Run my testbed experiment

Run my testbed experiment

Exploring the 5G RAN

In this experiment, you will explore the 5G RAN by bringing up an end-to-end 5G network on a single server. You will see: * how a 5G RAN can be split with the CU (centralized unit) handling SDAP, PDCP, and RRC layers, and the DU (distributed unit) handling RLC, MAC, PHY

Exploring the 5G core network

In this experiment, you will explore the 5G core network by bringing up an end-to-end 5G network on a single server. You will see: * how 5G core network functions can be deployed in containers * the HTTP2/TCP interfaces between network functions * the NGAP/SCTP interface between the 5G gNodeB and

Network layer security

Network security

Network layer security

The exercises in this experiment will focus on security services offered at the network layer of the TCP/IP protocol stack. You will configure a network with a VPN tunnel, and then you will examine the extent to which you are protected from unauthorized eavesdroppers on network traffic, when you

Computer networks

Address resolution protocol (ARP)

In this experiment, we will examine how ARP is used in IPv4 networks - * to resolve IPv4 addresses of neighbors into link layer MAC addresses * and to keep track of the neighbor reachability. It should take about 60 minutes to run this experiment. You can run this experiment on CloudLab,

Computer networks

Inspecting network traffic with tcpdump and Wireshark

In this experiment you will practice using tcpdump and Wireshark, two software applications for packet capture and packet analysis. Using these applications, we can capture raw network data as it arrives at or leaves any host in our experiments, save the raw network packets in a file, and analyze the

Network security

Secure networked applications

The exercises in this experiment will focus on the confidentiality of network services - to what extent is your data protected from unauthorized eavesdroppers on network traffic, when you use services that offer remote login, file transfer, or web access? You can run this experiment on Cloudlab, FABRIC, or Chameleon!

Computer networks

Static routing within and between IPv4 networks

In these exercises, you will observe how routing principles apply when packets are forwarded by a router from one network segment to the next. It should take about 60-120 minutes to run this experiment. You can run this experiment on FABRIC, CloudLab, or Chameleon. Refer to the testbed-specific prerequisites listed

Computer networks

TCP congestion control

This experiment shows the basic behavior of TCP congestion control. You'll see the classic "sawtooth" pattern in a TCP flow's congestion window, and you'll see how a TCP flow responds to congestion indicators. It should take about 1 hour to run this

Computer networks

Basic home gateway services: DHCP, DNS, NAT

Most Internet-connected homes use a home network gateway to connect a local area network (LAN) in the home, to a wide area network (WAN) such as the Internet. In this experiment, we will look at some of the services that are always or often included on these gateways: * routing between

Computer networks

Operation of a basic Ethernet switch or bridge

In this experimental demonstration of the basic operation of a layer 2 switch/bridge, we will see: * how to set up a layer 2 bridge on Linux, * how a bridge or switch learns MAC addresses and updates its forwarding table, and how it forwards, filters, or floods a frame depending

Nyquist formula: relating data rate and bandwidth

Wireless communication

Nyquist formula: relating data rate and bandwidth

This experiment looks at the relationship between data transmission rate, bandwidth, and modulation scheme, as described by the Nyquist formula. It should take about 60-120 minutes to run this experiment, but you will need to have reserved that time in advance. This experiment uses wireless resources (either the sb3 or

Redirect traffic to a wrong or fake site with DNS spoofing on a LAN

Network security

Redirect traffic to a wrong or fake site with DNS spoofing on a LAN

This is an experimental demonstration of two ways a malicious attacker might redirect traffic for a website to its own "fake" version of the site. Both methods involve DNS spoofing. In one version, the attacker will masquerade as the legitimate DHCP server for the LAN and instruct clients