I am looking through the forum for a example similar to what I want to do below
I am looking at setting up a back up connection, and using a routerOS device. ( I do not have a device yet)
(my concern is regarding the incoming connections and unusual behaviour as we would be doing combination of routing and NAT/Forwarding depending on link and am not sure whether the scenario I am proposing is would work, or what types of issues I will come across.
I have a couple of servers/devices that accept remote incoming connections.
They are presently on an DSL link with a subnet of public IP addresses.
The back up link I have been asked to setup is via a HSPDA (3G mobile/cell) modem,
and is only assigned 1 public (external) ipvaddress.
I would like to be able to direct (some combination of routing and Nat/Forwarding etc) incomming connections on specific ports of the backup
3G connection ipaddress to the servers public ipaddresses,
eg port 2001 will go to server 1 (primary public IP 1)
port 2002 will go to server 2 (primary public IP 2)
I am looking for comments and suggestions regarding this.
Thanks
shane
DIAGRAM (made up addresses)
Primary Ba ckup
ADSL HSPDA/3G
Link Link
(public subnet) (1 public IP)
(111.111.111.0/30) (123.123.123.100)
| |
| |
| |
+----------------------- MicroTik -------------------------+
routes 111 subnet
NAT 123 Address to 111 addresses depending on port
eg 123.123.123.100 port 2001 to 111.111.111.1 port 2001
and 123.123.123.100 port 2002 to 111.111.111.2 port 2001
|
|
+--------------------------------+-------------------------------+
| |
111.111.111.1 111.111.111.2