DNS reverse lookup
James Hall-Kenney
James.Hall-Kenney at sytec.co.nz
Tue May 16 23:05:31 UTC 2000
Not to avoid the question but what is wrong with the apache binary
"logresolv"? (except perhaps the firewall issue?)
Cheers
James
> -----Original Message-----
> From: Martin [mailto:marty1110 at yahoo.co.uk]
> Sent: Wednesday, 17 May 2000 05:24
> To: comp-protocols-dns-bind at uunet.uu.net
> Subject: DNS reverse lookup
>
>
>
> 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.
>
>
>
>
>
> --Posted from EarthWeb Discussions. http://discussions.earthweb.com
>
>
>
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