Problem
1. You want to allow only machines in your local network to access your intranet server. Briefly explain how you may design firewall policies.
2. You want to allow only the computers connected to your organization's office local area network accessing the intranet site web server INTR_SRV1. What do you need to set up to achieve this? What configuration(s) would be necessary if you want to save monthly access log report in your system management server myLinux2022?
3. Your new database administrator account name is "dbAdmin". When it is used to access the database "myRDSDB1" in AWS, alert shows 'Access Denied'. What may cause the issue? What are the command(s) to verify the account's current access privilege and grant the delete permission?
4. In a job interview, you are asked how to reset iptables and troubleshoot because network traffic is blocked. Please present your plan and major steps/commands you would follow/use.
5. One user insisted that an mail never reached her mailbox. Please analyze and list the major steps to investigate and troubleshoot.