Let's say we have web servers that are behind a firewall. There are some IP limitations rules applied to the firewall, for several ports / protocols :
- SSH, SFTP, SSH
- Some Web applications (specific port, for instance http://www.application-example.com:8080/)
These are settings, and sometimes they get messed up for X reasons (human interventions or system failure, etc ...)
Is there any service, that offers monitoring capabilities, that send alerts when these restrictions are not working ?
(For the opposite, we have service like Pingdom or IPLabel, that alert if your site is Down. Unfortunatly, we cannot do the opposite with PingDom service)