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06.28.2007 at 06:43AM PDT, ID: 22664034
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7.6

Question regarding NAT on ASA 5505/Protocols

Asked by bkana in Networking Hardware Firewalls, Network Software Firewalls

Tags: , ,

This may not be possible through a firewall, but Is it possible to route different protocols through  a NATed IP address to more then one IP address on the private network? Let me explain:

I currently have a mapping on my  ASA 5505 that is 216.xx.xx.10 mapped to 192.168.0.62 (internal mail server). I have ports SMTP and HTTP open for Mail and Outlook Web Access respectively on that IP address.
I recently installed an anti-spam server (192.168.0.5)  to sit in front of my mail server and changed the firewall to now map 216.xx.xx.10 to this server, which in turn forwards mail to my exchange server.

After changing the mapping on the firewall I obviously loose the ability to access e-mail remotely because now 216.xx.xx.10 points to the anti-spam server, which doesn't have exchange on it, nor IIS.

Is there a way to have one mapping for 216.xx.xx.10 > 192.168.0.5 for SMTP traffic and
another mapping for 216.xx.xx.10 > 192.168.0.62 for HTTP traffic?

MY ISP holds my A and MX records for server1.domain.org (216.xx.xx.10 )

Bill KanaStart Free Trial
[+][-]06.28.2007 at 07:28AM PDT, ID: 19381044

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[+][-]06.28.2007 at 07:57AM PDT, ID: 19381337

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[+][-]06.28.2007 at 08:00AM PDT, ID: 19381355

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[+][-]06.28.2007 at 02:01PM PDT, ID: 19384787

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[+][-]06.29.2007 at 05:01AM PDT, ID: 19388568

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[+][-]06.29.2007 at 06:21AM PDT, ID: 19389268

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[+][-]06.29.2007 at 08:23AM PDT, ID: 19390574

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[+][-]06.29.2007 at 08:36AM PDT, ID: 19390722

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[+][-]06.29.2007 at 08:37AM PDT, ID: 19390749

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About this solution

Zones: Networking Hardware Firewalls, Network Software Firewalls
Tags: asa, nat, 5505
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Solution Provided By: poweruser32
Participating Experts: 2
Solution Grade: A
 
 
 
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