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IP Restriction

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7 replies

by heinrichmarco

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I have many NT Wokstation working with IPX and IP on a Novell 4.12 network. The thing is I need to block some (IP) user from going out of the LAN to internet, but steel leaving the IP protocol for applications. I can configure the IP router in Win95to block them, but i don't know how to do it in Win NT. I'm using a DHCP server witch i don't have control to obtain the IP addresses.

7 replies

by 3565dal

First find out what IP he has, Change from DHCP to Static IP with the same IP. Go to the DHCP server and exclude that IP from the pool. This way you won't get any IP conflicts and now you know his IP.

by tony hogan

Another solution: if you can configure by range, you can use reservations in DHCP and block based on the range. Depends on the number of users who need access vs. the number to block. You may want to turn this around and block globally and statically assign or reserve for only those who get internet access.

by alphageek

Not sure where your Internet access is coming from. If it's through a router or a Novell server, etc.

Easiest solution is to setup a machine to act as a Proxy to the internet. One that has a the ability to allow/disallow based on user authentication. Block all outbound connections to the internet at the router/server to all except the proxy.

Then just setup all the clients to use the proxy to access the internet. Only the proxy will be allowed to make a physical connection to the internet and your client access will then be based on username/password. This avoids the whole problem of assigning static IP's to clients and then reserving them on the DHCP server.

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