https://stackoverflow.com/questions/21716673/port-forwarding-with-xinetd

------------------------------------------------------------------------------------------------------------------------------------

I want to forward xinetd connection to another local port (say 12345). I based my solution on CentOS/Redhat documentation Chapter 17. TCP Wrappers and xinetd, article 17.4.3.3. In the example the configuration starts a daemon and also redirects the traffic to a host:port. The doco say it should be able to forward to different port on the same system too.

My current goal is to starts a daemon (say testsmpp) at any connection on port 12345 and redirect the stream to a particular port (say 54321). The tricky bit is I don't want the daemon (testsmpp) to read from STDIN, instead it should be able to read from the port where the xinetd is forwarding the traffic to.

I created a service under /etc/service e.g

testsmpp    12345/tcp

And my xinetd configuration for the daemon is

service testsmpp
{
sock_type = stream
protocol = tcp
wait = no
user = root
server = /home/me/bin/testsmpp
redirect = 54321
}

testsmpp listens on port 54321. The problem is when a connection made from outside, xinetd starts the daemon but do not forward the traffic to 54321. Once the server started I can connect directly to 54321 port but the connection made via xinetd (at port 12345) is not forwarded.

Is server and redirect tags are mutually exclusive? I looked at the discussion about xinet forking concurrent server but my motivation are slightly different. I want to listen for incoming connection on another port as the other application will communicate with the daemon on that port too in a distributed computing environment.

Any clues much appreciated.

Port forwarding with xinetd Ask的更多相关文章

  1. How To Set Up Port Forwarding in Linux

    Port forwarding usually used when we want our computer act like a router. Our computer receive the p ...

  2. Port Forwarding in Windows

    转自:http://woshub.com/port-forwarding-in-windows/ Since Windows XP there is a built-in ability in Mic ...

  3. NAT&Port Forwarding&Port Triggering

    NAT     Nat,网络地址转换协议.主要功能是实现局域网内的本地主机与外网通信.     在连接外网时,内部Ip地址需要转换为网关(一般为路由器Ip地址)(端口号也需要相应的转换)     如: ...

  4. 路由器port触发与转发---Port Forwarding & Port Triggering

    What is Port Triggering? If you have not read my explanation of port forwarding do so now. You can f ...

  5. OpenSSH高级功能之端口转发(Port Forwarding)

    在RedHat提供的系统管理员指南中提到OpenSSH不止是一个安全shell,它还具有X11转发(X11 Forwarding)和端口转发(Port Forwarding)的功能.X11功能一般用于 ...

  6. NAT&Port Forwarding&Port Triggering

    NAT     Nat,网络地址转换协议.主要功能是实现局域网内的本地主机与外网通信.     在连接外网时,内部Ip地址须要转换为网关(一般为路由器Ip地址)(port号也须要对应的转换)     ...

  7. How to do SSH Tunneling (Port Forwarding)

    How to do SSH Tunneling (Port Forwarding) In this post we will see how ssh works?, what is SSH tunne ...

  8. 使用Port Forwarding连接k8s集群的pod(redis、mysql等)

    一. 创建Redis的deployment和service 1. 创建Redis deployment redis-master-deployment.yaml  apiVersion: apps/v ...

  9. 端口转发 Port Forwarding (一)

    0x00First 最近发现一些好用的端口转发工具和技巧,计划认真梳理一下 SSH.NC.LCX.EW.FRP 0x01 SSH隧道端口转发 目前利用SSH隧道(SSH tunneling)进行端口转 ...

随机推荐

  1. .net mvc 运行监控和错误捕捉

    方法类 /// <summary> /// 运行监控类 /// </summary> [AttributeUsage(AttributeTargets.Class | Attr ...

  2. js几个逻辑运算符的形象概括

    “&&”是逻辑与操作符,只有“&&”两边值同时满足(同时为真),整个表达式值才为真. b>a && b<c    //“&& ...

  3. schtasks /create 计划任务 中文路径 名字都要加“” 子命令 /tn /tr 前面要空格 否则会出错

    echo off echo. 清空连接 net use * /del /y echo. 连接 net use \\192.168.1.2\人力资源部\考勤\考勤数据-小莫提供 "密码&quo ...

  4. opencv-flag

    http://blog.csdn.net/yiyuehuan/article/details/43701797 在Mat类中定义了这样一个成员变量: /*! includes several bit- ...

  5. Android(java)学习笔记195:ContentProvider使用之添加数据到联系人(掌握)

    1.添加联系人逻辑思路 (1)首先在raw_contacts创建一个新的id (2)在data表里面添加这个id对应的数据 2.下面通过一个案例,说明一下如何添加一条数据到联系人: (1)首先我们关注 ...

  6. Vue打包之后部署到 express 服务器上

    Part.1 安装 express npm install express body-parer --save Part.2 在项目根目录下创建 app.js 文件作为启动 express 服务器代码 ...

  7. Dynamic Web Module版本对应tomcat版本

    MyEclipse2017+JDK 1.8环境下 Dynamic Web Module版本3.1要对应tomcat7.0以上版本,不然部署项目时会出现错误(会出现无法部署项目的情况). Dynamic ...

  8. 一、认识spring框架

    对于spring框架,作为Java开发人员肯定不陌生,大名鼎鼎,名声在外,但是对于spring框架没有进行过系统的学习,从今天开始学习并且记录一下spring框架的比较牛逼的特性. 一.spring简 ...

  9. android-async-http框架库使用基础

    开源项目链接 android-async-http仓库:git clone https://github.com/loopj/android-async-http android-async-http ...

  10. [Luogu] P1156 垃圾陷阱

    题目描述 卡门――农夫约翰极其珍视的一条Holsteins奶牛――已经落了到“垃圾井”中.“垃圾井”是农夫们扔垃圾的地方,它的深度为D(2≤D≤100)英尺. 卡门想把垃圾堆起来,等到堆得与井同样高时 ...