Documentation is always tedious task for system administrators, especially there are 50’s and 100’s of servers. Recently I planned to document all my servers. After a long search I reached SYSID site, it is an open source, nice VB Script and python script for creating  decent looking documents,   It is very nice to document windows [...]

OpenDNS is one of the public DNS Servers. Open DNS provides many useful features like security caching and web filtering. Comparing to other Public DNS services, security is the main feature of open DNS. Here we listed some security features of Open DNS

IP ( Internet Protocol ) Address conflict occurs when two different devices in local network are using the same IP address, It can happen due to the mistakes from engineers or rogue DHCP server. However once the IP conflict happened in a critical devices we want to find out the device in few minutes. In [...]

TTL is a timer value included in packets sent over TCP/IP-based networks that tells the recipients how long to hold or use the packet or any of its included data before expiring and discarding the packet or data.
Folloing are the list of Devices / Operating system with Default TTL values