2.6 - Using IP Addresses

Question 1

SSL VPN (Secure Sockets Layer VPN)

Answer 1

• Uses common SSL/TLS protocol (tcp/443)
• Avoids running into most firewall issues
• No big VPN clients
• Usually remote access communication
• Authenticate users
• No requirement for digital certificates or shared passwords
(like IPSec)
• Can be run from a browser or from a (usually light) VPN client
• Across many operating systems

Question 2

Configuring VLANS

Answer 2

• Local Area Networks

* A group of devices in the same broadcast domain

Question 3

NAT (NetWork Address Translation)

Answer 3

• It is estimated that there are over 20 billion devices
connected to the Internet (and growing)
• IPv4 supports around 4.29 billion addresses
• The address space for IPv4 is exhausted
• There are no available addresses to assign
• How does it all work?
• Network Address Translation
• This isn’t the only use of NAT
• NAT is handy in many situations

Question 4

LANs

Answer 4

• Local Area Networks

* A group of devices in the same broadcast domain

Question 5

Virtual Lans

Answer 5

• Virtual Local Area Networks
• A group of devices in the same broadcast domain
• Separated logically instead of physically

Question 6

Client-to-Site VPNs

Answer 6

• Also called “remote access VPN”
• Requires software on the user device
• May be built-in to existing operating system