Mark possible connection states in the connection tracking table.

In the context of connection tracking in networking, particularly in firewalls and routers like those used in MikroTik, the connection tracking table is essential for maintaining the state of network connections. Each state corresponds to specific points in the connection lifecycle.

The state labeled as "Related" represents a situation where a new connection is initiated that is related to an existing connection, typically in connection tracking protocols like TCP. For example, this can happen when a new data stream is established as a result of an existing connection, such as a reply to a request made in a prior established connection. The "Related" state allows the firewall to track such connections more effectively, ensuring that associated packets are allowed through.

Understanding the role of this state is crucial for ensuring proper functioning in dynamic networking environments, where new connections can arise from established ones (like passive FTP connections). Therefore, identifying a connection as "Related" signifies it is part of a larger interaction, helping to manage and secure the flow of data appropriately.

Other states like "Closed," "Syn," and "Established" do have significance in the connection lifecycle but do not capture the aspect of relatedness to existing connections. "Closed" indicates no connection exists, "Syn" is part of the handshake to establish a