Basic information about TCP/IP addresses

[The Tech]

Bismillah,

IP addresses is just a number given to your computer, just like house address number.

Whever you are on the internet, connected to a phone line, or cable, you will have an IP address and you are exposed to the internet.

Your IP address has four octanes. ex: 172.17.1.100

Later i'll show you how to get your IP.

[The Tech]

To get your IP address:

Click Start,
Click Run,

Type: CMD
Click OK

In the black screen (DOS prompt after C:\) type the word:ipconfig
That will bring you a list of numbers. One of them is your IP address.

If your IP address looks like: 169.254.x.x this ALWAYS means you are NOT connected to the internet. That IP is given out by windows XP by default.

Your IP should look like: 192.168.x.x, or 172.17.x.x
When you see that, that means you are on the net.

There are different classes for the how the IP addresses look like. You don't have to know this, but if you wanted to, the IP addresses are 3 classes:
A, B, and C

Class A looks liek this: 10.10.10.25
Class B looks liek this: 10.10.1.2
Class C looks liek this: 10.3.6.25

[The Tech]

Another way to know if you are connected on the internet, is to ping.

Can you ping outside?
Means can you reach any website from outside on the internet?

Example: To know so, type in the Dos prompt: ping yahoo.com

You should get reply like the follwoing:

Pinging yahoo.com [216.109.112.135] with 32 bytes of data:

Reply from 216.109.112.135: bytes=32 time=87ms TTL=44
Reply from 216.109.112.135: bytes=32 time=85ms TTL=44
Reply from 216.109.112.135: bytes=32 time=86ms TTL=44
Reply from 216.109.112.135: bytes=32 time=85ms TTL=44

Ping statistics for 216.109.112.135:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 85ms, Maximum = 87ms, Average = 85ms

If you get reply, it means you are connected to yahoo.com, if it fails and times out, it means you are not online.

TRY IT  


That's it!.

[The Tech]

Another way to know if you are connected on the internet, is to ping.

Can you ping outside?
Means can you reach any website from outside on the internet?

Example: To know so, type in the Dos prompt: ping yahoo.com

You should get reply like the follwoing:

Pinging yahoo.com [216.109.112.135] with 32 bytes of data:

Reply from 216.109.112.135: bytes=32 time=87ms TTL=44
Reply from 216.109.112.135: bytes=32 time=85ms TTL=44
Reply from 216.109.112.135: bytes=32 time=86ms TTL=44
Reply from 216.109.112.135: bytes=32 time=85ms TTL=44

Ping statistics for 216.109.112.135:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 85ms, Maximum = 87ms, Average = 85ms

If you get reply, it means you are connected to yahoo.com, if it fails and times out, it means you are not online.

TRY IT  


That's it!.