The SLAC Visitor Network
Last updated: June 20, 2009
The visitor network is a SLAC owned network (a subnet of SLAC owned IP addresses) which is outside the SLAC network firewall. Users connected to it are treated as if they were on any commercial or public ISP and will be assigned, via DHCP, a 198.129.n.n IP address. Because you are outside the firewall you should consider your connection very insecure. It is the responsibility of users of the Visitor network to protect their communications, e.g. by using a Virtual Private Network (VPN).
The visitor network is meant for light casual use and to provide an easy network connection for SLAC visitors, collaborators, conference/meeting attendees, vendor demonstration etc. Do not place mission critical applications on the Visitor network.
About the visitor network
Connect by using 10baseT Ethernet or with a wireless laptop connection. All wireless networking at SLAC (see http://www2.slac.stanford.edu/comp/net/wireless/default.html) is on the visitor network.
The visitor network is available in selected SLAC conference and meeting rooms and in areas supporting wireless networking.
Set your laptop network configuration for DHCP. There are no static or assigned IP addresses available. A DHCP server will provide your laptop with the necessary network information e.g. IP address, gateway address, and DNS addresses.
To connect to the visitor network for the first time you will need to
open a web browser and attempt to connect to any normal internet web site
(we suggest http://www.slac.stanford.edu). If your browser was already
running, you may have to hit the "refresh" button.
You will be redirected to a portal web page that provides basic information about the SLAC Visitor Network and asks you to provide some information about yourself. The purpose of asking you for this information is so that SCCS can locate you in the event that your computer has a virus or causes problems with the network. Re-registration is required if a device is not seen on the network for more than 2 weeks.
Before you can proceed to the internet, you will need to agree to the SLAC Acceptable Use Agreement regarding network use. After you agree, your system will be given regular internet access. Be aware that this includes not running applications that open many connections such as a SKYPE supernode. If your host on the visitor network is detected as generating a lot of connections it will be put in a penalty box that limits all users in the penalty box to a maximum aggregate of 56kbps.
To print from the Visitor's subnet see "Printing using LPR in Windows"
Support for the visitor network is on a best effort basis. If a problem is reported we will try to address the issue in a timely fashion. Priority for addressing problems will naturally go to networks which are more critical to the SLAC mission:
Owner: Les Cottrell. URL: http://www2.slac.stanford.edu/comp/net/wireless/visitor_net.htm