Dear Experts,
I need a good plan to secure my network, I have 1200 computers connected using a fiber and some DSL links, they all connected to my Core switch 4507. I have implemented a VLAN between the sites, I use symantec AV 10.1, and WSUS, also I have a PIX cisco 520, I need a tools or programs to protect my networks from THE INTERNAL ATTACKS, what rules or software or tools I can use, what is the recommended Hardware to use ( IPS, Firewalls, software), I need to a good plan.
Note: in my VLAN I have enabled the access between the VLANs, this mean that VLAN 2 can access VLAN 3, etc, .
Any Help
Thanks
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