Questions tagged [socat]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0 votes
0 answers
34 views

iptables as proxy server for IoT devices similar to socat

I am able to forward incoming TCP traffic from IoT devices hitting a port towards another destination server using socat using this command socat TCP-LISTEN:5050,reuseaddr,fork TCP:some-random-host-in-...
ShamsRKhan's user avatar
0 votes
1 answer
282 views

K8s Port Forwarding via kubectl and socat

My k8s pod is connecting to a certain https target. This target is not reachable from my local machine, so I wanted to use kubectl proxy + socat to make that target available on my local machine für ...
dontspeak's user avatar
1 vote
1 answer
1k views

Using socat forwarder over HTTP tunnel (CONNECT) over SSL/TLS

For context, i am using nginx's reverse proxy ngx_http_proxy_module to cache content from an upstream https server. For a specific project, i need nginx to pass through a corporate HTTP proxy (using ...
Florent Thiery's user avatar
0 votes
2 answers
614 views

Fork connections out from a single socat connection

I have an old legacy application I’m trying to get to work with our semi-modern network. This application sends log messages as HTTP requests (one log per request) but does so over a single TCP ...
borog1852's user avatar
0 votes
0 answers
107 views

using putty and socat to run rust server behind firewalls

i want to run a publicly accessible Rust server on a windows machine behind some routers and firewalls. the idea is tunneling the local server ports to a public machine where they are accessable: rust ...
weiss100's user avatar
0 votes
1 answer
188 views

socat is missing commands for haproxy on ubuntu 20.04

I have installed haproxy 2.6.6, socat 1.7.4.1 and have a working load balancer for Exchange. I want to be able to turn off a node for maintenance and have unsuccessfully tried to use socat to do this. ...
02dag's user avatar
  • 1
0 votes
1 answer
731 views

Socat udp client/server with truncated message

Using nodejs I can transmit udp packets with a payload of 50000 chars. But I fail to do so with socat (Linux ubuntu 20.04 on both the client and server). For this test I've been using a vpn connecting ...
creatldd1 creatldd1's user avatar
0 votes
0 answers
1k views

SOCAT command for UDP relay using single port

I am using SOCAT linux command for relaying udp packets. Currently I am simulating using VMware. I used sudo socat -T 10 UDP4-LISTEN:132,reuseaddr,fork UDP4:192.168.11.130:130,bind=192.168.11.131:133 ...
Nafiul Alam Fuji's user avatar
1 vote
1 answer
763 views

What is the iptables equivalent to what socat does?

What is the iptables equivalent to the following? socat TCP-LISTEN:8080 TCP:some-random-host-in-another-network.com:80 Now multiple clients can connect to port 8080 of this middle host to actually ...
Masood Lapeh's user avatar
0 votes
1 answer
385 views

haproxy as a ipv4 to ipv6

i have a small linux server on the internet on which i run socat. socat UDP4-LISTEN:1194,fork UDP6-SENDTO:[****:****:****:****:*** *:****:****:****]:1194 Which I installed as a service. So far it ...
Orko's user avatar
  • 1
0 votes
0 answers
335 views

UDP to Serial port

I look for some solution for connect serial/UART port by UDP connection to another PC. Now I use socat and have connection , but with lost packages, and slow transfer. Can I use netcat for this, maybe ...
Vitaly Rom's user avatar
2 votes
1 answer
3k views

Socat - is it possible?

Is there any way to listen and execute a command ( for every connection ) while port forwarding with socat? A non-working example to make it more clear: socat TCP-LISTEN:8080,reuseaddr, "exec:ls&...
hyogy's user avatar
  • 23
1 vote
0 answers
581 views

'socat' not displaying incoming UDP packets, but Wireshark does

The link is an image of a Wireshark dump of an incoming 60-byte Ethernet frame which contains a UDP packet. The packet payload is the single word 'hello' (sorry, I don't have enough rep to paste the ...
QF0's user avatar
  • 191
1 vote
0 answers
2k views

ping packet loss in wireguard UDP over TCP + UDP over socat tunnels

I have a wireguard tunnel mostly working between two Debian systems, but I had to workaround a ISP firewall (firewall X in the diagram below) that blocks everything inbound and prevents Server B from ...
Lucio Crusca's user avatar
1 vote
1 answer
2k views

How to capture UDP traffic so it can be piped to grep

I'm trying to capture UDP traffic which is being sent as StatsD metrics (on port 8125). The most simple approach I tried is to run nc -ul 8125 which prints the metrics to the terminal...but they are ...
Darragh's user avatar
  • 113
1 vote
1 answer
1k views

Invoke remote program with socat and wait for it to complete

I need to invoke a program x on server foo from client bar. Program x takes some time to load, then reads input from stdin and transmits output to stdout before terminating. I've been trying to use ...
koehn's user avatar
  • 291
2 votes
1 answer
2k views

What is needed to use kubernetes port forwarding through a proxy?

