Cisco Systems Howto hit an external ip with VPN

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Subject Author Date
Howto hit an external ip with VPN Boban 09-27-05
Posted by Boban on September 27, 2005, 4:11 pm
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Hello

I have one question. How do i hit an external ip address through a VPN
connection to my Cisco Pix 501.

The problem is, that i can only hit the external site from my PIX
outside ip address .

thnx :)

/Jacob

Posted by Walter Roberson on September 27, 2005, 8:45 pm
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:I have one question. How do i hit an external ip address through a VPN
:connection to my Cisco Pix 501.

:The problem is, that i can only hit the external site from my PIX
:outside ip address .

Sorry, I am not sure exactly what you want to do.

If you want to be able to connect to a PIX 501 through a VPN from
outside, and have traffic on that VPN able to go out to the internet
through the outside interface, then that is something that cannot be
done on the PIX 501.

Several other PIX models make it -possible- in 6.2 or 6.3, but it is
"work" to set up and requires multiple public IP addresses. You could
do it in PIX 7.0, but 7.0 is supported only on the 515/515E, 525, and
535 for now.


You might perhaps mean something different, though: you might be asking
how you can have a VPN connection in which the VPN user connects to
a resource on the inside of the PIX 501, using the external IP address
of the resource instead of the internal IP address. If that is what
you are trying to do, then you either need to adjust the crypto map
match address ACL and the nat 0 access-list ACL (both). If
you are using vpn groups instead of crypto maps, you would need to change
the nat 0 access-list ACL, and possibly adjust the "split-tunnel" ACL
if you are using one.
--


Posted by Boban on September 28, 2005, 3:05 pm
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Walter Roberson wrote:
> :I have one question. How do i hit an external ip address through a VPN
> :connection to my Cisco Pix 501.
>
> :The problem is, that i can only hit the external site from my PIX
> :outside ip address .
>
> Sorry, I am not sure exactly what you want to do.
>
> If you want to be able to connect to a PIX 501 through a VPN from
> outside, and have traffic on that VPN able to go out to the internet
> through the outside interface, then that is something that cannot be
> done on the PIX 501.
>
> Several other PIX models make it -possible- in 6.2 or 6.3, but it is
> "work" to set up and requires multiple public IP addresses. You could
> do it in PIX 7.0, but 7.0 is supported only on the 515/515E, 525, and
> 535 for now.
>
>
> You might perhaps mean something different, though: you might be asking
> how you can have a VPN connection in which the VPN user connects to
> a resource on the inside of the PIX 501, using the external IP address
> of the resource instead of the internal IP address. If that is what
> you are trying to do, then you either need to adjust the crypto map
> match address ACL and the nat 0 access-list ACL (both). If
> you are using vpn groups instead of crypto maps, you would need to change
> the nat 0 access-list ACL, and possibly adjust the "split-tunnel" ACL
> if you are using one.

Correct.. I want to use my laptop from the internet. Connect through a
VPN connection to my PIX501 at home, and then use my tunnel on the VPN
connection to go out on the internet through the PIX501 outside IP
address. What i can see from your answer that i not possible. :(

Thank for you answer

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