pix having public ip+private ip

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Jan 12th, 2006
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i have a question,i have a pix 501.Now on the inside interface can we have both public ip+private ip's.

internet<-->router<-->pix 501<-->(public ip+private ip)

Pleas tell me how it can be done if possible.

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spremkumar Thu, 01/12/2006 - 23:39
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Its not possible to have both Public/private behind the Inside interface as the PIX doesnt support the secondary addressing concept.

If you have another port (which is not the case with 501) u can assign the public ip to that other free port.


philipmbogo Fri, 01/13/2006 - 03:38
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Option 1:

You will need a layer 3 device(could be a switch) before the pix to achieve this. However this will introduce an additional hop.

Option 2 (recommended): use private ips internally and for the host requiring public ips use static NAT on the pix.

jackko Sat, 01/14/2006 - 08:02
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just wondering what the ultimate goal here. perhaps we can provide a workaround.


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