Little or big problem ?

Kevin Darcy kcd at daimlerchrysler.com
Wed Mar 24 23:59:40 UTC 2004


arnaud wrote:

>Kevin Darcy wrote:
>  
>
>>nospam wrote:
>>=20
>>=20
>>    
>>
>>>Hello,
>>>
>>>i manage at home my own name server on slackware 9.1.
>>>My domain name is ad-lx.net (i post for it there are 3 weeks ago).
>>>
>>>All seems work fine, but i think it's "lame". If i understand this, it=20
>>>mean's that my public address ip is delegate to the router and it=20
>>>translate the port 53 (udp and tcp) to my gateway behind.
>>>
>>>That what this url tell me : http://www.afnic.fr/outils/zonecheck
>>>
>>>"Incoherence between the name corresponding to address IP and that of=20
>>>the server"
>>>
>>>      
>>>
>>=20
>>I think what the tool is complaining about is that the IP address of=20
>>your server doesn't map back to the expected name:
>>=20
>>% dig -x 82.224.132.15 ptr
>>=20
>>; <<>> DiG 9.2.2rc1 <<>> -x 82.224.132.15 ptr
>>;; global options: printcmd
>>;; Got answer:
>>;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63236
>>;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2
>>=20
>>;; QUESTION SECTION:
>>;15.132.224.82.in-addr.arpa. IN PTR
>>=20
>>;; ANSWER SECTION:
>>15.132.224.82.in-addr.arpa. 86400 IN PTR=20
>>michelet-8-82-224-132-15.fbx.proxad.net.
>>=20
>>    
>>
>
>Ok. So My ISP offers me the possibility to change the reverse ip. I give=20
>it for exemple : gateway.ad-lx.net (ns1). Is it correct ?
>
>After changing it, normally :
>
> > ;; ANSWER SECTION:
> > 15.132.224.82.in-addr.arpa. 86400 IN PTR
> > gateway.ad-lx.net.
>
>What are the benefits with this change ?
>
Not a whole lot, in my opinion. Some think that having reverse records 
for all IP addresses makes things look more "professional" or "tidier". 
Apparently the author(s) of that zone-checking tool thought so.

                                                                         
                           - Kevin




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