Note that this method provides no confidentiality protection, and is not recommended. When 'none' is the agreed on cipher, data is not encrypted. The cipher used for a given session is the cipher highest in the client's order of preference that is also supported by the server. Specifies one or more (comma-separated) encryption algorithms supported by the client. You can use -a to override the configuration file setting.
Authentication agent forwarding is enabled using the ForwardAgent keyword, which is set to 'yes' by default. aĭisables authentication agent forwarding. You can also configure IP address requirements using the AddressFamily keyword. 6įorces connections using IPv6 addresses only. A more secure alternative is to set these options in a configuration file and to protect the configuration file using recommended file permissions (configuration file = 600, directory containing the file = 700).įorces connections using IPv4 addresses only.
Exercise care when specifying sensitive options and switches so that other users cannot easily see that information.
To view the descriptive equivalents, use the -h command line option.Ĭaution: All options specified on the command line (including user names, host names, and other sensitive information) will show up in a process status ( ps) listing. Options are available in both a single-character form (such as -o) and a descriptive equivalent ( -option). Ssh listening_port : host : hostport] listening_port : host : hostport] ].
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