OpenDNS’s SmartCache is basically a DNS optimization feature which allows Open DNS nameservers to return the last known good IP address for a domain whose authoritative nameservers are currently not responding.
In order to get a bigger picture of why OpenDNS needs to contact the authoritative nameservers, you must read my earlier article titled What is [...]
OpenDNS, the DNS service i wrote about earlier in my post Open DNS: A big DNS Cache can also be used for blocking various websites. If you have been using your firewall to do all the blocking work, this article will guide you, how you can block specific domains using OpenDNS.
In order to get started [...]
This post is primarily an attempt to bring out 5 posts from the Archives. The posts listed here have been popular with the readers since the time they got published. Hope you will enjoy reading/ glancing through them again.
Microsoft Windows: More fun with the HOSTS file : In this post, i have tried to describe [...]
To begin with, i thought of writing a little about DNS and then moving on. So here I am, beginning with a very basic question ” What is DNS ? “.
Ok, having written that, i also need to write the explanation for this question. . So here you go;
DNS stands for Domain Name [...]
Its a known fact that the emails we receive/ send are scanned before they reach us/intended recipient.
I thought of putting below a diagram describing how the entire stuff happens.
Lets first discuss how the entire flow for Virus Scanning works in case of Incoming Mails.
All the incoming mails ( infected/clean) irrespective of there status are sent [...]
