VMware addresses slow speed connections by addressing SSH SECURECRT via address

SSH connection is very slow, the operation after the discovery is normal, but also slow connection. Copyright Notice reproduced please leave the source of the person's address

For example, action:

Ping is very good speed, people mistakenly think that SSH connection is not on, after practice is connected, is a slow.

Analysis results, the main reason is: DNS resolution IP caused, can be used in the following several analytical processing methods

Linux under SSH remote Connection service Slow solution ======= try the perfect solution for yourself: 1, change the/etc/ssh/sshd_config on the SSH server

The configuration in the file is as follows: Usedns no# GSSAPI optionsgssapiauthentication No

2, perform/etc/init.d/sshd Restart restart sshd process so that the above configuration takes effect, the connection is generally not slow.

3, if it is still slow, check the SSH server/etc/hosts file, 127.0.0.1 the corresponding hostname and uname-n results, or the native IP and hostname (uname-n result) into the/etc/hosts.

4, use ssh-v dest_ip to see where is slow, the result is the problem 5,google after someone proposed to change the $HOME/.SSH directory permissions to 700, the file permissions in the directory is also modified to only I can access, but the problem still exists.

5, in accordance with the 5 Chinese law to amend the problem resolved.
In addition, The server can not connect the external network, the/etc/resolv.conf in the nameserver all commented out, the problem can be resolved.

6, using Strace to see, SSH after the verification of key, the authentication gssapi-with-mic, at this time to connect to the DNS server, after this will do other operations.
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Based on the above questions, it is found that

Comment out all lines of IP that are not used in/etc/resolv.conf on the server
The problem

Because this configuration file is set when Linux is installed at the beginning.

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VMware addresses slow speed connections by addressing SSH SECURECRT via address