Cloud-based Infrastructure for Determining Reachability of Services Provided by a Server

A method comprising:

• running, by a first computer system, a first server, the first server to provide a first service over public Internet Protocol (IP) connections;
• running a second server by a second computer system;
• transmitting, by the first server over public IP connections to the second computer system, a request for the second server to perform forward domain name system (DNS) resolution, the request comprising (i) a hostname associated with the first server used by the first server to provide the first service over public IP connections, and (ii) a public IP address corresponding to the hostname,
• in response to receiving the request for the second server to perform the forward DNS resolution, performing, by the second server, operations comprising
• requesting that a DNS server associated with the second server provide a resolved public IP address that is mapped to the hostname associated with the first server,
• verifying whether the resolved public IP address matches the public IP address included in the request for the second server to check the first service, and
• transmitting a result of verification to the first server;
• and
• updating, by the first server based on the result of the verification transmitted by the second server, an availability status of the first service over public IP connections.

A system comprising:

• a first computer system configured to run a first server, the first server to provide a first service over public Internet Protocol (IP) connections;
• and
• a second computer system configured to run a second server,
• wherein the first server is further configured to transmit, over public IP connections, a request for the second server to perform reverse domain name system (DNS) resolution, the request comprising (i) a hostname associated with the first server used by the first server to provide the first service over public IP connections, and (ii) a public IP address corresponding to the hostname,
• wherein the second server is further configured to perform, responsive to receipt of the request for the second server to perform the reverse DNS resolution, operations comprising
• request that a DNS server associated with the second server provide a resolved hostname that is mapped to the public IP address to which the hostname associated with the first server corresponds,
• verify whether the resolved hostname matches the hostname included in the request for the second server to check the first service, and
• transmit a result of verification to the first server, and
• wherein the first server is further configured to update an availability status of the first service over public IP connections based on the result of the verification transmitted by the second server.

A method comprising:

• running, by a first computer system, a first server, the first server to provide a first service over public Internet Protocol (IP) connections;
• running a second server by a second computer system;
• transmitting, by the first server over public IP connections, a request for the second server to perform reverse domain name system (DNS) resolution, the request comprising (i) a hostname associated with the first server used by the first server to provide the first service over public IP connections, and (ii) a public IP address corresponding to the hostname;
• in response to receiving the request for the second server to perform the reverse DNS resolution, performing, by the second server, operations comprising
• requesting that a DNS server associated with the second server provide a resolved hostname that is mapped to the public IP address to which the hostname associated with the first server corresponds,
• verifying whether the resolved hostname matches the hostname included in the request for the second server to check the first service, and
• transmitting a result of verification to the first server;
• and
• updating, by the first server based on the result of the verification transmitted by the second server, an availability status of the first service over public IP connections.