openssh-rpms/el6

OpenSSH RPM Build for EL6

This project provides an RPM Spec file designed to build a modern version of OpenSSH on Enterprise Linux 6 (EL6) systems.

Key Features

1. Legacy Environment Support (EL6)

Building modern software on EL6 requires handling outdated system libraries. This spec file addresses these limitations to provide a secure, modern SSH server.

2. Static OpenSSL Compilation

Modern versions of OpenSSH require newer OpenSSL libraries than those provided by EL6.

• The spec file compiles a modern version of OpenSSL from source within the build environment.
• Static Linking: OpenSSL is built statically and linked directly into the OpenSSH binaries.
• System Integrity: This ensures the new OpenSSH has access to modern cryptography while leaving the system's original OpenSSL libraries untouched to prevent dependency conflicts.

3. System Perl

Unlike the EL5 build process, EL6 provides a version of Perl (5.10+) that is sufficient for building modern OpenSSL. Therefore, the Perl bootstrap process is not required, and the system Perl is used directly.

Build Flow Summary

1. Build OpenSSL: Use system Perl to configure and build OpenSSL statically.
2. Build OpenSSH: Configure OpenSSH to use the custom OpenSSL headers and libraries.

Default Versions

Versions are typically defined in the version.env file in the project root.

• OpenSSH: (e.g., 10.2p1)
• OpenSSL: (e.g., 3.0.18)