MIME-Version: 1.0 Content-Location: file:///C:/C913CB14/Wireless-Meeting-Handout.htm Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="us-ascii" Network connections


Wireless Netw= orking @ SLAC

(a quick guide to avoid problems)=


Wireless networking (802.11b) is supported in many locations at SLAC for staff, visitors, collaborators, and conference attendees. You will be on the SLAC “visitor” network which is outside the SLAC network firewall.


Warning: Hosts on the visitor network that are seen as 'scanning hosts', including those that might be running SKYPE as a supernode (or some other P2P software)  will be put in the 'penalty box'.  A scanning host is a host seen ope= ning many tcp sessions in a very short time.&nb= sp; Being in the penalty box reduces that machines network connection outside the visitor network to a shared 56kbps connection with other machines that are i= n the penalty box, thus drastically reducing their network speed and throughput.


See more information on the visitor network penal= ty box and how to determine if you are in the penalty box at:

ht= tp://www2.slac.stanford.edu/comp/net/wireless/visitor_net.htm


Laptop owners are strongly encouraged to check their laptop and wireless configuration to ensure they adhere to recommended settings.  Laptops that are not configured correctly can, and have, shutdown wireless networki= ng in the auditorium and other locations at SLAC.


Recommended sett= ings and information:

·         Wireless adapter card:&n= bsp;  802.11b or 802.11g

·         Network configuration:    DHCP

·         SSID:   &= nbsp;           &nbs= p;            Set to ‘visitor’ or to= allow any value

·         Network Type:  &nbs= p;            Set to ‘infrastructure’= ;

·         Open access:  =             &nb= sp; No WEP, no data encryption, no authentication


Some problem areas:


Wireless by nature make= s it very hard, time consuming, and sometimes impossible to locate a problem laptop. Until the problem laptop is found and fixed, or it leaves the affected area, network connectivity may be lost to everyone. 


For help: