That's true. Some people complained that this isn't documented enough, so there is a wiki page for sshmuxd explaining what it does. Agent forwarding with sshmu

That's true. Some people complained that this isn't documented enough, so there is a wiki page for sshmuxd explaining what it does. Agent forwarding with sshmux should be safer than the general case, though, as the agent is handled in memory, rather than as a socket. The agent is also not forwarded to the destination.