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Re: Setting up an IDS system
From: "Ivan Coric" <ivan.coric () workcoverqld com au>
Date: Sat, 01 Feb 2003 10:16:32 +1000

Hi Naman,

reply in line

 "Naman Latif" wrote

1. Is it a safe practice to have access to this system from Inside
Network (for retrieving log files etc) from 1-2 Stations ? Of course
IDS
won't have access to inside network and be blocked by Firewall.
Have the ids box dual homed, 1 NIC for the DMZ with no ip address, if
you like a read only cable too. 2nd NIC back into your LAN for logging
and admin. A default install of RedHat has ip forward off. Have only SSH
listen only on the internal LAN NIC (#ListenAddress 0.0.0.0)

2. What kind of services should be running on IDS Station ? Should all
Web\FTP etc services be stopped ?
If you mean daemon services, than I personally would have only SSH for
admin.

3. How important it is to also have an IDS system monitoring the
traffic
on your Inside Network ? I believe it won't be a good idea to have the
SAME DMZ IDS system with another NIC monitoring Inside Network Traffic
?
depends on what your company does, how valuable is the info traversing
your infernal LAN and how much do you trust your employees.

Any other suggestions OR any Links that I can refer to ?
get another box, put a couple of NICs into it and you'll have a great
IDS/sniffer that will teach you about your internal network, help with
troubleshooting and give you an idea of what goes on there. Can be a
very inexpensive box, P200, 128mb RAM, 20G HD would do just nicely.

cheers







Ivan Coric
IT Security Officer
Information Technology
WorkCover Queensland
Ph: (07) 30066414 Fax: (07) 30066424
Email: ivan.coric () workcoverqld com au


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