Can RV042 one-to-one NAT class C addresses?

Discussion in 'Cisco Small Business Routers and VPN Solutions' started by adraut, Jun 27, 2006.

  1. adraut

    adraut LI Guru Member

    The building our office is in is on a private network that is forwarding public IP's to private IP's on their network, but they are not firewalled at all. We would like to take the building's private IP's we were given and one-to-one nat them to private IP's on our office's network. The linksys documentation says it can one-to-one nat valid public addresses to valid private addresses. Does that mean a 192.168.x.x addresses cannot be natted to 192.168.x.x addresses? For example, one-to-one natted to

    I have tried this with a sonicwall and it works just fine. When I do this with the RV042 it does not. The firewall inbound traffic log shows all traffic from the building's private network gateway being blocked.

    Network Layout

    | -- Public IP's forwards
    Building -- Private network using 192.168.x.x addresses
    | -- Public IP's one-to-one natted to private IP's on this network
    My Office -- Private network using 192.168.x.x
    | -- Want to one-to-one nat Building private addresses to My Office's private addresses
  2. Toxic

    Toxic Administrator Staff Member

    afaik most NAT works from a public IP addressing to private IP addressing and not Private to Private.

    however i could be wrong.

    you say you are trying to do a one-to-one nat with two private addresses, may i ask exactly what you are trying to accomplish once this was done?
  3. adraut

    adraut LI Guru Member

    Since the addresses that building's network is forwarding to us are not filtering any traffic at all, we do not want to attach our servers direct to that network with those addresses. The purpose of this is to apply a firewall and port filter between our office network and the building network.

    Like I said, the sonicwall does this with no problem, but only leases 10 addresses without buying more, so we would like to do away with it.

    The linksys works fine with public addresses, but not at all with the private addresses.
  4. Toxic

    Toxic Administrator Staff Member

    tbh I dont think the RV042 would handle this,

    unless you cna get this done via telnet.

    youd be better off with a dedicated package like monowall, that should do the trick.
  5. adraut

    adraut LI Guru Member

    I guess we'll find a way to use both the sonic wall and rv042. Thanks.
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