Category 5 Category 5 transmits at 100MHz frequencies, providing a rated line speed of up to 100Mbit/s and a max cable segment length of 100 meters. Most Category 5 cables, designed for early networks, only used two twisted pairs. Older Category 5 cables continue to make up the bulk of the world’s network infrastructure. Category [...]

In a Guest OS with NAT network, out going traffic will show the host IP address. we use this mainly for access something form the guest OS. But some times we want to access the guest OS from the network. Normal case this is not possible and will reach only up to the Host server. [...]

GlassFish is an application/web server for deploying Java based web application. To obtain best performance in production environment, some modification has to be made to the default GlassFish installation. Tip 1:  Java Version Typically, many performance optimizations are always being incorporated in newer releases of Java SE.  Whenever possible, it is a good idea to [...]

To setup SSL in different java based web servers like Apache, Tomcat, Glassfish, we generally use the keytool command line to create certificate, generate CSR etc…,  which is a bit complicated and confusing if you are not well versed with the keytool command line, We can make our life much more easier, by using Keytool [...]

Here is the step by step Installation procedure of a Syslog Server.  Here I Used Debian platform.  If you are in a different platform please check your file names and path.

PuTTY Connection Manager is a free PuTTY Client Add-on. It can store sensitive information’s like IP address username and passwords of our Servers and Network switches. We can save even commands and scripts in the Connection manager database. Once a connection create and save in the database anyone can access that server without user id [...]

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

PuTTY is a client program for the SSH, Telnet and Rlogin network protocols. its help to access remote servers like Linux unix using SSH. and telnet feture will help you to access routers and other ssh/telnet clients. Putty allso support SSH2. it is a better replacement for windows hyper terminal. Putty is must tool for [...]