ssh_server:ssh

prolog
- ssh_server.pl -- Embedded SSH server

ssh_server(+PortOrOptions) is det

Create an embedded SSH server in the current Prolog process. If the argument is an integer it is interpreted as ssh_server([port(Integer)]). Options:

name(+Atom)

Name the server. Passed as first argument to verify_password/3 to identify multiple servers.

port(+Integer)

Port to listen on. Default is 2020.

bind_address(+Name)

Interface to listen to. Default is localhost. Use * to grant acccess from all network interfaces.

host_key_file(+File)

File name for the host private key. If omitted it searches for etc/ssh below the current directory and user_app_config('etc/ssh') (normally ~/.config/swi-prolog/etc/ssh). On failure it creates, a directory etc/ssh with default host keys and uses these.

auth_methods(+ListOfMethod)

Set allowed authentication methods. ListOfMethod is a list of

password: Allow password login (see verify_password/3)
public_key: Allow key based login (see authorized_keys_file below) The default is derived from the authorized_keys_file option and whether or not verify_password/3 is defined.

authorized_keys_file(+File)

File name for a file holding the public keys for users that are allows to login. Activates auth_methods([public_key]). This file is in OpenSSH format and contains a certificate per line in the format

<type> <base64-key> <comment>

The the file `~/.ssh/authorized_keys` is present, this will be used as default, granting anyone with access to this account to access the server with the same keys. If the option is present with value [] (empty list), no key file is used.