0
What is the weakest challenge and response authentication method used by iis7?
Wiki User
∙ 11y ago
Basic Authentication
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What is a method for confirming users identities?
Authentication
What is MFA data?
Multifactor authentication (MFA) is a security system that requires more than one method of authentication from independent categories of credentials to verify the user's identity for a login or authenticate the transaction.
What is access control method used on networks?
NAC is a centralised method for controlling network security.It is based on the following procedures.Detect - Detection and identification of new devices connecting to the network Authenticate - Authentication of users and/or devices Assess - Assessment of end systems regarding their compliance and/or vulnerabilities Authorise - Authorisation to use the network based on the results of the authentication and the assessmentMonitor - Monitoring users and devices once they are connected to the network Contain - Quarantine problem end systems and/or users to prevent them from negatively impacting the overall network environmentRe-mediate - Re-mediation of problems with the end system and/or user
What is the function of line vty in router configuration?
Vty Line Authentication and AuthorizationThe system supports 20 virtual tty (vty) lines for Telnet, Secure Shell Server (SSH) and FTP services. Each Telnet, SSH, or FTP session requires one vty line. You can add security to your system by configuring the software to validate login requests. There are two modes of authentication for a vty line:Simple authentication - password-only authentication via the local configurationAAA authentication - username and password authentication via a set of authentication serversYou can enable AAA authorization, which allows you to limit the services available to a user. Based on information retrieved from a user's profile, the user is either granted or denied access to the requested server.Configuring Simple AuthenticationTo configure simple authentication: Specify a vty line or a range of vty lines on which you want to enable the password.host1(config)#line vty 8 13 host1(config-line)# Specify the password for the vty lines.host1(config-line)#password 0 mypassword Enable login authentication on the lines.host1(config-line)#login Display your vty line configuration.host1#show line vty 8 no access-class in data-character-bits 8 exec-timeout never exec-banner enabled motd-banner enabled login-timeout 30 seconds lineUse to specify the vty line(s) on which you want to enable the password.You can set a single line or a range of lines. The range is 0-19.Examplehost1(config)#line vty 8 13 Use the no version to remove a vty line or a range of lines from your configuration; users will not be able to run Telnet, SSH, or FTP to lines that you remove. When you remove a vty line, the system removes all lines above that line. For example, no line vty 6 causes the system to remove lines 6 through 19. You cannot remove lines 0 through 4.loginUse to enable password checking at login.The default setting is to enable a password.Examplehost1(config-line)#login Use the no version to disable password checking and allow access without a password.passwordUse to specify a password on a single line or a range of lines.If you enable password checking but do not configure a password, the system will not allow you to access virtual terminals.Specify a password in plain text (unencrypted) or cipher text (encrypted). In either case, the system stores the password as encrypted.Use the following keywords to specify the type of password you will enter:0 (zero) - unencrypted password5 - secret7 - encrypted passwordNote: To use an encrypted password or a secret, you must follow the procedure in Setting Basic Password Parameters earlier in this chapter to obtain the encrypted password or secret. You cannot create your own encrypted password or secret; you must use a system-generated password or secret.Example 1 (unencrypted password)host1(config-line)#password 0 mypassword Example 2 (secret)host1(config-line)#password 5 bcA";+1aeJD8)/[1ZDP6Example 3 (encrypted password)host1(config-line)#password 7 dq]XG`,%N"SS7d}o)_?YUse the no version to remove the password. By default, no password is specified.show line vtyUse to display the configuration of a vty line.Field descriptionsaccess-class - access-class associated with the vty linedata-character-bits - number of bits per character7 - setting for the standard ASCII set8 - setting for the international character setexec-timeout - time interval that the terminal waits for expected user inputNever - indicates that there is no time limitexec-banner - status for the exec banner: enabled or disabled. This banner is displayed by the CLI after user authentication (if any) and before the first prompt of a CLI session.motd-banner - status for the MOTD banner: enabled or disabled. This banner is displayed by the CLI when a connection is initiated.login-timeout - time interval during which the user