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I am sure this is really simple?

rayleask1
Level 1
Level 1

‎10-08-2007 06:59 AM - edited ‎03-09-2019 06:58 PM

We have just installed a new ASA5510 and I have a problem with I think Natting. Forgive me if its really simple but I have next to no experience of Cisco boxes.

I need to allow SMTP from an outside link. Its not the Internet.

The source IP is 172.24.52.50

The Firewall Interface is 172.24.52.4

The Inside Interface is 151.176.90.192

The SMTP server is 151.176.90.220

I need to NAT this link 'cos there are other smtp links that expect the 52.4 interface. The Packet Tracer within ASDM fails at the NAT stage and I notice that both Input and Output interfaces are both the 52.4 interface. Can anyone tell me what config I should have to NAT between the two boxes? I currently have a static one

Thanks, Ray

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tstanik
Level 5
Level 5

‎10-12-2007 09:57 AM

As you have only a single IP address coming to inside which you want to NAT, you should use static NAT for this. Use the "static" command to NAT the incoming IP address. Following link may help you

http://www.cisco.com/en/US/docs/security/asa/asa72/command/reference/s8_72.html#wp1202525

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