Abstract: This study provides documentary evidence of the evaluation and implementation of pfSense’s defense and protection mechanisms to avoid a HWFTBYPASS (Hardware firewall bypass) attack which is implemented through Remote Desktop Protocol (RDP). pfSense is an extremely robust open network security software. To achieve the above, the part of the attack that corresponds to the bypass the hardware firewall will be implemented in such a way that it will be possible to infer whether pfSense is by default vulnerable or not and in that case, mitigation methods will be addressed.