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RV016 - One to One NAT

Discussion in 'Cisco Small Business Routers and VPN Solutions' started by Craash, Jan 20, 2007.

  1. Craash

    Craash LI Guru Member

    Hi all.

    I have a RV016 (Firmware Version: 2.0.13) that has a 10Mb/s cable connection (dynamic IP) on WAN1 and a 3 Mb/s DLS connection on WAN2. This DLS pipe has 5 static IP addresses.

    I use the cable modem for general purposes, and the static IP's on the DSL are used to route external traffic to internal services (Secondary DNS, Webcamera, etc).

    What I'm running into is that One-To-One NAT won't forward WAN traffic to the internal IP that it should.

    My LAN IP set is 172.20.0.x/255.255.255.0
    The RV016 is 172.20.0.254
    The RVO16's public IP is x.x.x.78
    My five useable static IP's are x.x.x.73-x.x.x.77

    I have one-to-one nat'ed my external static x.x.x.74 to the internal of 172.20.0.6
    I've set up a tempory firewall access policy that allows all traffic, period.

    The log shows the connection from a 3rd party IP when trying to ping x.x.x.74, however the remote machine recieves a timed out error. Of course nothing on this machine is available from the internet side due to this.

    From the router diagnostic side, it can successfully ping 172.20.0.6, howerver this may be key, it can't ping x.x.x.74.

    Ideas?
    01-20-2007 09:30 AM
     
  2. ifican

    ifican Network Guru Member

    Try other services and see if the traffic is actually being sent. I have run into many issues with one to one nat allowing ping traffic. I cannot say why it does what it does but it does not work that way one would think. Try ftp, exchange or some other traffic to see if you can see it on the inside.
     
  3. Craash

    Craash LI Guru Member

    No traffic is being sent at all.
     

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