5 Key Areas to Investigate for Resolving Network Access Issues in Computer Science

A Windows Server 2016 has recently been remotely joined to the domain by a network admin, and is now known as IISMARKETING01.redwood.local. When pinging the server using its Fully Qualified Domain Name (FQDN) the reply fails. When trying to remote access the server using the sa FQDN the session does not connect. Applying a divide and conquer approach, where would a network admin most likely begin to resolve this issue?

In order to resolve the issue, a network admin would most likely start investigating the following areas:

1. DNS Configuration: The network admin would ensure that the Domain Name System (DNS) is properly configured. They would check if the DNS server is set up correctly, and that it has the necessary DNS records, such as A records, for the server’s FQDN. The admin would confirm if the FQDN is correctly configured and resolves to the correct IP address.

2. Firewall Settings: The network admin would examine the firewall settings on the server to verify if the necessary ports, such as port 80 for HTTP or port 443 for HTTPS, are open and allowing remote access. They would confirm that the firewall is not blocking any inbound or outbound traffic that is essential for remote access.

3. Network Connectivity: The network admin would ensure that the server has a stable network connection and is connected to the network correctly. They would scan for any potential network issues, such as incorrect IP configuration or network cable connectivity problems.

4. Router and Switch Configuration: The network admin would check the router and switch configurations to ensure that they are correctly routing traffic and allowing connections to the server’s FQDN. They would inspect any access control lists (ACLs) or network policies that might be restricting access to the server.

5. Active Directory Configuration: The network admin would explore the Active Directory (AD) configuration to ensure that the server has successfully joined the domain. They would confirm that the server’s computer account is registered in AD, and that the necessary permissions and Group Policy settings are correctly applied.

By investigating these areas, the network admin can identify the potential cause of the issue and take appropriate steps to resolve it. It may be necessary to consult relevant documentation, network diagrams, and configuration files to gather additional information and perform troubleshooting steps accordingly.

More Answers:
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The Important Characteristics and Limitations of Standard IPv4 Access Control Lists (ACLs)

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