Networking

Here is a list of default passwords of several hardware and software that we may use.
Vendor : 3COM
Model : CoreBuilder
Version : 7000/6000/3500/2500
Connection Type : Connection Type : Telnet
Username : debug
Password : synnet

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VPN software brings the security of a private network to an insecure network, and allows you to access private local networks from anywhere. As we’ve explained in the past, you can do things between computers on your local network you can’t from out on the internet: like listen to a shared iTunes library or access [...]

This is one personal note, where I got confused to block access to sites or download certain files and at certain hours. To do this blocking I use a web proxy in mikrotik OS.
The way that I do:
Create a nat rule for WebProxy
/ip firewall nat add chain=dstnat protocol=tcp dst-port=80 action=redirect to-ports=8080
enable webproxy-nya
ip web-proxy set enabled=yes
masukkan [...]

The Telnet client component provides a method for communicating with a Telnet server. The process for establishing an interactive session with a Telnet server using the Telnet component is as follows:

Creating a new Telnet instance
Implementing a TelnetListener
Registering a TelnetListener
Establishing a connection
Performing option negotiation
Receiving data
Sending data
Releasing a connection

Each of these processes is described in the sections [...]

MTR combines the functionality of the traceroute and ping programs in a single net-work diagnostic tool. MTR is networking tools available on Linux. As mtr starts, it investigates the network connection between the host mtr runs on and a user-specified destination host.
Mtr is fairly easy to use once you have a look at the different [...]

LAN and WAN were the original categories of area networks, while the others have gradually emerged over many years of technology evolution. Note that these network types are a separate concept from network topologies such as bus, ring and star.
LAN – Local Area Network
A LAN connects network devices over a relatively short distance. A networked [...]

There are hundreds of basic and advance level commands of a router. It is not easy to remember all the commands. But some commands are frequently used and can be remembered with some practice.
Routing: Routing is a process of moving the data (packets) through an inter network. Routing performs the two basic tasks. Define the [...]

EtherChannel allows you to achieve greater speed by bundling Fast Ethernet or Gigabit Ethernet links, which makes a switch or router use the merged ports as a single port. This gives you the most bang for your buck from your port cost. EtherChannel uses a Cisco-proprietary hashing algorithm to achieve this link bonding.
EtherChannel can be [...]