hi ya luis
for subnets.... say 4 depts isolated from each other...
a) make sure yoou have a switch.. NOT a hub that ties them together
so that they cannot sniff traffic on the other side...
( a 4-port firewall is good )
Each dept has its own class-C ( simple way )
----------------------------
192.168.1.x 192.168.2.x 192.168.3.x 192.168.4.x
NetMask: 255.255.0.0
Network: 192.168.0.0
Broadcast: 192.168.255.255
if you only have ONE class-C to be subnet ( 4 subnets fo 62 hosts each )
-----------------------------------------
( people can change their masks to peek at the other side
( unless you have a 4-port firewall
192.168.1.0 192.168.1.64 192.168.1.128 192.168.1.192
NetMask 255.255.255.192 255.255.255.192 255.255.255.192 255.255.255.192
Network 192.168.1.0 192.168.1.64 192.168.1.128 192.168.1.192
Broadcast 192.168.1.63 192.168.1.63 192.168.1.63 192.168.1.63
more subnet stuff
http://www.ralphb.net/IPSubnet/
http://vger.freesoft.org/CIE/Course/Subnet/
http://www.completeis.com/support/subnet/
http://www.cisco.com/warp/public/701/3.html
http://www.sinclair.org.au/keith/networking/subnet1.html
.. tons of um ...
http://www.ibiblio.org/pub/Linux/docs/HOWTO/mini/other-formats/html_single/Proxy-ARP-Subnet.html
have fun
alvin
On Thu, 7 Feb 2002, luis wrote:
> Hi, I have been told that in order to keep the different company
> departments "isolated" each other( but everyone accessing internet), I
> have to use subnetting. after the reading of some books and articles, I
> haven�t found any reference (one indirect but not useful). But I think that
> I need firewalls to do the job. So I�m asking for some light, reference to
> article, experience, book... whatever.
> Thanks a lot
> luis
>
>
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