how to secured network from hacker and viruses

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

i have setup of 20 machines.1 domain controller ,18 client with 2000pro and
one gateway machine as an workgroup not member of controller .all pc have
static ip range.i have implemented Routing with to nic on gateway machine and
working fine.my all workstation including controller also access internet
through gateway machine.now because of public ip machine can be hacked so how
can i secure my gateway machine from hacking ,also can i minimize virus
attack in my network?can you guide me step by step for basic? nat is enabled
but how can i crosscheck it?
please help me .i am beginner ,also how can i block ports and which port no
to be blocked? to keepnetwork safe. any good suggestion for antivirus
 
If you are in a rush and need a fix right now, I would use a Firewall
appliance (such as SonicWall etc. with Network Antivirus for all your
users). This will give you some good protection and peace of mind while you
learn more.
 
What is your gateway machine running (RRAS on Windows 2000/2003 or ISA
product on Windows 2000/2003 ??) ?

Giving static private IP address to each LAN machine and running NAT on
gateway machine is one protection.
You can configure the gateway machine to only accept outgoing connections
and no incoming connections using Basic firewall of RRAS.
If your gateway machine is running ISA, you can use its firewall.

All depends on what is your gateway machine running
 
hi,
my gateway machine is running in win2000adv server, how to configure macnhe
to
only accecpt outgoing connection,(firewall),then can i download files from
internet.now something happening interesting if on gateway machine (RRAs),if
i install ISA then my gateway stop accessing internet,my both nic 's shows
zero packet received,if i give ioconfig /all it is not showing any adaptor
but they are in my network place with ip settings,i can see that.any
connection of ISA with RRAs.because now gateway machine stoped working .even
though i reinstalled RRAs
 
If you are running RRAS and just want to accept outgoing conn, then u can
use basic firewall feature inside RRAS MMC Snap-in. You can configure it to
drop all incoming connections on public interface (connected to interface).

Regarding installation issue after you install ISA, you should post to
microsoft.public.isa.vpn.

--
Regards,
Samirj
 
Back
Top