From: Rod Seney (rodseney@yahoo.com)
Date: Fri Jun 16 2006 - 14:14:35 EDT
Rocky,
I would just write ACL lines to prevent all traffic
from your "public" network addresses with a
destination to your two "private" networks addresses.
I would put it inbound on the "public" network's FE
interface.
Rod
Rod Seney - CCNP, CCSP
IT Manager
Butler Automotive Group
--- Rocky <pixscreenpoint@gmail.com> wrote:
> Thank you again for very helpful inputs.
>
> my network is very simple, i make it simple :)
>
> Internet---T3/3845 IOS FW/IPS-----Three FE
> interfaces(internal net).
>
> the 3 FE interfaces are totally independent to each
> other with their
> own MS Server2003 AD with different application
> running on each
> and also different sets of private ip address on
> each network.
>
> One FE interface network is public access with 3
> wireless AP and it
> should not access the 2 other network and vice
> versa.
>
> Most of our heavy traffic came from this
> network(public access) which
> mostly http traffic that i can see through NBAR and
> MRTG..P2P clients
> are blocked from all internal network. Our deeply
> concerned is the public
> access network which might or has a potentials to
> access the 2 other
> internal networks.Thats what my director is scared
> of, and he is
> concerned that someone
> is accessing the workstations inside the 2 network.
>
> Using NMAP,Nessus to penetrate the 2 internal
> network and servers
> are not giving me any responses that is why i'm
> pretty sure that the
> 2 network is secured. ICMP traffic is deny from all
> interfaces and each
> network are also define in my ACL to deny, i just
> permit one
> workstation for troubshooting purposes.
>
> As i said i cannot fathom my director of what he
> wanted coz he doesn't
> much understand about network security technology.
>
> Is there any way to segregate this public access
> interface from
> the other 2 interfaces? do you think this designed
> is not appropriate?
>
> Thanks again,
> Rocky
>
>
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you need to proactively protect your applications from hackers. Cenzic has the
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