我已将以下内容添加到我的 sshd_config 中
Match Group sftponly
ChrootDirectory /srv/sftpfolder
ForceCommand internal-sftp
#AllowTcpForwarding no
PermitTunnel no
X11Forwarding no
我通过创建了“用户”
useradd -g sftponly user
mkdir -p /home/user/.ssh
，然后在用户 ssh 文件夹中创建了 authorized_keys。
的权限/home/user/.ssh/为 700，而 authorized_keys 文件的权限为 600。
但当我尝试时sftp -P 12345 user@ip-address我成功了。
sftp -P 12345 -v user@ip-address
OpenSSH_7.6p1 Ubuntu-4ubuntu0.3, OpenSSL 1.0.2n 7 Dec 2017
debug1: Reading configuration data /home/user/.ssh/config
debug1: /home/user/.ssh/config line 1: Applying options for *
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: auto-mux: Trying existing master
debug1: Control socket "/home/user/.ssh/master-d986de8e7074586561615461cc918c33db0e1d57" does not exist
debug1: Connecting to ip-address [185.104.140.216] port 12345.
debug1: Connection established.
debug1: identity file /home/user/.ssh/id_rsa type 0
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_ed25519-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_7.6p1 Ubuntu-4ubuntu0.3
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.9p1 Debian-10+deb10u1
debug1: match: OpenSSH_7.9p1 Debian-10+deb10u1 pat OpenSSH* compat 0x04000000
debug1: Authenticating to ip-address:12345 as 'user'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: [email protected] MAC: <implicit> compression: none
debug1: kex: client->server cipher: [email protected] MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:/Pd8kuuE858qr7V6RZhdMw8u+3xbxp/CZGVtinPfUmU
debug1: Host '[ip-address]:12345' is known and matches the ECDSA host key.
debug1: Found key in /home/user/.ssh/known_hosts:1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering public key: RSA SHA256:66x60sLHiBKnCaV4hjwStZBp3SJczxVw7WhWouQECWQ /home/user/.ssh/id_rsa
debug1: Authentications that can continue: publickey
debug1: Trying private key: /home/user/.ssh/id_dsa
debug1: Trying private key: /home/user/.ssh/id_ecdsa
debug1: Trying private key: /home/user/.ssh/id_ed25519
debug1: No more authentication methods to try.
user@ip-address: Permission denied (publickey).
Connection closed
我是不是漏掉了什么？使用 root 身份登录一切正常……
答案1
好的，我解决了。事实证明，我已正确设置了 authorized_keys 文件和用户主目录的权限。但是所有者是 root:sftponly