Hi,
on linux you don't need the local.arp file. If you use Static-NAT you can
enable proxy_arp on the external interface by putting this line in your
/etc/rc.d/rc.local. And this is if your external interface is 'eth0'.
echo "1" >/proc/sys/net/ipv4/conf/eth0/proxy_arp
then if you use the local firewall sendmail as an SMTP-relay you need to
activate sendmail on the network-interfaces (by default it is only active
on loopback interface). This setting you will find in /etc/mail/sendmail.mc.
best regards
//Claes Jansson
At 09:20 2001-11-14 -0500, you wrote:
>Hello,
>
>I sent an email earlier regarding a mail problem with the firewall. I
>recently setup a RH 70 machine with 4.1 sp3. Everything is working fine
>except for mail. We have one static NAT rule for our SMTP server
>(exchange). I added the arps and Static Route to the rc.local file and
>they seem to work great, also added the local.arp file to STATE dir.
>The old firewall that was setup was an NT 4 box that passes mail fine.
>The moment I cut over to the linux server, no mail gets sent out or
>received. I do see accepts in our log viewer from our mail server to
>random IP's, but no mail is leaving and no mail is returning. From an
>outside line, I can telnet to the static address on port 25 and I reach
>the mail server. WHAT AM I MISSING?
>
>any help would be appreciated.
>
>Thanks,
>
>Aeon
>
>PS. I used automatic STATIC nat rules and i've checked them a couple
>times.
>
>The Dalai Lama says, "Those things which will work out, there is no use
>worrying about;
> Those things which won't work out, worrying won't help."
>
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