2.6 Using IP Addresses

Question 1

SSL VPN

Answer 1

Secure sockets layer Virtual Private Network

Uses ssl/TLS protocol (tcp/443)
- avoids running into most firewall issues (because commonly used protocol in browsers as well)

No big VPN clients
- remote access communication

Authenticate users
- no requirements for digital certificates or shared passwords

Can be run from a browser or from a VPN client (on operating system)

• username
• password
• IP you want to connect to

Question 2

Aka Client to Site VPN

Answer 2

Aka remote access VPN

Requires software on user device
(encr)
Computer ————vpn concentrator (decrypts)——-corporate network

Reverse in the other direction (encrypted by concentrator, decrypted by PC)

Question 3

LAN

Answer 3

Local area network
- group of devices in the same broadcast domain

• all devices on one switch

Question 4

VLAN

Answer 4

Separates LANs logically by broadcast instead of physically

Serves as one massive switch which separates the LANs ( by broadcast) instead of having multiple switches

Question 5

VLAN configuration

Answer 5

Each individual VLAN can talk within itself (red to red) but cannot cross over to other VLANs (red cannot communicate with Blue)

Question 6

NAT

Answer 6

Network address translation

20 billion devices connected

Ipv4 supports 4.29 billion addresses