Why Monitor Web Health Externally?
In some environments, administrators assign multiple IP addresses to a single server for the following benefits:
Host multiple web applications/services on a single server by using multiple SSL certificates on a single server and associating each certificate with a specific IP address, in a way that each website/web application can have its own IP address.
Operate network appliances, such as firewalls or load balancers, that have multiple IP addresses for each network interface.
Redirect internal traffic to a standby instance in case an active instance fails, by reassigning the secondary IP address to the standby instance.
Additionally, administrators can have control over showing IP addresses to external people. This way, malicious attacks/threats can be prevented. Since hosting different web applications/services on multiple IP addresses on a single server offers various benefits to the organization, it is necessary for administrators to track availability of all the IP addresses on the host sever to ensure uninterrupted provision of web applications/services to end users. Unavailability and inaccessibility of the IP addresses will not only deny access to the web applications/services to users but also seriously affect the reputation and revenue of the organization. To avoid such inconveniences, unavailability of IP addresses of the host system should be proactively detected without needing much effort and prolonged hours. This can be easily achieved using a specialized monitoring model offered by eG Enterprise.