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micheal.horner
Beginner

Block foreign IP's on RV042

I'm having some problems blocking IP blocks.  I have several blocks of IP's that I want blocked.  For example:

I want to block 77.0.0.0/8 from communicating with a server on my lan.

So I make a rule in the RV042 to deny all traffic from 77.0.0.0 to 77.255.255.255, source wan1, destination lan, my server's ip, time: always.

As soon as I move that rule above the traffic forwarding rules I have created, no traffic moves in or out via the wan interface.  It seems to just cut off all traffic.  What am I doing wrong?

2 REPLIES 2
micheal.horner
Beginner

Anyone have any suggestions at all?

I would recommend you to use an access list on the router like this:

first deny the access:

Access list # deny ip 77.0.0.0 (wildcard) 77.255.255.255 (wildcard)
Then do not forget to allow the access of the rest of connections as a final entry, so you do not have this problem.
Access list # permit ip any any

and finnaly to assign the th access group to the interface.

interface (serial/fast/ethernet) #/#
  ip access-group # in

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