IDS helps

Dear All

I have another important question.

Now I have my IDS connected to my lan.. my network is like this ...

I have 20 sites(Networks) 9 of them are connected using a Fiber cable (same subnet) and the other are connected to me using one router.
Can IDS in my location (site1) detects the Intrusions in other sites which connected to me by a router??
i can ping any Ips in thos sites.

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ibmas4002Asked:
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Tim HolmanConnect With a Mentor Commented:
No.  IDS's need to be on the same physical network to sniff and analyse the data, and work at layer 2.
In theory, you could setup SPAN / RSPAN ports on your switches, and trunk the entire layer 2 of all your networks to a single point on your own network, but you'd need a pretty big IDS to cope with all that.

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ibmas4002Author Commented:
tim_holman Thank you
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