What Is Not A Variable That An Network Access Control List Can Filter Traffic With?

What is NOT a variable that a network access control list can filter traffic with?

• Packets use network-layer protocols.
• Packets use the transport layer protocol.
• The TCP/UDP port numbers of the source or destination are present in the packets.
• An Operating system that is used by the source or destination. 

Answer: The operating system used by the source or destination is not a variable that a network access control list can filter traffic with.

For the VPC which work as the firewall for traffic controlling the network access control list act as the operational layer of the security inside and outside of the subnets which are more than one. The network ACLs rules need to be similar to the security if you want to add the extra layer in a VPC for security. Some of the important points which we need to know about network ACLs are listed in the following:

• The VPC comes with the default adjustable ACL network, and it permits the inbound and outside IPv4 traffic which is also applied to the IPv6.
• The customized ACL network is also formed which is further connected with the subnet, and it can reject all the traffic whether it is inbound or outbound till the rules are added.
• Every subnet in the VPC is related to it. if we can’t associate the subnet then it will automatically associate with the default network ACL.
• The inbound and outbound rule for it is different and can be selected or rejected.
• It is stateless, a vice versa which means the responsibility for the allowed inbound work as the subject to the rule of outbound.
• It can also associate with multiple subnets, but the subnet is linked with only one network ACL at the same time, when it is associated with the subnet the first association is removed.
• Various rules are present for it and they are arranged in order from the lowest-numbered to the highest number rules which are 32766.