Ping command , Computer Network Security

In the early days when there were some dozen computers machine on the network, it was done individually but now as we have looked that there are millions of computers on the internet so how can we determine the number of computers connected to the internet. This is perform through probing the Internet. Now an automated tool is needed that tests to see whether the given computer is online or offline.

We see that 5 data packets of 64 bytes are sent to Google.com and 5 data packets are received. We see that ping has also shown some additional information such the IP addresses of sears.com, the sequence of packets and the times of transmission called as the round-trip time, as there is no packet loss so it seems that Google.com is connected to the internet.

PROBLEM WITH 'PING':

Ping, as a tool looks like to be simplistic. Now look what are the causes attached with ping. If ping does not view any responses from host machine it can not tell the reason of cause. Because one of the following reasons happen but ping will not specify the reason.

  • Remote computer may have a problem.
  • Local computer may have a problem.
  • Ping sometimes removed because of congestion.

Some computers or networks reject the ping messages. They do this to avoid removal of service of flooding attack. Inspite of these causes ping is still heavily used as a diagnostic tool. Network administrators need ping as soon as they learn about the failure.

 

711_ping command.png

Posted Date: 7/30/2012 5:03:59 AM | Location : United States







Related Discussions:- Ping command , Assignment Help, Ask Question on Ping command , Get Answer, Expert's Help, Ping command Discussions

Write discussion on Ping command
Your posts are moderated
Related Questions
PACKET SNIFFERS A packet network protocol analyzer is a network tool which collects copies of packets from network and analyzes them. It can give network administrator with valu

CONCEPT OF PACKET : Network systems splits data in small junks or blocks known as packets, which they send individually. Why we required packets rather than bits? The answer to


#Under what circumstances would the use of a SecSDLC be more appropriate than an SDLC?

FRAGMENT IDENTIFICATION: IDENT field in every fragment matches IDENT field in real datagram. Fragments from different datagrams may arrive out of order and still be saved out.

(a) Explain the importance of the Euler Totient function in Cryptography. Calculate Euler Totient function value, φ(1280). (b) Explain the role of the Authentication Server (

(a) Using Fermat's theorem, find 3 201 mod 11. (b) Explain how the Diffie-Hellman key agreement protocol works and what its purpose and main properties are. Consider a Dif

Confidentiality Confidentiality of information ensures that only those with sufficient privileges may access specific information. When unauthorized individuals can access inform

Question: (a) For the bit stream 010011, sketch the waveforms for each of the code indicated. Assume the following: the signal level for the previous bit for NRZI was a 1

Symmetric Encryption This encryption method makes use of same “secret key” to encipher and decipher the message and it is termed as private key encryption. This type of encrypti