Just wondered, if you can block by IP, has any testing been done to see if you can block by FQDN?
On Mon, Jan 10, 2011 at 10:52 AM, Jonathan Link <[email protected]>wrote: > What's your lease duration? I entered the reservations on Friday > afternoon[1]. On Monday morning, students came in, and noticed nothing. > Lease duration is probably more important for your environment, because > your period of inactivity may be little or none. Reducing the lease > duration to a small enough window to make the change transparent will be > very useful. > > I had previously recorded the MAC addresses, deleted the existing leases I > needed to move and then created the reservations. Took about 40 minutes for > the 200 lab computers to do the entry. > > Going along the lines of what Brian says, you can possibly implement this, > but you need a window of downtime which may not be acceptable. This may > need to be delayed for a future project... > On Mon, Jan 10, 2011 at 10:41 AM, Vicky Spelshaus < > [email protected]> wrote: > >> More information: >> >> It would be approximately 150 machines. I'm one of only 2 people >> supporting about 150 faculty/staff and over 1000 students, appromimately 450 >> machines, the network infrastructure, phone system, security cameras, >> copiers, help desk, training,distance ed class schedule (proctoring and >> remote instructor support) - basically everything using >> electricity. Needless to say we are stretched VERY thin. >> >> This campus is one of 13 supported by a central office. They 'assigned' >> our IP structure. xxx.xxx.200.xxx is 'reserved' for static IPs and 201-203 >> is set for distribution. I don't have enough addresses in the 200 range to >> use. If I reserved - in order as she wants - within the distribution >> ranges, what would happen if I tried to assign an IP that was already in >> use? Would DHCP release that IP automatically or would I need to go aroung >> rebooting machines? >> >> Again sorry if I'm asking dumb questions. It's been awhile since I even >> looked at DHCP. >> >> >> >> On Mon, Jan 10, 2011 at 8:48 AM, Raper, Jonathan - Eagle < >> [email protected]> wrote: >> >>> “I could reserve them, but they won't be in a nice sequential order >>> like she wants.” >>> >>> >>> >>> Why not? Couldn’t you reserve the range for her classroom and assign IP >>> Addresses to individual MAC addresses in whatever order she wants? (I’m >>> assuming you mean that she essentially wants IP addresses assigned in some >>> kind of order that is in relation to the way the room is physically laid >>> out?) >>> >>> >>> >>> …Aside from the fact that in doing so you would be setting a precedent. >>> This may or may not be a good thing for your sanity, depending on how big of >>> a campus you are supporting. >>> >>> >>> >>> Jonathan L. Raper, A+, MCSA, MCSE >>> Technology Coordinator >>> Eagle Physicians & Associates, PA* >>> *[email protected]* >>> *www.eaglemds.com >>> ------------------------------ >>> >>> *From:* Vicky Spelshaus [mailto:[email protected]] >>> *Sent:* Monday, January 10, 2011 9:41 AM >>> *To:* NT System Admin Issues >>> *Subject:* IP range for labs >>> >>> >>> >>> Please forgive me if I'm asking a stupid question... not enough coffee >>> yet. >>> >>> >>> >>> I have a situation where one of the professors wants to keep students >>> from cheating by restricting access to online quizes using the IP addresses >>> of the classroom workstations. She can do this with the software. >>> >>> >>> >>> Here is my problem - not surprisingly I'm using a DHCP server. I refuse >>> to give over half the campus static IP addresses. I could reserve them, but >>> they won't be in a nice seqential order like she wants. Is there another >>> option I am missing? >>> >>> >>> >>> >>> >>> -- Organization and good planning are just crutches for people that can't >>> handle stress and caffeine. - unknown >>> >>> ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ >>> >>> ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ >>> >>> --- >>> To manage subscriptions click here: >>> http://lyris.sunbelt-software.com/read/my_forums/ >>> or send an email to [email protected] >>> with the body: unsubscribe ntsysadmin >>> >>> >>> ------------------------------ >>> Any medical information contained in this electronic message is >>> CONFIDENTIAL and privileged. It is unlawful for unauthorized persons to >>> view, copy, disclose, or disseminate CONFIDENTIAL information. This >>> electronic message may contain information that is confidential and/or >>> legally privileged. It is intended only for the use of the individual(s) >>> and/or entity named as recipients in the message. 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Do not deliver, distribute or copy this >>> message, and do not disclose its contents or take any action in reliance on >>> the information that it contains. >>> >>> ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ >>> >>> ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ >>> >>> --- >>> To manage subscriptions click here: >>> http://lyris.sunbelt-software.com/read/my_forums/ >>> or send an email to [email protected] >>> with the body: unsubscribe ntsysadmin >>> >>> >> >> >> -- >> Organization and good planning are just crutches for people that can't >> handle stress and caffeine. - unknown >> >> ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ >> ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ >> >> --- >> To manage subscriptions click here: >> http://lyris.sunbelt-software.com/read/my_forums/ >> or send an email to [email protected] >> with the body: unsubscribe ntsysadmin >> > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected] with the body: unsubscribe ntsysadmin
