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How to create a simple reverse proxy exposing multiple services under single port

The common problem with microservices is that developing them can be cumbersome if you use AJAX and try to read input from multiuple hosts/ports (due to cross domain requests). I am looking for a ...
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1answer
52 views

Emulate console by sending data on one UDP port, and receive text from another

I'm trying to establish a “console-like” connection with a National Instruments cRIO-FRC. It broadcasts its console output onto 255.255.255.255, UDP port 6666. I can listen to it with: socat ...
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1answer
37 views

socat as argument to ssh: “bash: socat: command not found”

If I ssh into an osx box from a linux box, issuing socat works fine. However, if I give the socat command as argument to ssh it fails. socat was installed in osx using brew. Any idea why this is ...
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1answer
45 views

Screen fails to release pty

On my linux box, when using screen I can open, read and write to a pseudo terminal with screen. After closing it (C-a k y) I can't connect to it again, without restarting socat, which provides the ...
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1answer
68 views

Does an open TCP socket connection consume data when not used?

I have a TCP socket connection established between my server and a modem which has a active GSM module and sim card installed. I create this wirless 3G connection via socat: /usr/bin/socat ...
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1answer
469 views

Impersonate a serial device with socat

I am trying to use socat to impersonate an external serial device. If I do this in one terminal: sudo socat -ddd -ddd PTY,raw,link=/dev/ttyS32,echo=0 READLINE and run this simplified version of my ...
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0answers
588 views

connect to a serial device via TCP socket

My setup is this: serial device ttyUSB0 connected to laptop A software that opens TCP socket to listen and write to, also runs on laptop A (linux) My goal is to pipe data from/to serial device ...
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67 views

How to redirect all traffic from one port to another host and port?

I have a socat running as redirector of traffic to another host, but it always hangs up and freeze. Maybe there is better options to do such a thing? My current command is: socat ...
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1answer
350 views

Connect COM1 port with socat

Is it possible to connect socat to the COM1 device? I am trying to use example from socat man page socat -,raw,echo=0,escape=0x0f /dev/ttyS0,raw,echo=0,crnl and replace device name /dev/ttyS0 with ...
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0answers
140 views

Forward IPsec tunnel from IPv4 endpoint to IPv6 endpoint

I have a new ISP and only have a Dual Stack - lite connection now. That means I can't access my router via IPv4 anymore, since the external IPv4 address is private. I have native IPv6 connectivity. ...
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1answer
731 views

Record multicast stream on multi-homed Linux host

I have what sounds like the simplest possible use case, and yet nothing is satisfactory. I have a multi-homed host and I would like to listen to multicasts on eth1, and shove all the payload (NOT ...
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2answers
508 views

ssh -R then expose the local port over HTTP?

Here's my scenario, I have two machines, A and B. A is behind a VPN, so B can't get to A. I have a web server: machine_a$ curl localhost:8088 "hello from machine_a" I have executed a remote SSH ...
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0answers
375 views

How to check if protocol 41 (6to4) is filtered by ISP without changing the network configuration?

Obvious way (just setting up 6to4 tunnel and pinging) fails because ip command seems to be read-only on my VPS: can't change any networking-related settings. So I try using raw sockets: ...
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1answer
363 views

Specifying startup commands with socat

I'm connecting to a simple server which is offering a basic text-based interface using socat like this socat readline TCP4:localhost:8090 There are some initial commands I have to execute every ...
2
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1answer
407 views

Dynamic proxy using HTTP CONNECT

My university provides internet access through an HTTP proxy which blocks POP, SMTP, and IMAP. To circumvent this, the IT department's "Internet setup guide" suggests to use socat: socat ...
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1answer
2k views

bidirectional socat functionality with nc

This is question is somehow related to How is it called when listening(connecting) two sockets and exchanging data between them? In the test setup I have three terminal windows open I run in Term1: ...
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2answers
6k views

Netcat/socat behavior with piping and UDP?

I guess this is close to linux - Netcat stops listening for UDP traffic - Super User, but I thought I'd better ask anyways As far as versions of netcat I'm using Ubuntu 11.04 and the default netcat ...