Connection Technologies and IP Addressing CONNECTING TO THE INTERNET.

Connection Technologies and IP Addressing

CONNECTING TO THE INTERNET

ASYMMETRIC VS. SYMMETRIC• Asymmetric

• Download speed > Upload speed

• Technology limitation

• Symmetric

• Download speed = upload speed

FIBER

• Google

• Only a few cities

• 1000Mbps (1Gbps) symmetric

• fiber.google.com

SPEEDTEST• http://www.speedtest.net

IP ADDRESSES

Packets traveling over a network have a header that includes a source IP address and a destination IP address.

Every computer or device on a network has to have an IP address

An IP address is more like a phone number than a street address.

(334) 123-4567

192.168.101.45

IP addresses are a 32-bit binary number…

11000000101010000110010100101101

… that can be written in a 4-part number

192.168.101.45

Value of each Octet can be 0 thru 255

28 = 256

Network Managers can assign STATIC IP addresses to some or all computers on a network

Dynamic Host Control Protocol (DHCP)

IP addresses can be assigned dynamically by a server or router

EVERY WEBSITE HAS AN IP ADDRESS

206.16.212.91

157.166.248.10cnn.com

al.gov

URL IS A USER FRIENDLY REFERENCE TO AN IP ADDRESS ON THE INTERNET

When you type in a URL, a domain name server (DNS) matches that URL to the IP address to let your computer find the correct website.

FINDING A SITE’S IP ADDRESS

• http://www.domaintools.com

If the network you are on is connected to the internet, it has an public IP address visible to the internet.

INTERNET

Private Network

Public IP addresses are assigned by your ISP and may be static or dynamic

Static IPs are better for when you need remote access, such as gaming or remote desktop.

http://whatismyipaddress.com

Private IP Addresses cannot be assigned to computers on the internet, and computers on the internet cannot communicate directly with a private ip address.

• 10.0.0.0 – 10.255.255.255

• 172.16.0.0 – 17.31.255.255

• 192.168.0.0 – 192.168.255.255

A device that does network address translation (NAT) coordinates communication between your private ip address and a website or another computer or network on the internet.