how to implement barcode system in c# Questions and Answers in Visual C#.NET

Creator Quick Response Code in Visual C#.NET Questions and Answers

Questions and Answers
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selected traffic can pass from the publicly accessible servers to the internal network. The company must implement the most secure solution possible. What perimeter network configuration should the organization implement a. Configure a bastion host firewall. b. Configure a three-leg perimeter network. c. Configure a back-to-back perimeter network with two firewalls from the same vendor. d. Configure a back-to-back perimeter network with two firewalls from different vendors.
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D is correct. A back-to-back firewall configuration with firewalls from two different vendors is the most secure configuration. Even if attackers get past one firewall, they will need to use a different attack to bypass the second firewall. Both the bastion host and a three-leg perimeter use a single firewall, which is less secure than multiple firewalls. In addition, the bastion host configuration does not provide any isolation between the publicly accessible servers and the internal network.
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Lesson 4 Review
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1. Your organization has just deployed an ISA Server computer as a firewall. The security policy for your organization requires that all settings on the ISA Server computer be configured as securely as possible. After you implement a secure configuration, users report that they can no longer access a streaming media site. Access to this site is critical for the company, so you must enable access to the site. What security setting should you change to enable access to the site a. Enable IP routing b. Disable all filtering based on IP options c. Disable filtering of IP fragments d. Disable filtering based on the source-routing IP options
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C is correct. Streaming media frequently requires the use of IP fragments, so filtering all IP fragments may block access to streaming media content. Enabling or disabling IP routing will not affect access to streaming media. Streaming media also does not require any IP options, including the source-routing options.
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2. You have configured intrusion detection to detect when the ISA Server interfaces are being exposed to a port scan. You configure the alert to send an e-mail to your account when the alert is triggered. You are now receiving a high number of e-mails from the ISA Server computer. You want to reduce the number of e-mails sent to your account, but still want to know when there are frequent port scans of your ISA Server. What should you do
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7
Configuring ISA Server as a Firewall
On the Intrusion Detection Common Attacks Property page, you can increase the number of attacks before an alert is triggered. In this way, you will not receive as many e-mails, but will still receive an e-mail after multiple attacks have been detected.
3. You have configured ISA Server 2004 as a bastion host. You are concerned about the security of your DNS database. One of the internal DNS servers must be accessible from the Internet but you want to ensure that zone transfers will never be allowed to clients that are not on your internal network. How will you accomplish this
On the General Configuration settings on the Intrusion Detection DNS Attacks properties page, Select Enable Detection And Filtering of DNS Attacks and ensure that DNS Zone Transfers is enabled.
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Lesson 5 Review
1. You are the ISA Server 2004 administrator for your organization. You create a Web publishing rule to allow access to your Web site. You want to ensure that no one from the external network can post any content or create any unauthorized links to other pages. You want to configure this on the ISA Server that you used to publish the Web site. What must you do
Configure your Web publishing rule s HTTP Policy to block the POST and LINK Methods.
2. You have deployed ISA Server and are using it as a proxy server for all client connections to the Internet. All users are allowed to use HTTP, HTTPS, and FTP to access the Internet. You review the firewall logs on the computer running ISA Server and notice that some users are accessing Web sites that contain information that is not acceptable under the organization s security policy. You need to block the user access to these Web sites based on the URL that the users type into Internet Explorer. How can you do this a. Configure the HTTP policy to block access based on signatures. b. Configure the HTTP policy to block access based on methods. c. Configure the HTTP policy to block access based on headers. d. Configure the HTTP policy to block access based on extensions.
A is correct. To block access to Web sites based on the URL typed by the user, configure the HTTP policy to block access based on the signatures that you want to block.
3. You use the Edge Firewall network template to configure Internet Access for your internal users. You used the template to enable HTTP, HTTPS, and FTP access to the Internet. Your users need to place files on an FTP server at a partner FTP site. Now your users report that they are unable to put files on the FTP server. What must you do to correct the problem
You must modify the configuration of the FTP Web filter to enable the users to upload FTP content. By default, the FTP policy only allows downloads. To modify the FTP policy, right-click the access rule and click Configure FTP You must clear the Read Only option. .
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