Ce este un DNS?
Un DNS (Domain Name System) reprezinta un sistem prin care se translateaza un nume de domeniu si nu numai (ex: www.sasnet.eu) intr-o adresa IP (ex: 123.456.789.10). Necesitatea operatiei de translatie este datorata faptului ca Internetul functioneaza pe baza de adrese IP, domeniile fiind folosite la memorarea mai usoara a adreselor de Internet de catre utilizatori.
Cu alte cuvinte, un DNS este un server care converteste un URL intr-o adresa IP si invers. Exemplu: Aveti un server de cs,aveti ip-ul 123.456.789.10 ca sa nu mai trebuiasca sa il tineti minte, va puteti conecta si la DNS adica CS.SASNET.EU !
Cei care au probleme in recunoasterea DNS-ului sunt din 2 motive:
1) Windowsul nu are setarile necesare sau intre timp s-au pierdut
2) Providerul dumnevoastra de internet(firma) are blocat DNS-ul pe anumite site-uri(caz rar)
Rezolvare:
Example: Changing DNS server settings on Microsoft Windows 7
- Go the Control Panel.
- Click Network and Internet, then Network and Sharing Center, and click Change adapter settings.
- Select the connection for which you want to configure Google Public DNS. For example:
If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
- To change the settings for an Ethernet connection, right-clickLocal Area Connection, and click Properties.
- To change the settings for a wireless connection, right-clickWireless Network Connection, and click Properties.
- Select the Networking tab. Under This connection uses the following items, click Internet Protocol Version 4 (TCP/IPv4), and then click Properties.
- Click Advanced and select the DNS tab. If there are any DNS server IP addresses listed there, write them down for future reference, and remove them from this window.
- Click OK.
- Select Use the following DNS server addresses. If there are any IP addresses listed in the Preferred DNS server or Alternate DNS server, write them down for future reference.
- Replace those addresses with the IP addresses of the Google DNS servers: 8.8.8.8 and 8.8.4.4.
- Restart the connection you selected in step 3.
- Test that your setup is working correctly; see Testing your new settings below.
- Repeat the procedure for additional network connections you want to change.
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