ssh连接其他Linux机器过慢如何办?


ssh在连接其他Linux机器的时候,有时会出现这样的问题,虽然能够连接上,但连接速度很慢,非常消耗时间,下面小编就给大家介绍下ssh连接Linux机器过慢的解决方法,感兴趣的朋友可以来了解下。

在局域网内,能ping通目标机器,并且时延是微秒级。

用ssh连局域网内其他linux机器,会等待10-30秒才有提示输入密码。严重影响工作效率。

CentOS修改后效果一样

=================================

客户端操作系统版本:

cat /etc/lsb-release

DISTRIB_ID=Ubuntu

DISTRIB_RELEASE=9.10

DISTRIB_CODENAME=karmic

DISTRIB_DESCRIPTION=Ubuntu 9.100

=================================

调试信息:

[root@IBM ~]# ssh -v 10.10.10.100

OpenSSH_3.9p1, OpenSSL 0.9.7a Feb 19 2003

debug1: Reading configuration data /etc/ssh/ssh_config

debug1: Applying options for *

debug1: Connecting to 10.10.10.100 [10.10.10.100] port 22.

debug1: connect to address 10.10.10.100 port 22: Connection refused

ssh: connect to host 10.10.10.100 port 22: Connection refused

----------------[网络上的调试信息]----------------------

ssh -v 192.168.12.16

OpenSSH_5.1p1 Debian-6ubuntu2, OpenSSL 0.9.8g 19 Oct 2007

debug1: Reading configuration data /etc/ssh/ssh_config

debug1: Applying options for *

debug1: Connecting to 192.168.12.16 [192.168.12.16] port 22.

debug1: Connection established.

debug1: identity file /home/zhouhh/.ssh/identity type -1

debug1: identity file /home/zhouhh/.ssh/id_rsa type -1

debug1: identity file /home/zhouhh/.ssh/id_dsa type -1

debug1: Remote protocol version 2.0, remote software version OpenSSH_4.3

debug1: match: OpenSSH_4.3 pat OpenSSH_4*

debug1: Enabling compatibility mode for protocol 2.0

debug1: Local version string SSH-2.0-OpenSSH_5.1p1 Debian-6ubuntu2

debug1: SSH2_MSG_KEXINIT sent

debug1: SSH2_MSG_KEXINIT received

debug1: kex: server-》client aes128-cbc hmac-md5 none

debug1: kex: client-》server aes128-cbc 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 ‘192.168.12.16’ is known and matches the RSA host key.

debug1: Found key in /home/zhouhh/.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-with-mic,password

debug1: Next authentication method: gssapi-with-mic

debug1: An invalid name was supplied

Cannot determine realm for numeric host address

debug1: An invalid name was supplied

Cannot determine realm for numeric host address

debug1: An invalid name was supplied

debug1: Next authentication method: publickey

debug1: Trying private key: /home/zhouhh/.ssh/identity

debug1: Trying private key: /home/zhouhh/.ssh/id_rsa

debug1: Trying private key: /home/zhouhh/.ssh/id_dsa

debug1: Next authentication method: password

password:

debug1: Authentication succeeded (password)。

debug1: channel 0: new [client-session]

debug1: Entering interactive session.

debug1: Sending environment.

debug1: Sending env LANG = zh_CN.UTF-8

Last login: Fri Dec 25 13:35:04 2009 from 192.168.11.146


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