, : -- -- Bidirectional Forwarding Detection : 4 Port Forwarding: Cisco 03, 2018 50 0 2 4 SSH port forwarding Linux 25, 2020 4460 20 0 7 CEF (Cisco Express Forwarding) 24, 2020 1150 10 0 9 09, 2021 10 0 0 16
