Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

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?

  • Small Business Routers
Everyone's tags (4)
2 REPLIES
New Member

Block foreign IP's on RV042

Anyone have any suggestions at all?

Block foreign IP's on RV042

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

1257
Views
0
Helpful
2
Replies