A Security Engineer has been tasked with the responsibility of troubleshooting incoming connections to a web server. This single web server is not accepting incoming connections from the internet, despite the fact that all other web servers are operating normally.
ACLs, security groups, and a virtual security appliance are all included in the design. Additionally, the Development team developed Application Demand Balancers (ALBs) to balance the load across all web servers. Traffic between web servers and the internet must pass via the virtual security appliance.
According to the Security Engineer, the following is true:
1. The security groups' rules are correct.
2. The network ACLs have the right set of rules.
3. The virtual appliance's rule set is right.
Which of the following are additional relevant troubleshooting elements in this scenario? (Select two.)