C:\Users\USER\Desktop\ssh_keyses>ssh -v -p 6122 nginx-user@192.168.0.106
OpenSSH_for_Windows_8.6p1, LibreSSL 3.4.3
debug1: Authenticator provider $SSH_SK_PROVIDER did not resolve; disabling
debug1: Connecting to 192.168.0.106 [192.168.0.106] port 6122.
debug1: Connection established.
debug1: identity file C:\\Users\\USER/.ssh/id_rsa type 0
debug1: identity file C:\\Users\\USER/.ssh/id_rsa-cert type -1
debug1: identity file C:\\Users\\USER/.ssh/id_dsa type -1
debug1: identity file C:\\Users\\USER/.ssh/id_dsa-cert type -1
debug1: identity file C:\\Users\\USER/.ssh/id_ecdsa type -1
debug1: identity file C:\\Users\\USER/.ssh/id_ecdsa-cert type -1
debug1: identity file C:\\Users\\USER/.ssh/id_ecdsa_sk type -1
debug1: identity file C:\\Users\\USER/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file C:\\Users\\USER/.ssh/id_ed25519 type -1
debug1: identity file C:\\Users\\USER/.ssh/id_ed25519-cert type -1
debug1: identity file C:\\Users\\USER/.ssh/id_ed25519_sk type -1
debug1: identity file C:\\Users\\USER/.ssh/id_ed25519_sk-cert type -1
debug1: identity file C:\\Users\\USER/.ssh/id_xmss type -1
debug1: identity file C:\\Users\\USER/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_for_Windows_8.6
debug1: Remote protocol version 2.0, remote software version OpenSSH_8.9p1 Ubuntu-3ubuntu0.6
debug1: compat_banner: match: OpenSSH_8.9p1 Ubuntu-3ubuntu0.6 pat OpenSSH* compat 0x04000000
debug1: Authenticating to 192.168.0.106:6122 as 'nginx-user'
debug1: load_hostkeys: fopen C:\\Users\\USER/.ssh/known_hosts2: No such file or directory
debug1: load_hostkeys: fopen __PROGRAMDATA__\\ssh/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen __PROGRAMDATA__\\ssh/ssh_known_hosts2: No such file or directory
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ssh-ed25519
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: SSH2_MSG_KEX_ECDH_REPLY received
debug1: Server host key: ssh-ed25519 SHA256:sLMdLpcorlIwSavaXvaF9MBEh1ikSWrtObFoo6HB11Q
debug1: load_hostkeys: fopen C:\\Users\\USER/.ssh/known_hosts2: No such file or directory
debug1: load_hostkeys: fopen __PROGRAMDATA__\\ssh/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen __PROGRAMDATA__\\ssh/ssh_known_hosts2: No such file or directory
debug1: Host '[192.168.0.106]:6122' is known and matches the ED25519 host key.
debug1: Found key in C:\\Users\\USER/.ssh/known_hosts:1
debug1: rekey out after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey in after 134217728 blocks
debug1: pubkey_prepare: ssh_get_authentication_socket: No such file or directory
debug1: Will attempt key: C:\\Users\\USER/.ssh/id_rsa RSA SHA256:M3fuaCRaMaLX/C9+Ql2PLrrrPZ/+2OHbLydx1H11KlI
debug1: Will attempt key: C:\\Users\\USER/.ssh/id_dsa
debug1: Will attempt key: C:\\Users\\USER/.ssh/id_ecdsa
debug1: Will attempt key: C:\\Users\\USER/.ssh/id_ecdsa_sk
debug1: Will attempt key: C:\\Users\\USER/.ssh/id_ed25519
debug1: Will attempt key: C:\\Users\\USER/.ssh/id_ed25519_sk
debug1: Will attempt key: C:\\Users\\USER/.ssh/id_xmss
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,sk-ssh-ed25519@openssh.com,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ecdsa-sha2-nistp256@openssh.com,webauthn-sk-ecdsa-sha2-nistp256@openssh.com>
debug1: kex_input_ext_info: publickey-hostbound@openssh.com (unrecognised)
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: publickey
debug1: Offering public key: C:\\Users\\USER/.ssh/id_rsa RSA SHA256:M3fuaCRaMaLX/C9+Ql2PLrrrPZ/+2OHbLydx1H11KlI
debug1: Authentications that can continue: publickey,password
debug1: Trying private key: C:\\Users\\USER/.ssh/id_dsa
debug1: Trying private key: C:\\Users\\USER/.ssh/id_ecdsa
debug1: Trying private key: C:\\Users\\USER/.ssh/id_ecdsa_sk
debug1: Trying private key: C:\\Users\\USER/.ssh/id_ed25519
debug1: Trying private key: C:\\Users\\USER/.ssh/id_ed25519_sk
debug1: Trying private key: C:\\Users\\USER/.ssh/id_xmss
debug1: Next authentication method: password
nginx-user@192.168.0.106's password:/usr/share/nginx/html.
Проблема ключей в том, что выдав ключи с обратной связью для всех виртуалок, каким-то образом попав в одну, ты получаешь доступ ко всем.
Какой длины ключ генерировать стоит и в какой кодировке?