My ISP doesn't have a reverse DNS. Another mark for security ...

Johnny

.. Commodore ..
Political User
Joined
Jan 12, 2004
Messages
5,015
#1
I was browsing http://www.grc.com and came across this in the shield's up page. I think it's pretty cool. No reverse DNS means I am somewhat invisible :)

Anyone else have this ???



[FONT=Arial,Helvetica,Sans-Serif,MS Sans Serif][SIZE=+1]Your Internet connection has no Reverse DNS[/SIZE][/FONT]

[FONT=Verdana,Arial,Helvetica,Sans-Serif,MS Sans Serif]Many Internet connection IP addresses are associated with a DNS machine name. (But yours is not.) The presence of "Reverse DNS", which allows the machine name to be retrieved from the IP address, can represent a privacy and possible security concern for Internet consumers since it may uniquely and persistently identify your Internet account — and therefore you — and may disclose other information, such as your geographic location. When present, reverse DNS is supported by Internet service providers. But no such lookups are possible with your current Internet connection address (**.**.***.**). That's generally a good thing.[/FONT]

 

kcnychief

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Apr 8, 2005
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#2
Although it's been awhile, last I checked I had Reverse DNS going on at home. But I believe you have Comcast and have recently subscribed, so maybe I will check when I get home to see if they changed that...
 

Johnny

.. Commodore ..
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Joined
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#3
Yeah, I have comcast, KC. I think it is a good thing that they do not have that. With the reverse dns they can get down to the town you live in, or town close to wear you live, depending on where the control center is. I remember with verizon it would say my IP, CO, state, and town I live in.

This is a good thing. With just the windows firewall I am stealth and my isp doesn't have reverse dns. I like security :)
 

kcnychief

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#4
Even with just an IP you can do a tracert and get a general idea of where they are, not close down to city/state though :)
 
Joined
Feb 2, 2004
Messages
7,027
#5
Not having reverse dns is in breach of a number of RFC standards. In europe at least RIPE NCC require all active IP's to have reverse dns associated or they will take the ips away from you.

In this case Steve at grc is talking out of his behind.
 

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