dB of sound pressure level (dB SPL) is defined as: 20 log10 p1/p0 where p1 is actually measured sound pressure level of a given sound, and p0 is a reference value of 20Î¼Pa, which corresponds to the lowest hearing threshold of the young, healthy ear.
The outside refers to the external-facing network interface, the one that receives ingress traffic. In the real world, it is not the case that NAT is simply using a single outside IP; translating traffic into internal IPs and ports. That's what your Linksys router does. Key Terms To Understanding NAT and PAT: NAT Short for Network Address Translation, an Internet standard that enables a local-area network (LAN) to use one set of IP addresses for internal traffic and a second set of addresses for external traffic. PAT Short for port address translation, a type of network address translation.
Two network-based protocols are commonly used: the Network Time Protocol (NTP), and the Precision Time Protocol (PTP). Both protocols, when used in substations, work through the exchange of messages over Ethernet. NTP and PTP can compensate for propagation delay through bidirectional communication. NTP is a more established standard and is widely used, but PTP offers greater performance through the use of special networking hardware.