在 Linux 服务器中侦听 60000 个端口

问：

我在 Linux 中收听多个端口时遇到问题。我想侦听此服务器中从 20 到 63350 的所有端口。但是，我一次只能侦听 4700 个端口。这是我是如何做到的。

我正在研究网络望远镜的东西（又名暗网，分组望远镜）。我需要确保所有端口都被监听，或者当我尝试 tcpdump 以捕获具有非侦听端口的数据包时，我的服务器将拒绝请求，这会阻止我捕获数据包。RSTSYN

我该如何实现？我应该修改脚本还是修改服务器的设置？或者我可能需要使用 13 台服务器来侦听 60000 个端口。

1. 我修改了 Linux 的文件限制，允许我同时打开更多文件。

ulimit -n 100000

2. 编写脚本以侦听端口。我试过了.但他们最多只能监听 4700 个端口。threadingmultiprocessing

// When this script listens on more than 4700 ports, "too many open files" error pops up.
#!usr/bin/python3

import socket
import threading

host = ''
start_port = 10
end_port = 2010

def port_listen(port):
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    try:
        s.bind((host, port))
        print(f'bound success(port: {port})')
        s.listen(2000)
    except Exception as e:
        print(f'failed to bind(port: {port})\nerror msg: {e}')

    while True:
        conn, addr = s.accept()
        conn.close()

threads = []
for port in range(start_port, end_port):
    thread = threading.Thread(target = port_listen, args=(port,))
    threads.append(thread)
    thread.start()

for thread in threads:
    thread. Join()

// When this script listen more than 1000 ports, the server crashes with the extremely high consume of cpu and memory. Error msg is "can't start new process".
#!usr/bin/python3

import socket
import multiprocessing

host = ''
start_port = 23
end_port = 50

def listen(port):
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    try:
        s.bind((host, port))
        s.listen(100)
    except Exception as e:
        print(f"port {port} failed to bound: {e}")
        return

    while True:
        conn, addr = s.accept()
        print(f"{port} connected!")
        conn.close()

processes = []
for port in range(start_port, end_port + 1):
    process = multiprocessing.Process(target = listen, args = (port,))
    processes.append(process)
    process.start()

for process in processes:
    process. Join()