Section 7 Flashcards
Router
A box that connects network IDs
Routing table
Address, Subnet, Gateway, Interface
Port number
Set by the type of application that you’re using
Port numbers 0 to 1023
are called well known ports
Source port number
is generated as an ephemeral port by the computer itself
Network Address Translation (NAT)
a way to map multiple private addresses inside a local network to a public IP address before transferring the information onto the internet.
Static NAT (SNAT)
all incoming addresses for one particular IP address
go to one particular device.
Small Office Home Office (SOHO)
routers ship with NAT enabled
Port Forwarding
directing traffic from the outside world to the appropriate server inside a local TCP/IP network.
Port Range Forwarding
used to forward an entire range of ports. Ex. video game
Port Triggering
dynamic form of port forwarding used when port forwarding needs to reach multiple local computers
File Transfer Protocol (FTP)
FTP: Port 20, 21
SOHO DMZ
Forwarding of ports
Places device outside of protection of router
SOHO Router
Gateway router
Enterprise Router
Cisco Router
