The SSH proxy supports the general auditing framework of PNS. The SSH proxy can even be configured to audit only certain types of channels, it is not necessary to fully audit all sessions (e.g.: the auditing of large file transfers such as backups is rarely needed). The channels to be audited can be set via the audit_trails attribute. The available channel types are described in Section 4.20.2.1, Configuring policies for SSH channels.