can you help me with this weird problem?

  • Thread starter Thread starter dneupane
  • Start date Start date
D

dneupane

Hi
I have a server (Win 3K server) in DMZ with two network cards (Network
card 1= E1, Network card 2 = E2)


E1 connects to public network (internet)
E2 connects to private network (database server)


I have added some static routes on the server to route packet to a
database server using "route add" command


Eg
Route add Destination MASK Gateway if Interface1
Route add Destination MASK Gateway if Interface2


After adding route the default gateway in route table is E1. However
after 8-12 hours later route tables gets altered mysteriously and the
default gateway becomes E2.


Once the default gateway gets altered No one can access the server. To
fix this problem I restart the server and add the routes again.


Can someone enlighten? How I can solve this problem.


Many thanks
Niju
 
I would highly recommend you do not use two NIC's and connect your DMZ to
your internal LAN. You've indirectly opened up your LAN to the internet. Put
a firewall between the two. You'll be securing your data and fix any routing
issues.
 
Nics are connected to firewalls, Nic1 connects to outside firewall,
nic2 connects to internal network firewall.

Regards
 
Good to hear. Your E1 NIC should be using a DG of your internet firewall.
The second NIC should have no default gateway. Then you add static routes of
your LAN pointing to your other firewall.
 
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