode annotatedNode = (AnnotatedNode) secondNode; 
           AnnotationNode secured = createAnnotation(rolesAnnotationNode); 
           if (secured != null ) { 
             annotatedNode.addAnnotation(secured); 
           } 
         } 
         catch (Exception e) { 
           // TODO 
           e.printStackTrace(); 
         } 
       } 
       protected AnnotationNode createAnnotation(AnnotationNode rolesNode) 
             throws IOException { 
         Expression value = rolesNode.getMembers().get( "value" ); 
         if (!(value ConstantExpression)) { (!(value instanceof ConstantExpression)) { 
           // TODO 
           System.out.println( 
              "annotation @Authorities value isn't a ConstantExpression: " + 
              value); 
           return null ; 
         } 
         String fieldName = value.getText(); 
         String[] authorityNames = getAuthorityNames(fieldName); 
         if (authorityNames == null ) { 
           return null ; 
         } 
         return buildAnnotationNode(authorityNames); 
       } 
       protected AnnotationNode buildAnnotationNode(String[] names) { 
         AnnotationNode securedAnnotationNode = new AnnotationNode(SECURED); 
         List<Expression> nameExpressions = new ArrayList<Expression>(); 
         for (String authorityName : names) { 
           nameExpressions.add( new ConstantExpression(authorityName)); 
         } 
         securedAnnotationNode.addMember( "value" , 
                   new ListExpression(nameExpressions)); 
         return securedAnnotationNode; 
       } 
       protected String[] getAuthorityNames(String fieldName) 
            throws IOException { 
         Properties properties = new Properties(); 
         File propertyFile = new File( "roles.properties" ); 
         if (!propertyFile.exists()) { 
           // TODO 
           System.out.println( "Property file roles.properties not found" ); 
           return null ; 
         } 
         properties.load( new FileReader(propertyFile)); 
         Object value = properties.getProperty(fieldName); 
         if (value == null ) { 
           // TODO 
           System.out.println( "No value for property '" + fieldName + "No value for property '" + fieldName + "'" ); 
           return null ; 
         } 
         List<String> names = new ArrayList<String>(); 
         String[] nameArray = StringUtils.commaDelimitedListToStringArray( 
             value.toString()) 
         for (String auth : nameArray) { 
           auth = auth.trim(); 
           if (auth.length() > 0 ) { 
             names.add(auth); 
           } 
         } 
         return names.toArray( new String[names.size()]); 
       }  } 

    我可能会在某个时候将其包含在插件中-我已提醒您创建了JIRA问题 -但现在您可以将这两个类复制到应用程序的src / java文件夹中,并在项目根目录中创建一个roles.properties文件。 每当您要添加或删除条目或从条目添加或删除角色名称时,请更新属性文件,运行grails cleangrails compile以确保使用最新值。

    参考:An Solipsists博客上,由我们的JCG合作伙伴 Burt Beckwith 使您的Spring Security @Secured注释更加干燥


    翻译自: https://www.javacodegeeks.com/2012/06/make-your-spring-security-secured.html

    pdf secured

    展开全文
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  • Recently a user on the Grails User mailing list wanted to know how ... to reduce repetition when defining @Secured annotations. The rules for specifying attributes in Java annotations are pretty restric
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  • 有抵押债务Secured debt

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  • This can be printed or open under Linux itself. But, you can convert it back .ps file (postscript)back to a PDF as follows: ps2pdf input. ps Please note that the ps2pdf command is part of ...
  • Sniffing SSL secured logins with Ettercap

    千次阅读 2012-04-24 15:59:56
    The file we will be editing is called etter.conf and it can be found under the etc folder. (Full Path = /etc/etter.conf) We need to change the part under the “redir_command_on/off” section. It ...
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  • Would it be possible to please add a way to automatically generate the API spec for the Auth routes? <h2>Alternatives and current work-arounds <p>Could look for a competitor or each customer could ...
  • 太晚了,有空再看,明天还要上课...http://blogs.sun.com/enterprisetechtips/entry/improving_jsf_security_configuration_withImproving JSF Security Configuration With Secured Managed BeansBy Vinicius ...
  •  for the output of separate key and certificate files rather than a single .P12 file, from which cert and key files derived can’t be parsed by kibana ( it is probably a bug of kibana). In my case, ...
  • I am submitting a job to YARN (on spark 2.1.1 + kafka 0.10.2.1) which connects to a secured hbase cluster. This job, performs just fine when i am running in "local" mode (spark.master=lo...
  • To create the key you will need to be root so you can either su to root or use sudo in front of the commands # Generate private key openssl genrsa -out ca.key 2048 # Generate CSR ...
  • You can enable more than one type of annotation in the same application, but only one type should be used for any interface or class as the behavior will not be well-defined otherwise. If two ...
  • 翻译自 ...本文探讨Spring Security 4 基于@PreAuthorize, @PostAuthorize, @Secured和 Spring EL表达式...
  • 原文地址:http://websystique.com/spring-security/spring-security-4-method-security-using-preauthorize-postauthorize-secured-el/ In order to enable Spring Method level Security, we need to annotate a....
  • Here are the steps to create the protected ...http://www.online-tech-tips.com/computer-tips/how-to-create-a-secured-and-locked-folder-in-windows-xp/ 转载于:https://blog.51cto.com/aleven/287447
  • openssh和sshRemote access is the main method while managing Linux ... Remote access must be secured accordingly. OpenSSH suite which implements Ssh provides this security with server and client si...
  • PDF documents may be secured by an initial signature/certificate for disallowing any changes. This is not to be confused with “password security” or “certificate security”. I am speaking of the k...

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