We have Cisco 87x routers and 2 sites lets call them siteA and siteB. There is a Cisco VPN tunnel between siteA and siteB setup using the SDM Wizard.
The problem we have is if we create any incoming NAT rules like the following -
At SiteA incoming NAT rule for SMTP to 192.168.0.1
Then from SiteB no-one can connect to SMTP at 192.168.0.1
This is the same for any NAT rule I create coming into SiteA then becomes unavailable for SiteB users. Why is this? What can I do about it?