Category Archives: Domains

Сменил DNS сервера еще час назад, а он всё еще не работает. В чём проблема?

Система доменных имен (DNS) довольно инертна. Обычно чтобы полностью произошла смена DNS серверов требуются сутки. В первую очередь в этом виноваты интернет провайдеры. Их DNS сервера (которые Вы используете для работы в сети) кэшируют (запоминают) IP адреса для каждого домена при первом обращении и при последующих обращениях не пытаются их определить по всем правилам. Старые данные из кэша обычно удаляются через сутки. По этой же самой причине не рекомендуется изменять DNS сервера по несколько раз в день.

Что такое (первичные и вторичные) сервера имён?

Для поддержания работоспособности домена необходимо указать как минимум два сервера DNS. Сервера DNS хранят информацию о зоне и выдают эту информацию по запросам. При этом один из серверов DNS является первичным (primary), а остальные сервера, которых может быть от 1 до 12 для каждого домена называются вторичными (secondary). Все изменения о настройках зоны (домена) вносятся в первичный сервер DNS, а вторичные сервера DNS периодически обновляют свои базы данных, синхронизируя их с базой данных первичного сервера DNS.

Вы можете не вдаваться в эти подробности, если при регистрации домена у нас выберете опцию “использовать сервера регистратора” на странице списка NS-серверов. При этом Вы сможете управлять вашим доменом через наш web-интерфейс.

Могу ли я, в целях сохранения анонимности, ввести заведомо неправильные учетные данные?

Следует заметить, что в случае ввода неправильных учетных данных Вы вряд ли сможете:

  • отстоять свое право на домен при возникновении спора
  • передать (продать) домен другому лицу
  • восстановить логин/пароль для эккаунта в случае утери этих данных

Secure Shell

Secure Shell (SSH) is a cryptographic network protocol for secure data communication, remote shell services or command execution and other secure network services between two networked computers that connects, via a secure channel over an insecure network, a server and a client (running SSH server and SSH client programs, respectively). The protocol specification distinguishes two major versions that are referred to as SSH-1 and SSH-2.

The best-known application of the protocol is for access to shell accounts on Unix-like operating systems (it can be used in a similar fashion for accounts on Windows, though it is not a very popular option due to Remote Desktop Services. It was designed as a replacement for Telnet and other insecure remote shell protocols such as the Berkeley rsh and rexec protocols, which send information, notably passwords, in plaintext, rendering them susceptible to interception and disclosure using packet analysis. The encryption used by SSH is intended to provide confidentiality and integrity of data over an unsecured network, such as the Internet.

Frequently Asked Questions about domains

Frequently Asked Questions about domains

How do I find your NS servers?
Our NS servers are
ns1.adelinahost.com
ns2.adelinahost.com

What is a domain?
Strictly speaking, it is a name (See domain name below). But in common usage we are often referring to the most basic part of a group of domain names (e.g. baremetal.com being the domain behind the names www.adelinahost.com and ftp.adelinahost.com and http://adelinahost.com/ ). In this sense it is more like an address (123 some street) for an infinitely expandable house (so you can just keep adding suite numbers :-).

What is a domain name or a fully qualified domain name??
It is a convenient name (or label) for some information that would be awkward to refer to directly. Usually that information is an IP address (which is 4 numbers between 0 and 255, e.g. 192.168.10.250).

What is a domain registration?
A domain registration is a ‘right to use’ for a given domain. Usually registrations cost money, and are sold by the year.

What is a domain registrant?
A registRANT is the organization that has purchased a domain registration.

What is a domain registrar?
A registRAR is an organization that sells domain registrations. Usually registrars have a contract with a registry, and often are certified by an organization. Some Registrars use resellers (like OpenSRS), so it may be hard to know who the registrar is. Some registrys sell direct, so the registrar and the registry may be the same organization.

What is a domain registry?
A registRY is the single organization that co-ordinates the domain registrations for a given top level domain (e.g. .com, .ca, or .info).

How is a domain registered?
Generally, the organization that wants to register a domain ( which might be an individual), contacts a registrar or visits a registrar’s website, requests a particular domain name, provides some contact information, provides some other information (which may include a chosen password, and/or DNS servers, and usually payment information like a credit card number).
The Registrar then sends the appropriate information/request to the registry to complete the registration.

What is a WHOIS record?
For most domains, much of the contact information provided during the registration process is put into a public whois record.
(The .com domains are one extreme, with full info for the registrant, plus admin, technical, and billing contacts. At the other extreme is .co.uk which provides registrant name, the name of the registrar and the DNS servers.)

What are the domain contacts?
They are the people you contact if you have questions about the domain or trouble accessing it.
Just as importantly, the admin contact is the authority allowed to make changes to the domain, and the billing contact (if there is one) is where the domain expiration messages go to.

What are DNS servers?
DNS servers are what actually makes a domain name work. By work I mean that they convert a text label to the information like IP addresses that the Internet is based on. (See ‘What is a domain name’.)
This is not to say that they handle e-mail, or serve web pages. Instead they direct web surfers and e-mail messages to the correct computers.

Can I make my domains work myself without hiring a hosting service?
If you are comfortable adding and configuring new software, and you have a computer connected full time to the internet, then the answer is probably “yes!” Of course, there are many good reasons to use a competent professional hosting service, but for casual or experimental use, a home computer can do fine. (Also, there are various free services on the net. You may be able to combine free dns with free webspace.)
DNS servers generally require static IP addresses, so they are not usually run from ADSL and cable modem connections… but there are a number of free and non-free DNS services (see the Google Directory or our domain-dns.com service).
There are many solutions for web server software, so I’ll just provide a link to the Google directory. (Note that there are subdirectories for Windows, Macintosh, and Unix software.)