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Nslookup.exe (abbreviation for name server lookup) is a command line utility used for testing and troubleshooting DNS servers. It is built into Unix (including Linux and variants) and Windows. The main purpose of the utility is to query DNS servers to find DNS details, MX records for a domain, NS servers of a domain In Windows, Nslookup.exe Continue reading Nslookup command overview
An IP Directed broadcast gives the sender the capability to send a packet and broadcast it to the entire network. An example of a network broadcast address for the classful network ID 140.101.0.0/16 is 140.101.255.255. When Cisco introduced this command in IOS version 10.0, they did not realize the ramifications of enabling directed broadcasts which enabled Continue reading Preventing Smurf attacks by stopping IP directed broadcasts
We might sometimes need to manually configure the routes in the routing table. To get a better understanding of the capabilities of the ROUTE command, its best to get started with the documentation. Hence, running a route command without any parameters gives us the syntax and documentation of this command as can be seen from the Continue reading Manipulating network routing tables with the ROUTE command
Hexadecimal equivalent codes of ASCII characters can be used to represent characters of a URL’s path and filename. Each hex number is preceded by a “%” symbol to identify the following two numbers/letters as a hexadecimal representation of the character An ASCII chart can be used for the conversion from ASCII to Hex or vice versa One good source Continue reading Securing your URL with Hexadecimal codes |
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