..
Category : Networking
Reverse Engineering is the most common form of subnetting. You’ll start with an IP address and Subnet Mask. Is this IP Address Valid? What Subnet Range does it belong to? Is it on the same subnet as the others plugged in? Scenario #1: 192.168.1.127 / 255.255.255.224 /27 = 11100000 = 32 Increment 192.168.1.0 – 192.168.1.31 ..
This article outlines the steps required to break a Class A, B or C network down into multiple Subnets as defined by the number of Hosts required for each subnet. Several examples are provided below, along with practice exercises (actual answers not provided.) Use these examples to work on your speed! Goal: 2 – 3 ..
This article outlines the steps required to break a Class A, B or C Network and break it down into multiple subnets as defined by the required number of subnets. At the bottom of the page, several examples are provided, as well as several test scenarios (actual answers not provided.) The Three Steps of ..
Reviewing the basics of IP IPv4 Addresses: 4 Octet Address, each octet = 1 byte. 32 Total Bits Can be one of 3 classes, A, B or C A: 001 – 126, 16,777,214 Hosts (256^3 – 2) B: 128 – 191, 65,534 Hosts (256^2 – 2) C: 192 – 223, 254 Hosts (256 – 2) ..
Understanding the Dangers of Wireless Networks Wardriving: Driving around an area looking for open networks. Hackers: People looking to steal information or simply perform malicious behavior. Employees: Companies that block Wi-Fi trying to create security, but employees create their own to enable wi-fi functionality. Wireless Security Authentication Require Username and Password May limit to specific ..
Types of Wireless Networks PAN: Personal Area Network – Wireless Mouse, Bluetooth, very short distance LAN: Local Area Network – replace or suppliment your wired LAN MAN: Metropolitan Area Network – Uses Point to Point Wireless Bridges to allow network to extend several miles. WAN: Wide Area Network – Cellular. Wireless LAN Facts Wireless ..
Configuring Speed and Duplex By default both Speed and Duplex are set to “Auto” Auto-detect Speed works every time. Auto-detect Duplex can fail if both the switch and the device are set to auto detect. DUPLEX MISMATCH: duplex mismatch discovered on FastEthernet 0/1 (not half duplex), with AccessServer Ethernet (half duplex). You will only see ..
Setting up Port Security Port security is a way to lock down what devices can plug into your switch, or how many devices can plug in. This prevents users from putting switches on their own lines. It is possible to use a specific MAC address and if a new device is plugged in, it will ..
Configuring Passwords on a Cisco Switch The first time you attempt to Telnet, you will be denied because no passwords have been set. Passwords must be set via the terminal: Sw1>enable Sw1#conf t Sw1(config)#enable password PassWord Test the new password by exiting back to User Mode, then attempt to enter Privilege mode. Sw1(config)#exit Sw1#disable Sw1>enable ..
Recent Comments