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Map private IP to outgoing public ip address

Posted on 2011-03-03
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Last Modified: 2012-05-11
We use a Cisco ASA 5510 in our data center. Admittedly I am not familiar with this firewall at all, working mainly on Fortigate units. I am looking to map one of our private IP addresses to one of our available public IP addresses on our WAN for the purpose of sending out email. I am hoping someone can get me started in the right direction to get this accomplished.

Regards,
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Question by:GCaron
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Expert Comment

by:Llacy80
ID: 35027149
access-list incoming extended permit tcp any host 66.xxx.xx.x eq www
static (inside,outside) 66.xx.xx.xx 192.168.100.6 netmask 255.255.255.255
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Author Comment

by:GCaron
ID: 35027196
Any idea how to achieve this using the Cisco ASDM 6.1 GUI?
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by:Llacy80
ID: 35027224
Sorry. It would look like the statement below rather than the one I posted above since you will be using smtp

Command to Enable Nat -->
global (outside) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0 0 0


static (inside,outside) 66.xx.xx.xx 192.168.100.6 netmask 255.255.255.255  -- This is your NAT statement that you want to add

access-list incoming extended permit tcp any host 66.xxx.xx.x eq smtp  --- This is your access rule that allows smtp traffic
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by:Llacy80
ID: 35027231
I am not sure. I have never used the Gui before : -(.... Hopefully someone else can help with that.


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Llacy80 earned 2000 total points
ID: 35027282
http://www.cisco.com/en/US/docs/security/asdm/6_1/user/guide/nat.html#wp1072634

Go down to the Configuring Static Policy NAT, PAT, or Identity NAT  section (Figure 21-22) will show how to configure Static Nat through the Gui interface.

The same guide will also show you how to set up the access rule for SMTP through Gui.
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