What is the technique of calculating the length of an IP packet in TrafMeter?
Every IP packet has a field in the header named “Total length”. It contains the number of bytes in the entire packet, including the header. TrafMeter uses only the value obtained in this field to calculate the length of IP packet. Q: I have created a filter with the rule from “Any address” to “Any address” with a mirrored flag enabled. The “sent bytes” cell displays a number that is very closely to the captured traffic but the “received bytes” cell shows zero. Incoming traffic isn’t counted. What’s wrong? A: You can’t split the traffic (sent & received) in the rule “from Any to Any”. Imagine that you stand at the side of a two-way road and you see car traffic. What cars are incoming and what cars are outgoing? You can’t answer because you need to get a reference point. Let’s decide, the cars to the city “A” are inbound traffic and the cars to the city “B” are outgoing traffic. Q: I have created a filter with the rule from “My computer” to “Any address” which only takes the ICMP packets
