Dlink Router DSL-2730U

I am using BB connection with above mentioned router, we are using 4 machines but not able to ping and share files with each other.
it seems ping is blocked on router level, can someone please help on it.
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Can you access the Internet from those 4 computers?

If they are windows machines, it may be that the windows firewall is blocking traffic, or , if you have an Av program like Symantec or kaspersky, it maybe that they have a firewall enabled and is blocking your internal traffic.

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SM_exchangeAuthor Commented:
i have already checked these with another router working fine but not with dlink and ofcourse internet is working fine
can you take a screenshot of your dlink LAN configuration Page. you may have LAN side Firewall enabled.
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SM_exchangeAuthor Commented:
Not that page,

Click on setup tab, then LAN. Take screenshot.
SM_exchangeAuthor Commented:
attached is the Home Screen i am getting now tell me which option i need to select there is no LAN showing.
SM_exchangeAuthor Commented:
after clicking Local Network attached is the one,
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