Bits & Bytes: Week 4, IV and V (NAT, VPNs, Proxies) Flashcards
ACRONYM:
NAT
Network Address Translation
This technology allows a gateway (ex. router, firewall) to rewrite the source IP of an outgoing IP datagram while retaining the original IP to be used in the response
Network Address Translation
Using NAT to hide a computer’s IP address is referred to as what?
IP Masquerading
What is the term for when outbound traffic from many computers is funneled through one IP address using NAT?
One to many NAT
What is a transport layer technique where the ephemeral source port chosen by a client is the same port used by the router?
Port Preservation
This is a NAT technique where specific destination ports can be configured to always be delivered to specific nodes
Port Forwarding
ACRONYM:
5 RIR
five regional internet registries
What is the name for the group responsible for assigning IP address blocks to organizations within their designated, geographic locations?
five regional internet registries
What two technologies are combined to create a workaround to the depletion of IPv4 addresses?
NAT and non-routable address space
this technology allows for the extension of a private or local network to hosts that might not be on that local network
VPNs
ACRONYM:
VPN
Virtual Private Network
VPN’s are a _______________ which means they can provision access to a network that is not locally available
A tunneling protocol
What is a technique where more than just a username and password are required?
Two factor authentication
This is a server that acts on behalf of a client in order to access another service
a Proxy service
What are four main things a proxy can offer? (Hint: PICAS)
Performance Increase, Content filtering, Anonymity, Security
