Kenneth Gonsalves wrote:
> On 14-Jul-07, at 7:59 PM, Tom Eastep wrote:
> 
>>> balancing works perfectly for http - but not for smtp etc
>>>
>> http is being proxied so it all outgoing connections are from the  
>> firewall.
>> One potential problem in your configuration is that you are not  
>> masquerading
>> the local network (192.168.2.0/24) out of eth3. So no local traffic  
>> can work
>> through eth3.
> 
> I did that and everything is fine. Now I have to add a third isp -  
> what will the masq file look like then?
> 

For each of N firewall external addresses, you need to consider what
happens if a connection with that address as SOURCE is sent out of each
of M external interfaces.

And for each of L local LANs, you need to consider traffic that
originates on that LAN and that is sent out of each of the M external
interfaces.

Follow the above advice and it will work for N external addresses on M
external interfaces with L internal LANs for all values of L, M and N.

-Tom
--
Tom Eastep    \ Nothing is foolproof to a sufficiently talented fool
Shoreline,     \ http://shorewall.net
Washington USA  \ [EMAIL PROTECTED]
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