must log in.Never - indicates that there is no time limitExamplehost1#show line vty 0 no access-class in data-character-bits 8 exec-timeout 3w 3d 7h 20m 0s exec-banner enabled motd-banner enabled login-timeout 30 seconds Configuring AAA Authentication and AAA AuthorizationBefore you configure AAA authentication and AAA authorization, you need to configure a RADIUS and/or TACACS+ authentication server. Note that several of the steps in the configuration procedure are optional. To configure AAA new model authentication and authorization for inbound sessions to vty lines on your system:Specify AAA new model authentication.host1(config)#aaa new-modelCreate an authentication list that specifies the type(s) of authentication methods allowed.host1(config)#aaa authentication login my_auth_list tacacs+ line enable(Optional) Specify the privilege level by defining a method list for authentication.host1(config)aaa authentication enable default tacacs+ radius enable(Optional) Enable authorization, and create an authorization method list.host1(config)aaa authorization commands 15 Boston if-authenticated tacacs+(Optional) Disable authorization for all Global Configuration commands.host1(config)#no aaa authorization config-commandsSpecify the range of vty lines.host1(config)#line vty 6 10 host1(config-line)# (Optional) Apply an authorization list to a vty line or a range of vty lines.host1(config-line)#authorization commands 15 BostonSpecify the password for the vty lines.host1(config-line)#password xyz Apply the authentication list to the vty lines you specified on your system.host1(config-line)#login authentication my_auth_listaaa authentication enable defaultUse to allow privilege determination to be authenticated through the TACACS+ or RADIUS server. This command specifies a list of authentication methods that are used to determine whether a user is granted access to the privilege command level.The authentication methods that you can use in a list include these options: radius, line, tacacs+, none, and enable.To specify that the authentication should succeed even if all methods return an error, specify none as the final method in the command line.Requests sent to a TACACS+ or RADIUS server include the username that is entered for login authentication.If the authentication method list is empty, the local enable password is used.Examplehost1(config)#aaa authentication enable default tacacs+ radiusUse the no version to empty the list.aaa authentication loginUse to set AAA authentication at login. This command creates a list that specifies the methods of authentication.Once you specify aaa new-model as the authentication method for vty lines, an authentication list called "default" is automatically assigned to the vty lines. To allow users to access the vty lines, you must create an authentication list and either:Name the list "default."Assign a different name to the authentication list, and assign the new list to the vty line using the login authenticationcommand.The authentication methods that you can use in a list include these options: radius, line, tacacs+, none, and enable.The system traverses the list of authentication methods to determine whether a user is allowed to start a Telnet session. If a specific method is available but the user information is not valid (such as an incorrect password), the system does not continue to traverse the list and denies the user a session.If a specific method is unavailable, the system continues to traverse the list. For example, if tacacs+ is the first authentication type element on the list and the TACACS+ server is unreachable, the system attempts to authenticate with the next authentication type on the list, such as radius.The system assumes an implicit denial of service if it reaches the end of the authentication list without finding an available method.Examplehost1(config)#aaa authentication login my_auth_list tacacs+ radius line noneUse the no version to remove the authentication list from your configuration.aaa authorizationUse to set the parameters that restrict access to a network.Use the keyword exec to determine if the user is allowed to run User Exec mode commands. The commands you can execute from User Exec mode provide only user-level access.Use the keyword commands to run authorization for all commands at the specified privilege level (0- 15). See Table 6-1 for a description of privilege levels.You can enter up to three authorization types to use in an authorization method list. Options include: if-authenticated, none, and tacacs+.Note: For information about TACACS+, see the ERX Broadband Access Configuration Guide, Chapter 4, Configuring TACACS+.Authorization method lists define the way authorization is performed and the sequence in which the methods are performed. You can designate one or more security protocols in the method list to be used for authorization. If the initial method fails, the next method in the list is used. The process continues until either there is successful communication with a listed authorization method or all methods defined