GCIA: GIAC Certified Intrusion AnalystDemo

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QuestionQ473

Application Protocols

You are a Network Administrator for NetTech Inc. The company operates a Windows Server 2008 domain-based network. The network includes a Windows Server 2008-based, two-node Network Load Balancing (NLB) cluster named Info.nettech.com. The cluster provides high availability and load balancing for the company intranet website.

You discover that users can view the NLB cluster in Network Neighborhood. Users can connect to various services by using Info.nettech.com. The cluster has one port rule configured to distribute all TCP/IP traffic equally across the cluster nodes.

You want to configure the cluster to accept only HTTP traffic. What should you do to accomplish this task?

Each correct answer represents part of the solution.

Choose two
  • A Create a new port rule to allow TCP port 110.
  • B Reconfigure the Network Load Balancing (NLB) cluster.
  • C Delete the default port rules by using Network Load Balancing cluster console.
  • D Create a new port rule to allow TCP port 80.
Explanation

NLB port rules determine which TCP/IP ports the cluster handles. Removing the broad default rule that covers all TCP/IP traffic prevents non-HTTP services from being accepted. Adding a TCP port 80 rule permits HTTP traffic while retaining load balancing across the nodes; port 110 is used for POP3, not HTTP.

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