Viewing OSI layers on Wireshark

Wireshark is a great tool to see the OSI layers in action. I use a VM to start my Window 7 OS, and test out Wireshark, since I have a mac. I start Wireshark, then go to my browser and navigate to the google site.

Lesson 11: Securing TCP/IP

Network+ Objectives:
+ clasisfy apps, devices, and protocols related to the OSI layers for encryption devices
+ common networking protocols: HTTPS, NTP, SNMP 2/3. SSH
+ given a scenario, use appropriate networking monitoring resource to analyze traffic SNMP, SNMPv2, SNMPv3
+…

Lesson 3: Topology and Cables

I. Topology

Topology — ways of connecting computers together

I. Bus + Ring

First generation networks use buses and rings.Buses need terminators to prevent a signal reflections from one…

Lesson1: “Please Do Not Take Sales Person’s Advice”

Today I learn about the OSI and TCP/IP stack, the foundation of networking. The Open Systems Interconnection (OSI) is a conceptual model to explain how two networks talks to each other, and the Transmission Control Protocol/Internet…

Lesson 7: TCP/IP Basics

I. Standardizing Networking Technology

• diff companies have diff protocols
• novel netware uses IPX/SPX
• microsoft uses NetBIOS/NETBEUI
• apple uses AppleTalk

Lesson 2: Components

This lesson takes a look at how the devices and protocols fit into each of the OSI layer.

Lesson 4: The Ethernet

ethernet — the standard for a family of network technology with the same bus topology, frame type, and network access method.

In the early days of networking, Xeror partner up with Digital Equipment Corporation (DEC) and Intel to publish the Digital-IntelX–Xenox…

Lesson 5: Modern Ethernet

100BaseTx (100 BaseT)

speed: 100 Mbps

signal type: Baseband

distance: 100 meters

node: upto 1024 per hub

topology: star-bus

cable: CAT5e or better UTP or STP RJ-45 connectors

Committed to competency!

I’ve been interested in networking for a while and I want to be more serious. Sure reading a few books of networking and pentesting is great, but the best advice people in IT can give me is to get certified. I find it hard to commit to something unless there is a clear goal. I need…

Midway Review of the Network+ Test

I’ve made it through the half way mark (on chapter 11 out of 20, although chapter 1 is just…