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Using /32 subnets in Site to Site VPN setup?

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Using /32 subnets in Site to Site VPN setup? - 29.Mar.2013 2:22:52 PM   
kspurgin

 

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Joined: 29.Mar.2013
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I am trying to figure out a subnetting issue over a VPN Site to Site tunnel.

We need to reach a customer server on their network for development work, but they insist that all internal subnets be /32 subnets. We need 6 developers to reach their server (10.11.12.13/32), so they created rules on their side to allow our six subnets similar to x.x.x.21/32, x.x.x.22/32, etc. This is a new configuration for me and it has me on the ropes.

The setup I am tying to figure out is:

x.x.x.21/32 |
x.x.x.22/32 |
x.x.x.23/32 |--(Endpoint)--(Internet)--(Endpoint)--| 10.11.12.13/32
x.x.x.24/32 |
x.x.x.25/32 |
x.x.x.26/32 |

I CAN make this tunnel works with ONE of the subnets in our list of internal networks, but if I add an additional subnet it breaks. I confirmed the behavior via with pings and a http connection to their server: One subnet works, a second one breaks them both.

I have researched this but it has me stumped. Any advice or guidance would be appreciated!

_____________________________

KSpurgin
Post #: 1

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