[mothered]

Can anyone discuss this issue further?

It's not possible to provide conclusive answers based on a generalized question.

Every firewall Is configured differently to some degree, hence research Is of the utmost Importance prior to moving forward.

It's true.
I must bypass it without knowing configurations.

It's pretty difficult to bypass It, when you don't know what you're dealing with.

You need to Identify the type of security rules In place, whether data sanitization (to prevent malicious requests) has been Implemented, the nature of the error messages returned, packet filtering (If any) and the list goes on. This Is just a minority, but It can significantly help to circumvent the firewall.