我可以通过 SSH 从本地网络的任何地方登录我的 Ubuntu 服务器，但无法从互联网登录。当我尝试登录时，它会要求我的用户名、显示横幅并提示输入密码。但是当我输入密码时，SSH 服务器会挂起并冻结。
我已经使用 Putty、另一台 Linux 服务器中的 SSH 和 Android 版 ConnectBot 对此进行了测试。它们都存在这个问题。auth.log 文件显示连接正在通过，密码已被接受，但客户端什么也没看到，最终断开连接。auth.log 只是说这是正常的断开连接。如果它有帮助，我知道我可以访问在其上运行的 Apache2 网站，因此连接正在发生。我看过几篇关于此问题的其他帖子，但没有一篇能提供任何实质性的帮助。
有什么帮助吗？
ssh -v 的输出是
OpenSSH_6.7p1, OpenSSL 1.0.1j 15 Oct 2014
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Connecting to 50.168.183.239 [50.168.183.239] port 22.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file /home/nitsua_revaew/.ssh/id_rsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/nitsua_revaew/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/nitsua_revaew/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/nitsua_revaew/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/nitsua_revaew/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/nitsua_revaew/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/nitsua_revaew/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/nitsua_revaew/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.7
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1p1 Ubuntu-8
debug1: match: OpenSSH_6.6.1p1 Ubuntu-8 pat OpenSSH_6.6.1* compat 0x04000000
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr [email protected] none
debug1: kex: client->server aes128-ctr [email protected] none
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ECDSA d2:84:4a:6e:f4:a6:85:75:95:28:59:62:a7:d0:93:4a
debug1: Host '50.168.183.239' is known and matches the ECDSA host key.
debug1: Found key in /home/nitsua_revaew/.ssh/known_hosts:1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
__ _ _
\ \ / /__| | ___ ___ _ __ ___ ___
\ \ /\ / / _ \ |/ __/ _ \| '_ ` _ \ / _ \
\ V V / __/ | (_| (_) | | | | | | __/
\_/\_/ \___|_|\___\___/|_| |_| |_|\___|
to
Austin's Server
Enjoy Your Stay
debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: publickey
debug1: Trying private key: /home/nitsua_revaew/.ssh/id_rsa
debug1: Trying private key: /home/nitsua_revaew/.ssh/id_dsa
debug1: Trying private key: /home/nitsua_revaew/.ssh/id_ecdsa
debug1: Trying private key: /home/nitsua_revaew/.ssh/id_ed25519
debug1: Next authentication method: password
[email protected]'s password:
我登录后显示
Authenticated to 50.168.183.239 ([50.168.183.239]:22).
debug1: channel 0: new [client-session]
debug1: Requesting [email protected]
debug1: Entering interactive session.
然后它就冻结了。有什么想法吗？
答案1
听起来好像端口 22 被阻止了。根据您运行服务器的位置，有几种选择。第一种是访问您的路由器并解除端口 22 的阻止。您也可以尝试从端口 80 运行 ssh。
ssh -p 80 myserver.net
顺便问一下，您使用哪种地址访问服务器？如果您使用 IP 地址，请确保您没有使用本地网络 IP（它们通常以 192 开头）。