Does encryption have a significant impact on traffic packet size?

Question

Web traffic analysis

I'm wondering how much encryption changes the size of traffic packets

Answer 1

Here is an example of overhead calculation when using IPv4 over GRE over IPSec (over IPv4). It is difficult to judge how "significant" these 56-76 bytes are without knowing the criteria for evaluating "significance".

Answer 2

It depends on what, but in general, yes - the packet is encrypted by being encapsulated in another packet - the size grows by the size of the service information.

Answer 3

As an option, collect statistics before and after encryption, for example with the command:
Perhaps with another suitable tool or analyze the result of tcpdump'a.