使用ganymed-ssh2连接linux报错Cannot negotiate, proposals do not match.

怼烎@ 2023-01-12 10:08 101阅读 0赞

### 文章目录 ###

*   *  问题发现
     *  问题解决

## 问题发现 ##

一个项目中使用了`ganymed-ssh2`作为连接linux机器的工具，在开发环境和大多数测试及线上环境运行良好，但某一次测试环境部署后，对应功能被访问后开始出现如下异常：

Caused by: java.io.IOException: There was a problem while talking to 127.0.0.1:22
    	at ch.ethz.ssh2.Connection.connect(Connection.java:642)
    	at com.ultrapower.driver.resdriver.transport.SSHProtocol.ini(SSHProtocol.java:94)
    	… 2 more
    Caused by: java.io.IOException: Key exchange was not finished, connection is closed.
    	at ch.ethz.ssh2.transport.KexManager.getOrWaitForConnectionInfo(KexManager.java:90)
    	at ch.ethz.ssh2.transport.TransportManager.getConnectionInfo(TransportManager.java:221)
    	at ch.ethz.ssh2.Connection.connect(Connection.java:603)
    	… 3 more
    Caused by: java.io.IOException: Cannot negotiate, proposals do not match.
    	at ch.ethz.ssh2.transport.KexManager.handleMessage(KexManager.java:411)
    	at ch.ethz.ssh2.transport.TransportManager.receiveLoop(TransportManager.java:604)
    	at ch.ethz.ssh2.transport.TransportManager$1.run(TransportManager.java:315)
    	at java.lang.Thread.run(Unknown Source)

## 问题解决 ##

修改/etc/ssh/sshd\_config，在MACs后面添加hmac-sha1-96，或者干脆注释掉MACs