Internet access for participants

During the FLoC period period, both HCØ and the Computer Science department (DIKU) will provide internet facilities during work hours for the participants, free of charge.

HCØ's wireless network

You can access two different wireless-network boxes at HCØ. One is situated in the registration area outside auditorium 1, the other is functioning in the E building above auditoriums 5 and 6.

The wireless network will assign IP numbers dynamically. IP numbers are translated back and forth through transit, so if you are planning on using Virtual Private Networks (VPN), you should make sure that your client accepts mangled IPs.

DIKU's network

As a participant, you need an account on DIKUs system to use the internet facilities. You obtain an account by giving name "floc02" and password "floc02" at any publicly accessible terminal, after which you are asked to identify yourself by giving your registration number and your email address, as stated on your registration receipt.

Having obtained an account (a login and a password), you can log onto any terminal or plug your portable computer into any of the publicly accessible wall outlets.

Terminals

DIKU has five terminal rooms publicly accessible.
Terminal rooms at DIKU
Room Terminals Comment
NumberType
S110 70+Sun
M103-M111 50+Sun
N237 22 Sun next to smoking area
S125 19 Sun key required
S103 14 NT key required

When you log onto a terminal, you will be inside a firewall. To make a connection to a host outside the firewall, you will need to log onto one of the hosts that are connected to the outside world.

Portables

There are several areas at DIKU where you can plug your portable computer into a DHCP-operated connection.
DHCP connections at DIKU
Room Connections Comment
M203 16
N116 12
N216 4
N233 8 smoking area
You can plug into any wall outlet marked by a green dot. You can make connections to the outside world only through an ssh tunnel or the http/ftp proxy server proxy.diku.dk using port 8080.

How to read your email

Your options, in order of increasing difficulty, are
  1. Use telnet or ssh to log into your regular shell account at home, and read email using your favorite tool there. Ssh will forward X11 connections for you, so you can also use X-based mail clients.
  2. Bring a portable with a POP client and suitable network interface and create an SSH tunnel to your regular POP server, as described below.
  3. Use a web-based secondary email account.
  4. Configure one of the standard mail clients at DIKU to work as a POP client, and run it on one of the host with connections to the outside world. The primary mail clients on DIKU's system are mutt and pine, both of which ought to be configurable to function as POP clients.

Setting up an SSH tunnel for getting POP email to a portable

If you have openssh or a similar command-line SSH client on your portable, run

ssh -N -L 22222:mypop.myuniversity.edu:110 \
          mydiku@tyr.diku.dk
in parallel with your mail client, and configure the mail client to use localhost port 110 as the POP server.

If you that doesn't work (i.e. your SSH client has no command-line interface or a different interface that the author of this walkthrough had in mind), instead log into ask.diku.dk or tyr.diku.dk and run

ssh -N -g -L 22222:mypop.myuniversity.edu:110 localhost
there while your mail client runs on the portable. Configure the mail client to use ask.diku.dk/tyr.diku.dk port 22222 as the POP server. Ssh may tell you that port 22222 is already in use; in that case select a different port at random and try again.

Hosts connected to the outside

Host, IPOSSSH 1 fingerprint
ask.diku.dk 130.225.96.225 Red Hat GNU/Linux 7.2a0:13:26:41:f0:c6:7e:f3: c1:61:ff:7c:9e:e3:13:6d
tyr.diku.dk 130.225.96.226 Red Hat GNU/Linux 7.2a8:b0:57:13:6f:f5:31:e9: 29:04:a5:d0:70:30:85:ea