SSH连接很慢

Question

当我这样做时，ssh root@ip_adress我通过 7-8 秒的等待收到密码请求。当我用钥匙做它时也会发生这种情况。

我确定这不是服务器端问题（Centos 或 Debian 立即连接到同一台服务器）。这就是我解决问题的方法：

从 /etc/pam.d/login 和 /etc/pam.d/sshd 中删除了 «session optional pam_motd.so» 在 /etc/pam.d/sshd 中使用DNS no 并且它不起作用

*对不起我的英语不好

当我开始/usr/sbin/sshd -d -d -d然后ssh -v host我得到这个：

debug1: No valid Key exchange context   debug1: Next authentication method: gssapi-with-mic 
**WAIT 3-4 Sec**
debug1: Unspecified GSS failure. Minor code may provide more       information No Kerberos credentials available
**WAIT 2-3 Sec**      
debug1: Unspecified GSS failure. Minor code may provide more       information No Kerberos credentials available W debug1: Unspecified  GSS failure. Minor code may provide more information 
**WAIT 2-3 Sec**   
debug1: Unspecified GSS failure. Minor code may provide more       information No Kerberos credentials available 
**WAIT 2-3 Sec**     
debug1: Next authentication method: publickey 
debug1: Offering RSA       public key: /root/.ssh/id_rsa debug1: Authentications that can       continue: publickey,gssapi-keyex,gssapi-with-mic,password 
debug1:       Trying private key: /root/.ssh/id_dsa debug1: Trying private key:       /root/.ssh/id_ecdsa debug1: Trying private key: /root/.ssh/id_ed25519

Answer 1

问题通过添加GSSAPIAuthentication no到/etc/ssh/ssh_config.