Re: NetReg: DHCP Questions?

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From: Baron M Rawlins (brawlins@washjeff.edu)
Date: Tue Sep 23 2003 - 14:18:23 CDT

The subnet mask alone won't stop machines from talking to each other, it
just forces
that traffic to go through the router specified for default gateway. You
would need an ACL (Cisco speak) like

access-list 150 deny ip 192.16.1.0 0.0.0.255 192.168.1.0 0.0.0.255

at the router to stop the traffic.

The DHCP server part is simple:

subnet 192.168.1.0 255.255.255.0
{
 option subnet-mask 255.255.255.255;
 option routers 192.168.1.1;
 }

----- Original Message -----
From: "Brad Pinkston" <bpinksto@centenary.edu>
To: <netreg@southwestern.edu>
Sent: Tuesday, September 23, 2003 2:11 PM
Subject: NetReg: DHCP Questions?

> Has anyone considered giving out addresses with subnet masks of
> 255.255.255.255 to allow internet use only and no networking? Correct me
> if I'm wrong, but wouldn't this cut down on broadcast traffic(small
> concern) and infection from viruses such as blaster(huge concern of
> course). How would this be done with ISC's DHCP server?
>
> Brad Pinkston
> Firewall/Network Administrator
> Checkpoint CCSA
> Centenary College of LA
> (318) 869-5721
> bpinksto@centenary.edu
>
>
>
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