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- Enable port forwarding on your firewall.
Each server that you wish to monitor from outside the firewall must have a distinct port assigned to forward incoming connections to the correct NAT address. The exact procedure to enable port forwarding will depend on your firewall manufacturer (please contact your firewall vendor for assistance).
- Create hostname alias addresses on the monitoring station for each NAT address behind the firewall that you want to monitor.
For example, if your firewall address is fw with an IP address of 192.168.19.200 and you want to monitor the servers named mailbox and filestore, you must add the two named aliases to the firewall IP address.
Creating and editing aliases for each server you would like to monitor is done on the monitoring station system by editing a local system file to recognize these aliases. The alias file can be found in the following locations on most common platforms:
Code Block language text Linux and Solaris: /etc/hosts
Windows: C:WINDOWSsystem32DRIVERSETCHOSTS
The format for this file is the same across all platforms. The following is an example of the line you would add (or update) in this file to create aliases for the two NAT servers behind the firewall.
Code Block language text 192.168.19.200fw mailbox filestore
Note title Note Choose alias names that do not already exist on your network Ping all three addresses from the monitoring station to verify that the aliases have been properly created. If they have, you should receive a reply.
- Add your servers into up.time using the web interface.
When adding each server, enter the alias that you have created in the Host Name field of the up.time Add System window. Set the communications port to the port that you have assigned to be forwarded to the correct server through your firewall.