Network Address Translation Flashcards Preview

Applied Networking Security > Network Address Translation > Flashcards

Flashcards in Network Address Translation Deck (18):
1

NAT translates _____ _____ between interfaces

L3 adresses

2

What does NAT do?

changes source IP on outbund packets and destination ip on inbound packets
Nat devices is often on a border router

3

What is nat used for?

allowing internal hosts to have private IP addresses to share a public ip address to access the internet
direct internet originating traffic to a specific host (eg. public web server)

4

Additionally NAT provides one layer of _____________ to your network.

Security

5

What are the 3 types of NAT?

Static (one-to-one)
Dynamic (one-to-one and not commonly deployed)
Overloading (many-to-one

6

What is Static NAT?

Manually map IP to IP

7

What is dynamic NAT?

- Automatically map IP to IP
- Typically a pool of available address

8

What is Overloading NAT?

- Automatically map many IPs to one IP
- Uses ports to track individuals from many

9

What is an inside local NAT address?

Actual IP address assigned to an inside host
Typically private

10

What is an inside Global NAT Address?

Outside view IP address of inside host after translation
Typically address of router connected to ISP

11

What is an outside local nat address?

Inside vie IP address of outside host after translation
Only when NAT from outside to inside

12

What is outside global?

actual ip address assigned to outside host

13

What is the included in the Nat configuration process?

NAT processed from inside to outside or vice versa
Configure interfaces as inside or outside Configure any required access lists Configure NAT rule(s) required for processing

14

___________specifies allowed IP for NAT rule

access list

15

For overloading configuration you need a public __ _______ and a Nat rule

Public IP address

16

Commands used to overview nat

sh ip nat translations
sh ip nat statistics

17

For Static NAT configuration:
you need to statically translate _____ IP port 80 to _____ _______ IP port 80

Public
Web server

18

How do you configure NAT Interfaces

enter config n=mode for that interface
use" ip nat inside" or "outside"