Clients Feature ComparisonΒΆ

The two available client types, default native clients based on ssh2-python (libssh2) and clients under pssh.clients.ssh based on ssh-python (libssh) support different authentication mechanisms and features.

Below is a comparison of feature support for the two client types.

Feature

ssh2-python (libssh2)

ssh-python (libssh)

Agent forwarding

No

Not yet implemented

Proxying/tunnelling

Yes

No

Kerberos (GSS) authentication

Not supported

Yes

Private key file authentication

Yes

Yes

Agent authentication

Yes

Yes

Password authentication

Yes

Yes

SFTP copy to/from hosts

Yes

No

OpenSSH config parsing

Not yet implemented

Not yet implemented

ECDSA keys support

Yes

Yes

ED25519 keys support

Yes

Yes

Certificate authentication

Not supported

Not yet implemented

SCP functionality

Yes

No

Keep-alive functionality

Yes

No

The default client offers the most features, but lacks certain authentication mechanisms like GSS-API and certificate authentication. Both client types are based on C libraries and offer similar levels of performance.

Users that need the authentication mechanisms not supported by the default client can from pssh.clients.ssh import ParallelSSHClient instead of the default client.