DNS reverse lookup

[Martin]

Hi,
I am writing a program to examine a web servers log file. If the 
web server has the option for resolving the IP address off, as 
with Apache 1.3 default. Then I am faced with the problem of 
resolving the IP address into a host name, thus I want to do a 
reverse DNS lookup. I am writing this program in Java. So
1/ Is it possible to do a reverse DNS in Java code.
2/ I have tried the following code, and it does not work – 

InetAddress r; 
       String s; 

       try {                // use the address you are concerned 
with 
           r = InetAddress.getByName("192.122.98.61"); 
           s = r.getHostName();     
           System.out.println(s);
                     
           } 
               
           catch (UnknownHostException e)
           {
                System.out.println(e);
           }

3/ If it is not possible, how else can I do it?. I have tried to 
use Windows NT’s  - 
nslookup <ipaddress>.in-addr.arpa
and this doesn’t work either! Has this anything to do with the 
fact that I am behind a firewall??
Martin.
	




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