ping ttl times

Nocturnal

hey im doing a a project at the moment on windows,creating a fron ent to nmap and drawing a map of a network based on the results of the scan,Im trying to use the ttl times so that i can estimate where on the network a computer is sitting,i tried hping but it didnt seem to work too well for me,i need to be able to save the results of the scan to a text file preferably as xml,this is why i cant use just the basic ping command,any help will be greatly appreciated...

Sneaky_Russian

write your own ping code/program

a quick google pulls up plenty of source code you can use as reference.

MrScruff

Why don't you pipe the output to a file and then parse that?

eg.

ping www.google.ie > g.txt

Sneaky_Russian

i was gonna suggest that as it's probobly the simplest.

the reason i didn't is because i pressume that there'll be a lot of "ping'ing" going on so that would be grossly inificient. for a single or infrequent ping request, maybe i'd think of doing that.

plus having your own ping code will make your application alot more flexible.

college project i presume?
what language are you using?

Nocturnal

Ya its my final year project,Im doing it through java,im on a bit of a timescale so i'd prefer to use something thats allready written then trying to create my own ping program!Thanks for the suggestions anyways lads,il go and see what i can do now and let ye know how i get on.

MrScruff

Java networking is apparently too high level to perform a ping.

Here is a simple class that executes a ping command and prints the output.
Writing a ping class that does a regular expression on the results and returns
the array of return times is left as an excercise for the reader.

import java.io.*;
public class gnip
{
   public static void main(String[] args)
   {
      try
      {
         Runtime rt = Runtime.getRuntime();
         String s = "C:\\windows\\system32\\ping.exe www.google.com";
         Process p = rt.exec(s);
         InputStream is = p.getInputStream();
         InputStreamReader isr = new InputStreamReader(is);
         BufferedReader br = new BufferedReader(isr);

         String line;
         while ((line = br.readLine()) != null)
         {
            System.out.println(line);
	     }
      }
      catch (Exception ex)
      {
         ex.printStackTrace();
      }
   }
}

What is your project about anyway?

NutJob

Thats true java will not let u create the raw socket functionality you need for ping. I had to use the approach below to acomplish the same thing.


Plus the code posted below only requires you to parse a stream for what you want.