我公司有伺服器（伺服器A）在一家電信公司的資料中心。伺服器無法從網際網路存取。由於我正在開發一個伺服器應用程序，我需要訪問此伺服器。
我們有第二台伺服器（伺服器B）在同一個資料中心，我可以輕鬆地透過 ssh 進入，我的同事也可以透過 ssh 和 telnet 進入（伺服器A）從第二台伺服器。
我也可以遠端登入（伺服器A）從（伺服器B），但我無法 ssh 進入（伺服器A）從（伺服器B）。
如何透過 ssh 登入可以 telnet 存取的伺服器？
根據要求提供更多資訊：
ssh -v user@domain -p port給我：
ssh -v root@ip_addr -p 1723
OpenSSH_5.3p1, OpenSSL 1.0.1e-fips 11 Feb 2013
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to ip_addr [ip_addr] port 1723.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: identity file /root/.ssh/identity type -1
debug1: identity file /root/.ssh/identity-cert type -1
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3
debug1: match: OpenSSH_5.3 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.3
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5 none
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Host '[ip_addr]:1723' is known and matches the RSA host key.
debug1: Found key in /root/.ssh/known_hosts:1
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Next authentication method: gssapi-keyex
debug1: No valid Key exchange context
debug1: Next authentication method: gssapi-with-mic
debug1: Unspecified GSS failure. Minor code may provide more information
Cannot determine realm for numeric host address
debug1: Unspecified GSS failure. Minor code may provide more information
Cannot determine realm for numeric host address
debug1: Unspecified GSS failure. Minor code may provide more information
debug1: Unspecified GSS failure. Minor code may provide more information
Cannot determine realm for numeric host address
debug1: Next authentication method: publickey
debug1: Trying private key: /root/.ssh/identity
debug1: Trying private key: /root/.ssh/id_rsa
debug1: Trying private key: /root/.ssh/id_dsa
debug1: Trying private key: /root/.ssh/id_ecdsa
debug1: Next authentication method: password
root@ip_addr's password:
debug1: Authentication succeeded (password).
debug1: channel 0: new [client-session]
debug1: Requesting [email protected]
debug1: Entering interactive session.
debug1: Sending environment.
debug1: Sending env LANG = en_US.UTF-8
Last login: Thu Apr 14 20:03:52 2016 from another_ip
[root@localhost ~]#
這讓我登入。
但之後正常ssh user@domain -p還是不行。
答案1
只是必須就這一點道歉。我發現 Putty 通常是邪惡的，它會將介面掛在應該出現密碼提示的位置。很抱歉打擾你們大家，但這個問題已經重複出現了好幾天，如果不是純粹的偶然，我永遠不會猜到。我的解決方案是不斷調整頁面大小並停留在終端上。謝謝