NASA Lab 2

@piepie01

Outline

• tcpdump
• iperf
• Exercise 1 - Facebook again!?
• Import VM
• ssh tunnel
• Exercise 2 -iperf

Tcpdump

Tcpdump

• Dump the traffic on a network
• Wireshark : GUI, Tcpdump : CLI

Example

Iperf

Measure the bandwidth

Iperf

• iPerf is a tool for active measurements of the maximum achievable bandwidth on IP networks.

Exercise 1

Facebook again!?

Steps

1. Get your partner. (Group in pair, A & B)
2. Import the VM.
3. Connect to your partner through SSH.(Testing)
4. Make an SSH tunnel.(A -> B)
5. Set the Network proxy in A.
6. Start tcpdump(B).
7. Login fakebook(A).

Goal

• Show the account&password in B to TA

Infrastructure

Import VM

Ubuntu 12.04.5

Why VM?

• Tcpdump needs privileged mode.
• Install packages easily.

How?

1. Download VM
2. Open VMware
3. Import VM
4. Turn the Network connection to BRIDGE
5. Generate a new MAC-address
6. Boot it

Account:nasa2019

password:nasa

SSH tunnel

Command

Network proxy

• Keyword : SOCKS Proxy

Infrastructure

Exercise 2

iperf

Install

VM A - server

VM B - client

Goal

• Show the results to TA