- Cisco Employee,
I meet one issue by using ASA5550.
There are 2 interfaces which is configured in firewall, one is acted as inside and other is acted as outside. I configured static PAT from outside to inside and map one public address to internal e-mail server and dynamic PAT frame inside to outside.
global (outside) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0
static (inside,outside) tcp 212.x.x.1 https 10.x.x.1 https netmask 255.255.255.255
212.x.x.1 is public address which present e-mail server in public network
10.x.x.1 is private address which is e-mail server in private(inside) network
ip address of outside interface is 219.x.x.2/252
1, when I access e-mail server from public network ,it work fine; when I access e-mail server in inside network by using private address 10.x.x.1, it work fine
2, But when I access e-mail server in private(inside) network by using public address 212.x.x.1, it can not work.
I don't know why it is. pls help me to check it.
you need enabling DNS doctoring or hairpining, refer to this link for more details.