Hi,

I have a couple of questions re: my LEAF configuration...

1. when i'm assigning additional ip addresses to eth0, do I need to
include the subnet mask or will just the additional addresses do?

2. i've opened a port and setup a rule (with Charles' help - thanks
Charles) to direct mail to an internal mail server....
EXTERN_TCP_PORT0="0/0 smtp 212.107.213.11"
INTERN_SERVERS="tcp_212.107.213.11_smtp_192.168.175.1_smtp"

When I test the system however, I get no mail through...  also, I can
ping both the primary eth0 address, and the .12 address I added from the
internet.  There is no reply from the .11 address.

Any idea what I'm doing wrong?

Cheers,

MW



> I'm trying to configure a backup/replacement of a Sonicwall firewall
> which sits between our company LAN and an ADSL router.  We have been
> allocated a range of IP addresses....
>
> 212.107.213.9 (the adsl modem)
> 212.107.213.10 (firewall WAN interface)
> 212.107.213.11 (incoming email comes to this address)
> 212.107.213.12 (DMZ - not used yet)
>
> We run MS Exchange on the LAN server  (192.168.175.1)  - there is a
> 'one-to-one NAT' entry in the (old) firewall which lets incoming mail
> through to the mail server (directs incoming traffic 212.107.213.11 >>
> 192.168.175.1)

> BUT,  I'm struggling to find how I can set a rule which would direct
> mail arriving at 212.107.213.11 to the mail server at 192.168.175.1.
>

You're on the right track.  You first need to allow e-mail traffic
through the firewall filters with the following:
EXTERN_TCP_PORT0="0/0 smtp 212.107.213.11"

Then, port-forward the traffic to your exchange server:
INTERN_SERVERS="tcp_212.107.213.11_smtp_192.168.175.1_smtp"

Of course, you also have to have the extra IP's assigned to the external
interface for this to work:
eth0_IP_EXTRA_ADDRS="212.107.213.11 212.107.213.12"

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