1. N ETWORKED & D ISTRIBUTED COMPUTING S YSTEMS L AB Programming Assignments EE323 Computer Networks

2. N ETWORKED & D ISTRIBUTED COMPUTING S YSTEMS L AB Assignment Layout Total 5 assignments (15%) – Web Server – UDP Pinger – SMTP Mail Client – ICMP Ping – Web Proxy What to do – Implement your code (DO NOT COPY!) – Write a simple report that includes your code and result screenshots – Bonus question in every assignment if you’re up for a challenge – Submit your report to KLMS 2

3. N ETWORKED & D ISTRIBUTED COMPUTING S YSTEMS L AB Lab Environment (Linux) Lab machine is administered by TA IP address – 143.248.56.44 Use SSH protocol to communicate with the lab machine – PuTTY (Windows) – Terminal (Mac OS) ID – Your student number Password – ee323 3

4. N ETWORKED & D ISTRIBUTED COMPUTING S YSTEMS L AB Cygwin Provide Linux-like environment in Windows – http://cygwin.com/install.html Install Cygwin – Download & run setup.exe – Choose any URL to download files 4

5. N ETWORKED & D ISTRIBUTED COMPUTING S YSTEMS L AB Accessing from Outside KAIST Require virtual private network (VPN) program – At first run, use Internet Explorer! – kvpn.kaist.ac.kr – – Log in – Press Start – 5

6. N ETWORKED & D ISTRIBUTED COMPUTING S YSTEMS L AB Change Your Password! Connect to the machine with default ID & PASSWORD Type “passwd” – In response to “(current) UNIX password:”, type current password – In response to “New password:”, type new password. – In response to “Retype new password:”, type new password again. Reminder – It is your responsibility to back up your files Keep the code locally Use the lab machine only for testing and debugging 6

7. N ETWORKED & D ISTRIBUTED COMPUTING S YSTEMS L AB VMware Player / VirtualBox Run another OS (Linux, Windows, etc.) on top of main OS – https://my.vmware.com/web/vmware/free#desktop_end_user_computi ng/vmware_player/5_0 Install VMware – Download VMware Player for Windows 32-bit and 64-bit – Run downloaded file 7

8. N ETWORKED & D ISTRIBUTED COMPUTING S YSTEMS L AB VMware Player / VirtualBox Download Linux (Ubuntu) image file – http://www.ubuntu.com/download/desktop Install Linux on VMware – Click on “Create a New Virtual Machine” – Click on “Browse…” button – Add image file downloaded from website – Insert information : username, password, etc. – Press “Play virtual machine” button 8