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Hi Robert; Thanks for the suggestion but I looked and the duration is already set to one hour. I'm even more puzzled now that I see that! Can there be some type of "bot" that is grabbing the leases automatically? I don't get it! Mary E. Rogers Associate Director Trumbull Library System 33 Quality St. Trumbull, CT 06611 203-452-5116 (voice) 203-452-5125 (fax) [log in to unmask] -----Original Message----- From: [log in to unmask] [mailto:[log in to unmask]] Sent: Monday, February 08, 2010 1:59 PM To: [log in to unmask] Subject: FW: [LIBNT-L] Question re: wireless I tried posting to the list, but my e-mail that I signed up with must be different than what the campus uses now. If this works, can you post it back to the list? ________________________________ From: Robert Bowen Sent: Mon 2/8/2010 1:53 PM To: Library NT; [log in to unmask] Subject: RE: [LIBNT-L] Question re: wireless Mary, If you look at page 131 here - http://books.google.com/books?id=NwHd-13IO-MC&pg=PA125&lpg=PA125&dq=dhcp+lea s e+duration+windows&source=bl&ots=thUNxtpPA1&sig=X40xU7wc0r-52mkz5cm4RCxD e+duration+Zg4&h l=en&ei=D11wS4HzI5SXtgfNyaWABg&sa=X&oi=book_result&ct=result&resnum=5&ved=0C B cQ6AEwBA#v=onepage&q=dhcp%20lease%20duration%20windows&f=false it shows you the DHCP interface. Just right click on the Scope and select properties. Towards the bottom you'll see lease duration. You'll need to stop and restart the DHCP service for the setting to take effect. This may not do what you are looking for. See the note on page 125 where it states that the server keeps the lease as allocated. What brand are your access points? You may be able to limit client connections that way. Robert ________________________________ From: Library NT on behalf of Mary Rogers Sent: Mon 2/8/2010 10:49 AM To: [log in to unmask] Subject: [LIBNT-L] Question re: wireless We have wireless at our library and about a year ago, I had the network "guru" over at our town hall set it up via DHCP. We only have 12 "slots" on our network for those folks wanting to use wireless. We don't authenticate and it has worked well for the most part. Once in a while I would have to release a lease because all of the slots were used up. Well -- about 3 weeks ago, all of the sudden the leases are all in use constantly! When I go into the DHCP settings it almost looks like something is automatically taking up all the slots and I don't know how to stop that from happening. Our server that this is set up on is a Windows 2000 server if that helps. Also -- we use Access Points throughout the building rather than wireless routers. Is there a way to have the leases automatically expire after an hour? That is how much time we allow patrons to use the computers in our Technology Center. Any help on this would be much appreciated! Mary E. Rogers Associate Director Trumbull Library System 33 Quality St. Trumbull, CT 06611 203-452-5116 (voice) 203-452-5125 (fax) [log in to unmask]