Give some suggestions applying important security feature in 1841 router.
It connects to leased line n got 8 public ips in lan side.
Purpose is to allow 12 users to use initernet.but users got private ips from main DHCP server where i can mention the gateway or the router.
Can it be done only with NAT?
If only NAT pretect the whole network?
How to prptect external attack.?We need to allow traffic orinate from internal Network only.
GIve a details of wht are the external attacks need to be mitigated.