Thanks Martin.
Can the CISCO 877 Router (with build-in ADSL modem) act as firewall
also? It has 4 ports but only one is used now. The router's password is
controlled by M1 because we have no System Administrator. From your
suggestion, I shall buy another wifi router+switch connects to one port
of CISCO 877 and then connect a 24-port switch to the wifi router+switch
and do the same for staff sub-net. In this case the 2 sub-nets are
isolated by the wifi router+switch and the result is the PCs in
student/public sub-net cannot access server and PCs in staff sub-net and
vice versa. Is my understanding correct?
Shall I worry about the speed accessing Internet will be slower due to
one additional router being added as I notice the wifi speed is always
much slower than the fixed line connection (I use
http://www.bandwidthplace.com/ to test speed and the wireless speed is
normally 50% slower). What is the normal delay expected when one
additional router is added? The wifi router+switch we are using now is
Linksys WRT310N. Any suggestion of better make and model?
TIA
Lim Hua Eng
Martin Bähr wrote:
On Wed, Apr 28, 2010 at 12:00:40PM +0800, helim wrote:
Currently my office LAN setup is one common network for both office
staff and the PCs in Computer Lab. We also have a Linksys WRT310N
wireless router which is only for staff but we want to install another
wireless router for students. The broadband is provided by M1 Connect
(originally by Qala which was acquired by M1 last year) with 2MBPS fix
IP with CISCO 877 router with ADSL function. I would like to
re-configure the LAN to separate into 2 sub-nets such that the staff's
sub-net is better protected from potential access by students or
visitors. Can any experienced network experts provide some advice? Thank
you very much.
does not seem to complicated (in theory), you need to physically seperate
the two networks and put a firewall between them.
how easy the physical seperation is depends on your office layout.
in general:
internet---firewall(cisco)---wifi router+switch---lab computers
|
wifi router+switch
|
staff computers
i have a similar (more complex) setup using linux and iptables
greetings, martin.
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