What about setting host routes in the routers, instead of relying on Proxy
ARP ?

JF


On Thu, 29 Apr 2004, Not Available wrote:

> Hi all,
>
> two old enemies are allying with each other to pop up in my nightmares.
>
> Two firewalls, Windows 2000 SP4, CheckPoint R55 HFA03 - the latest.
>
> Inside and DMZs, vanilla hub/switches.
> Outside, a hub connects the cluster to a couple of Cisco routers configured
> for HSRP redundancy.
>
> Tried out several configurations for the cluster, but the frustrating
> results seem to indicate there are serious problems having static NATs to
> work when working with the cluster: cannot reach NATed services from the
> outside.
>
> If I delete the cluster object, assign the Virtual IPs to physical
> interfaces to one node while the other is off, it works like a charm.
> Automatic ARP does it, OR I can turn it off and use local.arp file.
>
> Working with the cluster is a bit different: outgoing traffic (hidden behind
> cluster external interface) works, inbound traffic doesn't get to the
> servers.
>
> A little troubleshooting seems to blame ARP for it all. When using automatic
> ARP, no luck. Using local.arp file, makes no difference. Tried even
> fwparp.exe, but it worked a few hours then stopped (maybe when the router's
> arp cache flushed).
>
> I tried using unicast load sharing, multicast (even if my routers seem not
> to like mcast very much), HA new mode. Didn't try legacy mode yet, just
> because it is deprecated by CP's documentation.
>
> What turns out in every case is that the cluster seems able to ARP out for
> the cluster virtual IP address, but can't do it for NATed addresses, no
> matter how I try to set it up.
>
> Using automatic ARP it looks like it doesn't arp at all.
>
> Using local.arp would arp on both nodes, confusing the router (and it seems
> the effect is like no ARP at all...)
>
> Are there any experiences you can share on how to configure the cluster in
> such a configuration? Is it possible to make it work with static NAT? Should
> I use automatic ARP or what?
>
> Thanks you all in advance...
>
>     NA
>
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----------
Jean-Francois Gobin - Administrateur gobinjf.be
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