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DNS Verification Error

by @ 12:55 pm
Filed under: internet — Tags:

Recently it was brought to my attention that the domain name hashemian.com has a DNS error associated with it. The domain's DNS is hosted with its registrar as many registrars provide basic DNS service for free. This service generally consists of two name servers with varying degrees of restrictions to configure zones and records.

Concerned, I headed to dnscheck.pingdom.com to verify this for myself and indeed the tool does show an SOA records inconsistency error for the domain along with a couple of warnings.

dns soa error

The warnings are attributed to the fact that the name servers do not have reverse addresses (PTR records) associated with them. Having reverse addresses is not a requirement but it is recommended.

Having consistent SOA (Start Of Authority) records on all name servers is however required. Except that in this case the inconsistency reported was only due to upper and lower case differences between the records on the two name servers and that gets into a bit of an unknown territory.

According to this RFC document: Domain Name System (DNS) names are "case insensitive". That is stated right at the top of the document in the Abstract section.

Going by the RFC, Pingdom's DNS tool is incorrect in flagging the SOA records with differing letter cases as error. One can label the DNS management work at the registrar as sloppy or clumsy, but this discrepancy should at best only rise to a warning level.

Network Solutions, More Like Network Problems

by @ 10:16 pm
Filed under: hacking,internet — Tags: ,

Network Solutions (netsol), the company behind domain names had a rough day today and it dragged its customers down with it. Apparently a DDoS attack knocked out their network making hosted web sites and DNS servers inaccessible. This site, while not hosted on netsol, does have its name servers hosted with them and so it had several outages while netsol was combating the attack.

I don't understand how a company like netsol could fall prey to such attacks. Netsol has been around for decades, they are the original Internic, the only domain provider back when domains were free. I'm sure they have deep pockets and lots of experts working for them. Surely they have fat enough pipes to absorb such attacks and leave plenty of capacity for their users. And to make matters worse, the company's social outlets like Facebook and Twitter were silent for hours during the outage.

Things seem to be back to normal now, but if these guys can't get it right, what hope is there for the rest of us?

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