SSH legacy mode replaces the earlier "Enable SSH Protocol 1" SSH-VPN server setting. SSH legacy mode is disabled by default in new installations, but it is automatically activated when upgrading the ARM600 software or restoring a backup of an installation where the following two criteria are met:
- SSH protocol version 1 is enabled.
- Any of the following is true:
- At least one enabled SSH-VPN peer requires SSHv1 support.
- At least one SSH Patrol peer requires SSHv1 support.
If these criteria are not met during upgrade or backup restore - for example, if the SSHv1 protocol was previously enabled, but no peer requires SSHv1 - the legacy mode is disabled.