About reverse DNS

fragment

Solid State Member
Messages
14
Hi.

My Internet connection has no Reverse DNS.
How can I make (force) it, to have it?
I'm connected over LAN.

Thank you.
 

root

Site Team
Staff member
Messages
8,181
Location
UK
how do you mean there is no reverse lookup?

if someone (outside of your home) type nslookup [ipaddress] what do they see?

for me they would see
host[oct1]-[oct2]-[oct3]-[oct4].in-addr@btopenworld.com because my connection is with BT.
 

fragment

Solid State Member
Messages
14
Look at this :

>ping google.com

Pinging google.com [216.239.39.99] with 32 bytes of data:

Reply from 192.168.10.1: Destination port unreachable.
Reply from 192.168.10.1: Destination port unreachable.
Reply from 192.168.10.1: Destination port unreachable.
Reply from 192.168.10.1: Destination port unreachable.

Ping statistics for 216.239.39.99:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
----

192.168.10.1 is a gateway (router).

Whatever I ping, destination port is unreachable.
I can't connect to IRC, not to P2P networks, can't download with bit torrents. But other's fine.
 

fragment

Solid State Member
Messages
14
OK. Here's what I found out.
It's not possible to establish a connection on a *strange* port with the local (network card) IP. But it is with the looopback IP (127.0.0.1).

Let me explain with an example :

1.
I can use MSN Messenger. For the local IP it uses 127.0.0.1 and for the remote one, just one with a strange port. So it works fine.

2.
IRC. It uses a network card local IP (192.168.10.30 !), not the loopback address 127.0.0.1 . The remote one is just one IRC server (for example 213.143.66.30:6667). And it does not work : >>Network is unreachable<<.

So my finding is, that programs, that do not act like a server (like MSN Messenger) work, and programs that DO act like a server, don't.

What can I do? I'm REALLY stuck now.
PLEASE help.
 
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