-A Enables forwarding of the authentication agent connection. This can also be specified on a per-
host basis in a configuration file.
Agent forwarding should be enabled with caution. Users with the ability to bypass file permissions
on the remote host (for the agent's UNIX-domain socket) can access the local agent through the
forwarded connection. An attacker cannot obtain key material from the agent, however they can
perform operations on the keys that enable them to authenticate using the identities loaded into
the agent.
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