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nat for a mail server

I am looking for a bit of help.

I need to enable NAT thought to a mail server for a couple of weeks while we carry out upgrades. Up untill now I have only used this Astaro as an http proxy.

As I don't have the option to enable the mail proxy features I was wondering if someone could point me in the right direction.

I have added an additional IP address to the WAN to be used for the nat.

I assume I would create an SNAT from the mail server OUTBOUND to the internet.?

Would I also create a DNAT inbound to the mail server?

In addition to smtp I need 80 and 443 open for webmail and 1 additional port for another service.

I have already configured the additional services and the host for the mail server.

Do I need to do packet filters in addition to the nat's?

An example would be of great use if anyone has one.

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0 dislo over 13 years ago

You have actually nailed it. Yes create the snat it should look something like src:mailserver->dst:internet whatever ports you need to redirect source=externalmail. Yes you would need to create a dnat rule. It would look something like src:internet->dst:externalmail ports you need to redirect destination=mailserver. Just click the make packet filter rule.

Dislo
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0 MartinUre over 13 years ago in reply to dislo

@derekrussell:
What kind of server do you have? Is it just a virtuell server?
Or is it a real server what you have to put in a Rack like this one
lehmann-it.de/de/19-zoll-schrank/19-zoll-office-rack.html]www.lehmann-it.de/.../19-zoll-office-rack.html
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0 BAlfson over 13 years ago

If you are interested in testing Astaro Mail Security, your reseller can supply you with a 30-Day demo license.

Cheers - Bob

Sorry for any short responses! Posted from my iPhone.
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0 Ol Deda over 13 years ago in reply to MartinUre

@derekrussell:
What kind of server do you have? Is it just a virtuell server?
Or is it a real server what you have to put in a Rack like this one
19" Office Racks - Serverschrank- und Netzwerkschrank-Programm?

I don't think NAT rules will work on Rack's like this
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