尝试通过SSH连接到远程主机时出错 [英] Error while trying to connect via SSH to remote host
问题描述
我正在尝试连接到远程主机以发出命令，但是在运行代码时出现以下错误消息:
I'm trying to connect to a remote host to issue a command, but I'm getting the following error message while running the code:
ssh:握手失败:ssh:没有通用的密钥交换算法；提供的客户端:[curve25519-sha256@libssh.org ecdh-sha2-nistp256 ecdh-sha2-nistp384 ecdh-sha2-nistp521 diffie-hellman-group14-sha1]，服务器提供:[diffie-hellman-group1-sha1]应急:运行时错误:无效的内存地址或nil指针取消引用[signal SIGSEGV:细分违规代码= 0x1 addr = 0x10 pc = 0x759836]
ssh: handshake failed: ssh: no common algorithm for key exchange; client offered: [curve25519-sha256@libssh.org ecdh-sha2-nistp256 ecdh-sha2-nistp384 ecdh-sha2-nistp521 diffie-hellman-group14-sha1], server offered: [diffie-hellman-group1-sha1]panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x10 pc=0x759836]
这是我正在使用的代码:
Here is the code that I'm using:
func (SSHClient *SSH) Connect(mode int) {
var SSHConfig *ssh.ClientConfig
var auth []ssh.AuthMethod
if mode == CERT_PUBLIC_KEY_FILE {
auth = []ssh.AuthMethod{SSHClient.readPublicKeyFile(SSHClient.Cert)}
}
SSHConfig = &ssh.ClientConfig{
User: SSHClient.User,
Auth: auth,
HostKeyCallback: ssh.InsecureIgnoreHostKey(),
Timeout: time.Second * DEFAULT_TIMEOUT,
}
SSHConfig.Config.Ciphers = append(SSHConfig.Config.Ciphers, "diffie-hellman-group1-sha1")
client, err := ssh.Dial("tcp", fmt.Sprintf("%s:%d", SSHClient.IP, SSHClient.Port), SSHConfig)
if err != nil {
fmt.Printf("ERROR - While trying to Dial to the host %s with error: %s", SSHClient.IP, err.Error())
return
}
session, err := client.NewSession()
if err != nil {
fmt.Printf("ERROR - While trying to create a new session on host %s with error: %s", SSHClient.IP, err.Error())
client.Close()
return
}
SSHClient.session = session
SSHClient.client = client
}
关于如何解决此问题的任何想法?
Any ideas on how to resolve this issue?
谢谢.
推荐答案
问题是....服务器只愿意通过diffie-hellman-group1-sha1进行通话
The problem is.... the server is only willing to talk over diffie-hellman-group1-sha1
并且:
- golang/go问题2903 :ssh:添加diffie-hellman-group1-sha1，已于6天前关闭
- golang/go/issue 17230 :提案:
x/crypto/ssh:支持RFC 4419中的Diffie-Hellman Group Exchange，目前正在实施中.
- golang/go issue 2903: ssh: add diffie-hellman-group1-sha1, has been closed 6 days ago
- golang/go/issue 17230: proposal:
x/crypto/ssh: support Diffie-Hellman Group Exchange from RFC 4419, is being implemented now.
因此，您需要为客户提供 golang.org/x/crypto/ssh 的分支，例如提交39a91b 和提交fe5e4ff 确实增加了对diffie-hellman-的支持group1-sha1.
或安装最新版本的 golang/crypto ，其中包括提交57b3e21 .
So you would need for your client a fork of golang.org/x/crypto/ssh, like bored-engineer/ssh, where commit 39a91b and commit fe5e4ff does add support for diffie-hellman-group1-sha1.
Or install the latest of golang/crypto, which includes commit 57b3e21.
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