When you are using WiFi or wired network using home broadband or mobile hotspot, you are assigned a default DNS server. It sometimes may be read more
Dig (Domain information groper) can be used to do DNS lookup on Linux, Mac or windows machine. It will connect a DNS server (default or read more
When you setup your wifi router and you mac is connected to it, you may want to know what is wifi link speed (the bandwidth read more
Netcat (nc) is pretty powerful command line tool on Linux & Mac and can be used to send data on network. It can be quickly read more
When you create Amazon EC2 instance, you are given a RSA private key to access the instance. On Ubuntu Linux the key is for default read more
When we browse a web site, the browser first do a DNS lookup to find the IP address of the domain name. We can override read more
Sometimes we want to access a web site from a different location or ip to see how various things appear on the site. There can read more
One of the main activity a webmaster has to perform is to monitor and fix 404 pages (not found pages) on the web sites. When read more
Unix utility nc (netcat) is a pretty handy utility for many network tasks. One such use is to see what headers are being sent by read more
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