How to Enable Weaker Algorithms in the Built-in OpenSSH Server

Problem

You are trying to connect to the built-in OpenSSH server of IGEL OS with an SSH client which does not support the strong algorithms of the server.

Solution

To enable weaker encryption algorithms, proceed as follows:

1. In Setup, go to System > Registry > network > ssh_server.

2. Change the settings according to your requirements:

   • disable_weak_encryption: Disable this option to enable weaker encryption.

   • disable_weak_hostkey_algos: Disable this option to enable weaker host key algorithms.

   • disable_weak_kexalgorithms: Disable this option to enable weaker key exchange algorithms.

   • disable_weak_macs: Disable this option to enable weaker MACs.

   • minimal_encryption_level: The minimal level of encryption