tcp

RDP through TCP Proxy

由 不问归期 提交于 2021-02-19 05:13:42
问题 First time in Stackoverflow and I'm hoping someone can help me. I'm looking at a proof of concept to pass RDP traffic through a TCP Proxy/tunnel which will pass through firewalls using HTTPS. The problem has to do with deploying images to machines and so it can't be assumed that the .NET framework will be present, so C++ is being used at the deployment end of a connection. The basic system I have at present is a program which listens for client connections on a port then passes any data to a

RDP through TCP Proxy

由 浪尽此生 提交于 2021-02-19 05:13:29
问题 First time in Stackoverflow and I'm hoping someone can help me. I'm looking at a proof of concept to pass RDP traffic through a TCP Proxy/tunnel which will pass through firewalls using HTTPS. The problem has to do with deploying images to machines and so it can't be assumed that the .NET framework will be present, so C++ is being used at the deployment end of a connection. The basic system I have at present is a program which listens for client connections on a port then passes any data to a

RDP through TCP Proxy

由 人盡茶涼 提交于 2021-02-19 05:13:06
问题 First time in Stackoverflow and I'm hoping someone can help me. I'm looking at a proof of concept to pass RDP traffic through a TCP Proxy/tunnel which will pass through firewalls using HTTPS. The problem has to do with deploying images to machines and so it can't be assumed that the .NET framework will be present, so C++ is being used at the deployment end of a connection. The basic system I have at present is a program which listens for client connections on a port then passes any data to a

四十二,Java 网络编程浅析

由 时光怂恿深爱的人放手 提交于 2021-02-19 04:59:12
1. 网络编程的基本概念 网络编程使物理上不在一起的主机进行互联 , 网络连接过程需要使用网络协议 , 常见的通信协议是 TCP,UDP 协议 . TCP: 属于可靠的连接 , 使用三方握手的方式完成连接的确认 . UDP: 属于不可靠的连接 . 对于网络的开发有两种架构 :C/S 和 B/S. 2. 简单 TCP 程序实现 网络开发包所在的类都在 java.net 开发包中 . 此包中可以使用 ServerSocket,Socket 类完成服务器和客户端的开发 . 开发 TCP 程序 , 首先开发服务器端 , 使用 ServerSocket 进行客户端的连接接收 , 每个客户端在程序上都使用 Socket 对象表示 . Server 代码 : package com.ares.demo.helloserver; import java.io.OutputStream; import java.io.PrintStream; import java.net.ServerSocket; import java.net.Socket; public class HelloServer { public static void main(String[] args) throws Exception { ServerSocket server = new ServerSocket

How to find owner socket of sk_buff in Linux kernel?

由 时光毁灭记忆、已成空白 提交于 2021-02-19 04:41:49
问题 I'm trying to find the owner socket of an sk_buff instance, say, skb . My ultimate goal is to find a specific TCP option and somehow let the user space application to know. I plan to set a socket option when I find the TCP option and let the user space app to call getsockopt() . Therefore I need to know the ownership between sk_buff and sock . I find there is a field in sk_buff: struct sock *sk; However, when I try to retrieve this field at tcp_parse_options in tcp_input.c , I always get skb-

Preventing TCP SYN retry in netcat (for port knocking)

由 混江龙づ霸主 提交于 2021-02-19 03:14:46
问题 I'm trying to write the linux client script for a simple port knocking setup. My server has iptables configured to require a certain sequence of TCP SYN's to certain ports for opening up access. I'm able to successfully knock using telnet or manually invoking netcat (Ctrl-C right after running the command), but failing to build an automated knock script. My attempt at an automated port knocking script consists simply of "nc -w 1 x.x.x.x 1234" commands, which connect to x.x.x.x port 1234 and

Deploying a TCP server to Heroku

由 ≡放荡痞女 提交于 2021-02-18 03:02:04
问题 I have a TCP server coded in node.js. I'd like to put it up on Heroku because it's a free service and I don't need anything more than what their free plan offers. Now, I know very little about the inner workings of Heroku and I'm pretty new to the whole thing so I have a few questions. Firstly, is it even possible to deploy a TCP (non-web) server? I've read that Heroku doesn't like node.js's net because it doesn't support websockets and that I should use socket.io. So I've switched my server

Deploying a TCP server to Heroku

由 流过昼夜 提交于 2021-02-18 03:01:13
问题 I have a TCP server coded in node.js. I'd like to put it up on Heroku because it's a free service and I don't need anything more than what their free plan offers. Now, I know very little about the inner workings of Heroku and I'm pretty new to the whole thing so I have a few questions. Firstly, is it even possible to deploy a TCP (non-web) server? I've read that Heroku doesn't like node.js's net because it doesn't support websockets and that I should use socket.io. So I've switched my server

Why are there multiple TCP connections to the server when I open one website page in my Chrome?

由 不羁岁月 提交于 2021-02-17 05:29:12
问题 The website is developed in SpringBoot and deployed in Linux server. When I open one website page in Chrome, and I open TCP Viewer, I see that there are multiple TCP connections from my computer to the server. They are using totally different ports. And I check the network tab in Chrome DevTool, I see there is Keep-Alive in the requst header. I guess it is using Http 1.1 and long connections. So this confused me. Since it is long connection, all the content should be through one TCP

Java: properly closing sockets for multi threaded servers

由 血红的双手。 提交于 2021-02-16 18:06:33
问题 I'm trying to create a multi threaded server to which multiple clients can connect and can be served. However, I'm not sure on how to properly free up my resources should the need arise. My server runs an input thread (waiting for user inputs) and a procressing thread (handles connections and users). I open up a ServerSocket in the server class and pass it to my processing thread. It looks like this: public class ClientConnector implements Runnable { private ServerSocket serverSocket; public
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