I haven't tried comparing both. I don't have much resources. All I can say is that using icmptunnel, one couldn't differentiate whether it's using tunnel or dir

I haven't tried comparing both. I don't have much resources. All I can say is that using icmptunnel, one couldn't differentiate whether it's using tunnel or direct internet. Hence ICMP tunneling was very fast. Although I'm interested in comparison as well :)