Re: Reverse IP NAT to secondary IP address

From: Nils Vogels (nivo+sender+8eb026_at_yuckfou.org)
Date: 10/26/03

  • Next message: Nils Vogels: "Re: Reverse IP NAT to secondary IP address" 
    Date: Sun, 26 Oct 2003 03:00:48 +0100
To: freebsd-net@freebsd.org

    "."@babolo.ru wrote:

    >>WWW is a FreeBSD-4.8 box.
    >>Gateway is a FreeBSD-4.8 box with IP Filter
    >>Since the SNMP-server does not have a default route, the traffic needs
    >>to originate from an IP address within the same subnet as the Gateway.
    >>To that end, I have added an alias IP of 192.168.2.1 to the gateway.
    >>When I run an snmpwalk from the gateway all goes fine.
    >>
    >>Since the traffic is coming from WWW and heading through the Gateway,
    >>which does not bridge, I have to perform some form of NATting in the
    >>gateway.
    >>
    >>
    >>
    >configure port with SNMP-server as 192.168.0.17/30 for example
    >instead 192.168.2.1/24, and
    >sysctl net.link.ether.inet.proxyall=1
    >
    >and configure SNMP-server as 192.168.0.18/24
    >
    >If you can change mask of SNMP-server, you can
    >use 192.168.0/24 and 192.168.1/24 on gateway
    >and 192.168.0/25 on SNMP-server.
    >
    >
    Since I have the internet on the same interface, but on the primary IP
    instead, would enabling ARP PROXY not fill the ARP table with every host
    on the internet, that tries to contact the gateway ?

    Greetings,

    Nils.
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  • Next message: Nils Vogels: "Re: Reverse IP NAT to secondary IP address"

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