[GENERAL] password-less access, without using pg_hba

[Reece Hart]

I'd like to provide public access, without a password, to a database hosted
on Amazon RDS.

I'm familiar with using pg_hba.conf to enable trust (no) authentication for
a user. pg_hba.conf is not available to DBAs on RDS.

Is there any other way to achieve password-less login in postgresql? I
tried alter user password NULL.

Thanks,
Reece