Telnet lets you manage Cisco switches and routers remotely however it is not very secure. This article explains how to disable Telnet on Cisco devices
This is a cheat sheet for basic Cisco IOS Router commands.
How to configure SSH on Cisco Router and Switches. Enabling SSH allow you to securely manage Cisco devices remotely.
This is a cheat sheet for basic Cisco IOS Switch commands.
Configuring port security on Cisco IOS switch by setting violation mode, max MAC addresses, aging and static MAC addresses
how to view IP routing table and add or remove static IP routes in Windows.
This article tells you how to configure a Cisco Router as DHCP server. Explains the IOS commands for configuring the router as DHCP server