WLAN at P2P 2004
Participants of the conference will have the
possibility to use the ETH-wide WLAN infrastructure.
What you need:
The process of getting acces works like this:
- WLAN enabled device.
- DHCP client
- Password and Username from the Registration Desk
- SSH client
- Connect a WLAN base-station. Network: "Public", no encryption.
- Request an IP address and network configuration
data via DHCP.
- Do an SSH-login to valid.ethz.ch with the password and
username you have been given.
- That's it.
Remark and Warnings
- You get a NAT-ed IP address via DHCP, but there is no firewall!
- Your computer needs to be patched with the current security-fixes!
- WLAN encryption is off, people can listen to your connections.
Use SSH or VPN for remote logins.
- WLAN is not a high-performance networking solution. Please
do not transfer large amounts of data.
- There is no need to configure a proxy for web-browsing.
- DNS and network information will be provided by the DHCP server.
- ETH will not provide mail-servers. Mail can be sent directly
or via your own mail-server.
- To use SSH with an username different from your own, you can use
either ssh email@example.com or
ssh -l username valid.ethz.ch as commandline syntax.
Notes on specific Systems
Depending on the type of card (mini-PCI, PCMCIA, ...) and
software set-up, you need to only plug-in/activate the card
to get the WLAN connectivity itself or you may need to do some
manual set-up. Again depending on your set-up, you might get a dhcp-address
automatically or not. To get a DHCP-address manually, calling
"dhclient " is usually enough.
Now connect to valid.ethz.ch with
the username and password given to you. After the
server has accepted your login you have full Internet access.
Enable the WLAN card (usually enabling the wireless card is enough)
and set it to get IP address and other information "automatically".
Then do the SSH-login to valid.ethz.ch.
A free SSH client for Windows is
Enabling the WLAN card should be enough in most cases to get
the basic connection.
Mac OS X comes with a command-line OpenSSH version. Use the same
syntax as for Linux.
For Mac OS 9 and before,
"nifty telnet ssh"
is a free solution available from numerous places.
Other Operating Systems
As long as your device can communicate with the base-stations,
can use DHCP and can initiate an SSH connection with
password-based authentication, you can use the ETH WLAN.
For questions contact Arno Wagner