堡垒机连接服务器需要端口吗

import paramiko

# 堡垒机配置
jump_host = '堡垒机IP'
jump_port = 22
jump_user = '堡垒机用户名'
jump_password = '堡垒机密码'

# 目标服务器配置
target_host = '目标服务器IP'
target_port = 22
target_user = '目标服务器用户名'
target_password = '目标服务器密码'

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

# 连接到堡垒机
ssh.connect(hostname=jump_host, port=jump_port, username=jump_user, password=jump_password)

# 创建一个代理跳板
transport = ssh.get_transport()
dest_addr = (target_host, target_port)
local_addr = ('localhost', 2222)
channel = transport.open_channel("direct-tcpip", dest_addr, local_addr)

# 通过代理跳板连接到目标服务器
ssh_target = paramiko.SSHClient()
ssh_target.set_missing_host_key_policy(paramiko.AutoAddencyPolicy())
ssh_target.connect(hostname='localhost', port=2222, username=target_user, password=target_password)

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

# 关闭连接
ssh_target.close()
channel.close()
ssh.close()