内网连接堡垒机

import paramiko

# 配置堡垒机和目标系统的信息
bastion_host = 'bastion.example.com'
bastion_port = 22
target_host = 'internal.example.com'
target_port = 22
username = 'your_username'
password = 'your_password'

# 创建SSH客户端
ssh_client = paramiko.SSHClient()
ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())

# 连接到堡垒机
ssh_client.connect(bastion_host, port=bastion_port, username=username, password=password)

# 创建一个通道，转发请求到目标系统
transport = ssh_client.get_transport()
channel = transport.open_channel("direct-tcpip", (target_host, target_port), ('localhost', 0))

# 使用通道连接到目标系统
target_ssh_client = paramiko.SSHClient()
target_ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
target_ssh_client.connect(target_host, port=target_port, username=username, password=password, sock=channel)

# 执行命令
stdin, stdout, stderr = target_ssh_client.exec_command('ls -l')
print(stdout.read().decode())

# 关闭连接
target_ssh_client.close()
ssh_client.close()