NIM

Hey guys, I have a question. Does any of you know how can I protect my network from unauthorized DHCP address leases. Here's a quick info about the network and situation. 1000< PC's with static IP addresses. 150< Laptops with DHCP addresses (mostly reserved IP's by MAC address) I would like to know is there a way to protect my network by DHCP not aquiring IP's to unathorized laptops/PC's. For instance, current situation is that DHCP provides IP's to anyone that connects to our network, and besides that he/she won't be able to access any of our network or domain resources, I'd like to prevent DHCP server leases for those laptops. I know I can protect this with setting port security on the switch, but I'd like to know if this is possible in any other way? Thx Edit: (Updated post) We have static IP's for PC desktops but have to use DHCP for laptops since we have a lot of people travelling to other locations of our company. For example: Mark is working at location A44300xx of our company and that's where he spends most of his working hours. At that location he gets reserved IP from DHCP (MAC Address). That IP is bounded with MAC address and a name of that laptop. Ex. Name of the laptop: A44300AB where 300 represent location subnet and AB is hex from dec IP (171). MAC would be xxxxx44300AB. So I make a reservation for that laptop by his MAC Address and he'll always get that IP on his "mother" location. When he goes to any other location, for instance A44500xx and connects his laptop to the network, he'll get a non-reserved IP address from local DHCP on that location. These range will be from 180 to 199 (last octet), since he has no reservation there. That's the way we worked so far and it was doin' very good, but we have to enforce our security in various fields including DHCP leases.

Macs Vista Linux 1di0t computer users Just some funny links I've collected recently.

Some true facts of life that everyone should have been taught in Biology class. How did we get this far without this information??? If you yelled for 8 years, 7 months and 6 days you would have produced enough sound energy to heat one cup of coffee. (Hardly seems worth it.) -------------------------------------------------------------------------------- If you farted consistently for 6 years and 9 months, enough gas is produced to create the energy of an atomic bomb. (Now that's more like it!) -------------------------------------------------------------------------------- The human heart creates enough pressure when it pumps out to the body to squirt blood 30 feet. (O.M.G.!) -------------------------------------------------------------------------------- A pig's orgasm lasts 30 minutes. (In my next life, I want to be a pig.) -------------------------------------------------------------------------------- A cockroach will live nine days without its head before it starves to death. (Creepy.) (I'm still not over the pig.) -------------------------------------------------------------------------------- Banging your head against a wall uses 150 calories a hour (Don't try this at home,maybe at work) -------------------------------------------------------------------------------- The male praying mantis cannot copulate while its head is attached to its body. The female initiates sex by ripping the male's head off. ("Honey, I'm home. What the..?!") ---------------------------------------------------------------------------------------------------------------- The flea can jump 350 times its body length. It's like a human jumping the length of a football field. (30 minutes..lucky pig! Can you imagine?) -------------------------------------------------------------------------------- The catfish has over 27,000 taste buds. (What could be so tasty on the bottom of a pond?) -------------------------------------------------------------------------------- Butterflies taste with their feet. (Something I always wanted to know.) -------------------------------------------------------------------------------- The strongest muscle in the body is the tongue. (Hmmmmmm......) -------------------------------------------------------------------------------- Right-handed people live, on average, nine years longer than left-handed people. (If you're ambidextrous, do you split the difference?) -------------------------------------------------------------------------------- Elephants are the only animals that cannot jump. (okay, so that would be a good thing) -------------------------------------------------------------------------------- A cat's urine glows under a black light. (I wonder who was paid to figure that out?) -------------------------------------------------------------------------------- An ostrich's eye is bigger than its brain. ( I know some people like that.) -------------------------------------------------------------------------------- Starfish have no brains (I know some people like that too.) -------------------------------------------------------------------------------- Polar bears are left-handed. (If they switch, they'll live a lot longer) -------------------------------------------------------------------------------- Humans, some primates and dolphins are the only species that have sex for pleasure. (What about that pig??)

Welcome deejay3D, I hope you'll like it here..

May I ask why do you answer same thing in both topics you created in this forum that are almost same???

I have to admit that I was surprised when I saw fixes for a bunch of my problems I experienced on Windows Vista. Hopefully this fixes will be released next week as stated.

Well, IMO that is a crap app. Recently my friend asked me to check his computer since he had some spyware/adware problems. He also had installed Spybot S&D and AdAware Free version. After I've updated both programs and did a full scan when they've found several problems and fixed them, but that PC was far from finished. After that I've removed both applications and installed Spyware Doctor, updated it and run a full scan. It found more than 500 infected files and after the removal everything was working OK. So I'd go with Spyware Doctor as the best shareware solution.

From my experience Spyware Doctor is far the best in detection of unwanted applications like Spyware, Malware and Adware.

Whatever you call it, it looks good! :thumb_yello:

Use your imagination :icon_rolleyes:

Please refrain from using capitals since this means you're yelling at us. And for an Alky, it will be released when it will be released!

Thx, but I don't need any alternatives :icon_rolleyes:

Thx Cyg, but no. I need an application called Dimage View from Minolta :crying_anim02:

Can anyone tell me where can I download this application. I've only found updates for it, but not the full install. :crying_anim02: I need that for a friend who was one of Minolta devices..

The site is back online, and wallpapers can be downloaded now.

I agree, but then again, don't expect ME to stare at the screen and wait for the next live.com hole so I can send you e-mail about it.

Well, it would be easier if you'd check the forums daily :icon_rolleyes:

I've resent validation mail for you. Could you please check your spam folder? Thx

So how old are you then :aggressive:

Tried it and didn't like it :thumbsdown_anim: If they make Unreal Tournament where I'd run through New York streets, that would be something :smiley_superman2:

Is there a mod for that? If yes, please tell me where can I get it? :thumb_yello:

Well, my intention was to prevent users from using animated avatars since they can be distracting while reading through posts. If you really like that av, I won't be rigorous about it, keep it. :icon_rolleyes: Thx for understanding,

Updated again with bug fixes. Any issues you notice, please post in this topic :sweatingbullets:

Please provide more info about this. How did you setup your router and PC. You have probably missed one step somewhere in the setup :icon_question:

Hello Puntoboy, I'm glad you decided to join. Please check the Forum Rules since your sig and your avatar are against them :icon_rolleyes: