Which term is used to mark traffic for routing, QoS, or filtering decisions?

Which term is used to mark traffic for routing, QoS, or filtering decisions?

• A. Mangle
• B. Firewall
• C. NAT
• D. Masquerade

Answer: (A)

The practice of tagging traffic to guide later decisions is done with marks, applied by the mangle tool. In RouterOS, a mangle rule assigns a mark to a packet or connection, and those marks are then used to influence routing choices (which routing table to use), QoS/classification (which queue or policy to apply), and filtering actions later in firewall or NAT rules. The other options describe actions rather than the tagging process: firewall handles filtering, NAT translates addresses, and masquerade is a NAT method for hiding internal addresses. So the term used to mark traffic for routing, QoS, or filtering decisions is mangle.

The practice of tagging traffic to guide later decisions is done with marks, applied by the mangle tool. In RouterOS, a mangle rule assigns a mark to a packet or connection, and those marks are then used to influence routing choices (which routing table to use), QoS/classification (which queue or policy to apply), and filtering actions later in firewall or NAT rules. The other options describe actions rather than the tagging process: firewall handles filtering, NAT translates addresses, and masquerade is a NAT method for hiding internal addresses. So the term used to mark traffic for routing, QoS, or filtering decisions is mangle.