Concealing internal applications that are accessed over a network

A method for accessing hidden internal applications over a network, comprising:

• receiving an access request at an access server, the access request being received at a listening port from a user device, wherein the access request includes a random number;
• opening for a time interval an access port in a firewall for accessing an internal application, wherein the access port is selected based on the random number and is different than the listening port;
• establishing a connection between the user device and the internal application based on communication through the open access port during the time interval;
• and
• closing the access port while allowing the established connection to persist.

A non-transitory, computer-readable medium comprising instructions that, when executed by a processor, cause the processor to perform stages for accessing hidden internal applications over a network, the stages comprising:

• receiving an access request at an access server, the access request being received at a listening port from a user device, wherein the access request includes a random number;
• opening for a time interval an access port in a firewall for accessing an internal application, wherein the access port is selected based on the random number and is different than the listening port;
• establishing a connection between the user device and the internal application based on communication through the open access port during the time interval;
• and
• closing the access port while allowing the established connection to persist.

A system for accessing hidden internal applications over a network, comprising:

• a non-transitory, computer-readable medium containing instructions;
• and
• a processor that executes the instructions perform stages comprising:
• receiving an access request at an access server, the access request being received at a listening port from a user device, wherein the access request includes a random number;
• opening for a time interval an access port in a firewall for accessing an internal application, wherein the access port is selected based on the random number and is different than the listening port;
• establishing a connection between the user device and the internal application based on communication through the open access port during the time interval;
• and
• closing the access port while allowing the established connection to persist.