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IP redirection

brian.wilson
Level 1
Level 1

Hi,

We have a PIX 515E running 6.2(2).

I'm trying to redirect anything coming inbound on to a certain IP address and port to a different IP address. For example;

traffic coming into the PIX for 13x.11x.21x.3 on port 25 needs to be sent to 13x.11x.21x.5 on port 25. It would be nice if we could do it based on where the traffic comes from.

The catch is our pix is 'backwards' - private addressing on the outside and public addressing on the inside. We do not NAT because we come out with native public addresses.

Help is appreciated, can't seem to grasp this because of the way our network sits.

Thanks to all in advance.

3 Replies 3

jaydhindsa
Level 1
Level 1

Hi Brian,

Could you please provide some more information, what exactly you want to achieve.

traffic redirection is easily achieved with static(inside,outside) and IP addresses used on inside or outside doesn't matter as IOS only works on binary.

Thanks

Jay

Here is a good explanation of ICMP Redirects - maybe this helps people out there trying to figure it out:

http://blogbt.net/index.php/2013/08/icmp-redirects/

atif.awan
Level 3
Level 3

You need to use port redirection with static commands to achieve this. The following link should help you in this regards:

http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_tech_note09186a0080094aad.shtml#topic9