Forum Discussion
NimbostratusGolang SSH script for F5?
I am testing a small program written in go to SSH into an F5 do some work but still getting a failure to connect . Has anyone else ran into a similar issue? Code is below:
package main
import (
"bytes"
"fmt"
"golang.org/x/crypto/ssh"
"log"
)
func main() {
devices := make([]string, 0)
devices = append(devices,
"xxxxxx:22")
// An SSH client is represented with a ClientConn.
//
// To authenticate with the remote server you must pass at least one
// implementation of AuthMethod via the Auth field in ClientConfig.
config := &ssh.ClientConfig{
User: "xxxxxxx",
Auth: []ssh.AuthMethod{
ssh.Password("xxxxxxxx"),
},
HostKeyCallback: ssh.InsecureIgnoreHostKey(),
}
for _, d := range devices {
client, err := ssh.Dial("tcp", d, config)
if err != nil {
log.Fatal("Failed to dial: ", err)
}
// Each ClientConn can support multiple interactive sessions,
// represented by a Session.
session, err := client.NewSession()
if err != nil {
log.Fatal("Failed to create session: ", err)
}
// Once a Session is created, you can execute a single command on
// the remote side using the Run method.
var b bytes.Buffer
session.Stdout = &b
if err := session.Run("ls -l"); err != nil {
log.Fatal("Failed to run: " + err.Error())
}
fmt.Println(b.String())
err = session.Close()
if err != nil {
fmt.Printf("Failed to close session for %v\n", d)
}
}
}
1 Reply
boyeolowoyeyeHi,
Using inspiration from the golang tmsh library GitHub - yukirii/go-tmsh: Golang wrapper library & CLI tool for BIG-IP Traffic Management Shell (TMSH). You just need to handle the keyboard interactions.
By creating challenge response struct and function.
type keyboardInteractive map[string]string func (ki keyboardInteractive) Challenge(user, instruction string, questions []string, echos []bool) ([]string, error) { var answers []string for _, q := range questions { answers = append(answers, ki[q]) } return answers, nil } answers := keyboardInteractive(map[string]string{ "Password: ": "*****", })Then your config will look like so nowconfig := &ssh.ClientConfig{ User: "******", Auth: []ssh.AuthMethod{ ssh.Password("*******"), ssh.KeyboardInteractive( answers.Challenge, ), }, HostKeyCallback: ssh.InsecureIgnoreHostKey(), }
