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+# Configure PostgreSQL with FIPS Mode (OpenSSL 3.x)
+
+You can activate FIPS mode by inheriting the cryptographic behavior from OpenSSL, so if your OpenSSL is FIPS-validated and runs in FIPS mode, PostgreSQL automatically uses it.
+
+in one of two ways:
+
+## Install Prerequisites
+
+```bash
+sudo apt install build-essential perl git wget
+# or on RHEL / Rocky:
+# sudo dnf groupinstall "Development Tools"
+# sudo dnf install perl-core wget git
+```
+