ssh 客戶端未在埠 22 上嘗試公鑰身份驗證

我正在嘗試使用公鑰（DSA）從 Ubuntu 機器（Win 10 上的 VM）SSH 到 linux 伺服器。然而，即使我在 /etc/ssh/ssh_config 中添加了以下行，Ubuntu 上的 OpenSSH 客戶端也不會嘗試將公鑰作為身份驗證方法：

PubkeyAuthentication yes
PubkeyAcceptedKeyTypes +ssh-dss. 

.ssh 目錄的權限設置為 700，id_dsa 文件設置為 600。

這是調試日誌：

The authenticity of host '************' can't be established.
RSA key fingerprint is SHA256:cPAuJmw7PjOgBYDN2TYfFscDVTbcsj0rT6HFJH9SDFI.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '*****************' (RSA) to the list of known hosts.
debug2: bits set: 4095/8192
debug3: send packet: type 21
debug2: set_newkeys: mode 1
debug1: rekey out after 4294967296 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug3: receive packet: type 21
debug1: SSH2_MSG_NEWKEYS received
debug2: set_newkeys: mode 0
debug1: rekey in after 4294967296 blocks
debug1: Will attempt key: .ssh/id_dsa  explicit
debug2: pubkey_prepare: done
debug3: send packet: type 5
debug3: receive packet: type 6
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug3: send packet: type 50
debug3: receive packet: type 51
debug1: Authentications that can continue: gssapi-keyex,gssapi-with-mic
debug3: start over, passed a different list gssapi-keyex,gssapi-with-mic
debug3: preferred gssapi-with-mic,publickey,keyboard-interactive,password
debug3: authmethod_lookup gssapi-with-mic
debug3: remaining preferred: publickey,keyboard-interactive,password
debug3: authmethod_is_enabled gssapi-with-mic
debug1: Next authentication method: gssapi-with-mic
debug1: Unspecified GSS failure.  Minor code may provide more information
No Kerberos credentials available (default cache: FILE:/tmp/krb5cc_1000)


debug1: Unspecified GSS failure.  Minor code may provide more information
No Kerberos credentials available (default cache: FILE:/tmp/krb5cc_1000)


debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
*****************: Permission denied (gssapi-keyex,gssapi-with-mic).

有人可以解釋為什麼 publickey 不在此處的身份驗證方法中：

debug1: Authentications that can continue: gssapi-keyex,gssapi-with-mic

提前致謝，

更新：

我在伺服器上的另一個埠（2222）上啟動了 sshd，然後我能夠連接。所以問題出在埠 22 上，由於某種原因，伺服器不允許公鑰身份驗證。使用埠 22 時，我在日誌中看到了這一點：

debug1: Authentications that can continue: gssapi-keyex,gssapi-with-mic 

這裡伺服器不允許在埠 22 上對我的使用者 ID 進行公鑰身份驗證，但是伺服器允許在埠 2222 上進行公鑰身份驗證：

debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic

伺服器不允許在埠 22 上對我的使用者 ID 進行公鑰身份驗證的原因可能是什麼？

問題與我的網際網路連接有關 - 它不允許在埠 22 上進行公鑰身份驗證。切換到另一個連接後，SSH 公鑰身份驗證工作正常。

引用自：https://unix.stackexchange.com/questions/594404