are exhausted.Examplehost1(config)#aaa authorization execUse the no version to delete method list.aaa authorization config-commandsUse to reestablish the default created when the aaa authorization commands command was issued.After the aaa authorization commands command has been issued, aaa authorization config-commands is enabled by default, which means that all configuration commands in Exec mode are authorized.Examplehost1(config)#aaa new-model host1(config)#aaa authorization command 15 parks tacacs+ none host1(config)#no aaa authorization config-commandsUse the no version to disable AAA configuration command authorization.aaa new-modelUse to specify AAA new model as the authentication method for the vty lines on your system.If you specify AAA new model and you do not create an authentication list, users will not be able to access the system through a vty line.Examplehost1(config)#aaa new-modelUse the no version to restore simple authentication.authorizationUse to apply AAA authorization to a specific vty line or group of lines.Use the exec keyword to apply this authorization to CLI access in general.Use the commands keyword to apply this authorization to user commands of the privilege level you specify.You can specify the name of an authorization method list; if no method list is specified, the default is used.After you enable the aaa authorization command and define a named authorization method list (or use the default method list) for a particular type of authorization, you must apply the defined list to the appropriate lines for authorization to take place.Examplehost1(config)#line vty 6 host1(line-config)#authorization commands 15 sonnyUse the no version to disable authorization.lineUse to specify the virtual terminal lines.You can set a single line or a range of lines. The range is 0-19.Examplehost1(config)#line vty 6 10 Use the no version to remove a vty line or a range of lines from your configuration; users will not be able to run Telnet, SSH, or FTP to lines that you remove. When you remove a vty line, the system removes all lines above that line. For example, no line vty 6 causes the system to remove lines 6 through 19. You cannot remove lines 0 through 4.login authenticationUse to apply an authentication list to the vty lines you specified on your system.Examplehost1(config-line)#login authentication my_auth_listUse the no version to specify that the system should use the default authentication list.passwordUse to specify a password on a line or a range of lines if you specified the line option with the aaa authentication login command.If you enable password checking but do not configure a password, the system will not allow you to access virtual terminals.Use the following keywords to specify the type of password you will enter:0 (zero) - unencrypted password5 - secret7 - encrypted password
What is the error 401 402 403 404 405?
They're HTTP status codes. They are nothing but the errors in HTTP. The error codes of 4xx are called client errors which are caused by some mistakes done my the user. They error codes mean: 401 - Wrong Authentication 402 - Requires some Payments to be done 403 - Authentication required, no public access 404 - Web page does not exist/Required content not found 405 - Method of sending data is not allowed
Which authentication method uses a challenge and a response to authenticate the user over the network?
CHAP
Which authentication method sends a challenge to the client that is encrypted and then sent back to the server?
chap
What is default authentication method while creating new web application project?
Windows authentication is the default authentication method when you create a new Web application project.
What wireless authentication method allows the use of a backend authentication server?
EAP
What is the default authentication method according to the 802.11?
Open system authentication (default).
What is a method for confirming users identities?
Authentication
What is multicast authentication?
multicast authentication is the effective method of delivering data from sender to multiple receivers..
What is true about biometrics as an authentication method?
computer scientists are always trying to improve biometric authentication methods
What kind of authentication method is kerberos?
It's a mutual authentication; it verifies both user and sender of the ticket using symmetric keys.
What method of authentication requires a smart card and a PIN to provide more secure access to company resources?
two-factore authentication
Authentication of any electronic record by a subscriber by means of electronic method or procedure is called?
Authentication of any electronic record by a subscriber by means of electronic method or procedure is called digital signature.
What is Passport Authentication in Aspnet?
It is a centralized authentication service provided by Microsoft.This method of authentication uses Microsoft's Passport service to authenticate users. When you use Passport authentication, a user must have a valid Passport account to access the application.
