Tutorial Category

DNS

  1. How To Flush Linux / UNIX DNS Cache

    I'm on a Dial UP Internet connection under Linux and frequent dial up disconnection causing dns problems. How do I flush DNS cache under UNIX / Linux distribution using a shell prompt? Under MS-Windows you can use the ipconfig command to flush dns cache. However, Linux and UNIX provides various ways to flush cache. Linux can run nscd or BIND or dnsmasq as the name service caching daemon. Large and work-group servers may use BIND or dnsmasq as a dedicated caching server to...
  2. How To Test DNS Resolution With NSlookup

    What is NSlookup? NSlookup is a utility that allows users to verify that a given domain name (or domain record) is resolving properly locally on their PC. It is also useful to check DNS caching, to ensure that after a DNS changeover that the PC is seeing the new IP address entry. Using NSlookup To access nslookup on a Windows workstation, perform one of the following: Windows 7 or Vista: From the Start menu, in the search field, type cmd, and then press Enter. ...