I have a kubernetes cluster that I can reach through an nginx proxy. I can do kubectl get deployments -n kube-system without issue. However, I'm trying to use helm. Helm is throwing an error: ...
cat pants's user avatar
  • 2,273
1 vote
0 answers
638 views

Simple socat UDP6 relay test setup not working

I'd like to use socat as a relay to let two players (both behind firewalls) of my game connect to each other. The game engine uses UDP. Player A will host the game server, player B will join as client,...
Lou's user avatar
  • 11
3 votes
1 answer
2k views

socat tun device very low throughput

I was tinkering around with socat and tried to use socat for creating a TUN device for tunneling between two debian stretch servers. However, throughput seemed very low and comparing with iperf ...
1gd_1bs37coua9dd's user avatar
0 votes
0 answers
180 views

Socat device disappears

On Ubuntu 18.04, I'm using socat to connect to a USB device physically attached to another machine (and exposed via ser2net): sudo socat PTY,link=/dev/zwavevera,group=root,mode=777 TCP:vera.home.lan:...
chris's user avatar
  • 292
1 vote
0 answers
53 views

Encapsulate udp traffic info tcp with on-disk buffering

My ipfix flow receiver supports only udp (can't be replaced), which is not resistant to network failures and then I'm loosing flow data. To improve this I'm thinking about using socat, mkfifo between ...
Supermario's user avatar
1 vote
1 answer
520 views

End of line after socat readbytes limit is reached

We wanted to use socat to make a process available that is line-based: socat SYSTEM:"echo \$\$;sed -u /^%/s/foo/bar/" \ TCP-L:1234,fork,reuseaddr,readbytes=21,bind=localhost This works but only ...
xebeche's user avatar
  • 363
0 votes
1 answer
1k views

how to create a tar file with checksums, but without compression

(note, this is not a duplicate of Creating a tar file with checksums included) I'm familiar with using tar + gzip to create a compressed tar file (tar cf - files | gzip > something.tar.gz), and ...
William's user avatar
  • 145
0 votes
1 answer
169 views

Network shaping local proxy for website testing

I want to make a virtual network interface to TCP-proxy a website and have my browser see it through a slow network connection, in order to debug performance issues in the website itself. So far I ...
dsign's user avatar
  • 153
11 votes
2 answers
3k views

How to set up a persistent TCP gender-changer proxy?

I have a provider (A) that wants to send us data through an incoming TCP connection. Unfortunately the consuming service (B) cannot receive inbound TCP connections. Also it does not have a static IP, ...
dtech's user avatar
  • 633
0 votes
0 answers
1k views

Why is socat not working here? (4in6 for UDP traffic)

I have a TS3 server running on IPv6 only. I wanted to use a dualstack VPS as a 4in6 tunnel, but UDP traffic gets lost with this configuration: socat UDP4-LISTEN:9987,fork UDP6:[email protected]:9987 ...
Seolh's user avatar
  • 1
0 votes
0 answers
1k views

forward all traffic between two ports without iptables

I have read this: Port forwarding on Linux without iptables? I have a vps and I have ran lxc containers on it. I want to redirect all incoming traffic from one outside port to one port of a container ...
Amir Hossein Baghernezad's user avatar
1 vote
0 answers
874 views

socat multiple reads from pipe via SSH

I would like to read input on a named pipe on a remote server from my local machine. I have a script on the remote server that is triggered as a CRON job. So every now and then by script writes ...
Cyberlurk's user avatar
  • 111
7 votes
2 answers
12k views

socat forwarding to multiple addresses

I have a single incoming video stream, and I'd like to set up multiple processes to handle it, each running at its own address. After some reading it seems socat is one way to do this socat TCP4-...
Shukri Adams's user avatar
1 vote
0 answers
955 views

Socat interacting with specific host (reverse shell) from mutiple clients/connections

I have a threaded c/c++ application that gives a pty reverse shell installed on multiple linux clients they all connect back to same server/port now I need to find a reliable method to interact with a ...
Chris Bovier's user avatar
0 votes
1 answer
148 views

Setting up a three way serial port from a single existing port

I currently have a device that has a serial port, and on boot this serial port is bound to ttyS1. There is a process on the device (that I have little control over) that takes control of this port so ...
Tyler's user avatar
  • 111
2 votes
1 answer
5k views

IPv4 to IPv6 proxy/passthrough

I recently had an app rejected from the ios store for crashing during their (now) mandatory IPv6 test (didn't even know they did that). My server (on AWS) wasn't setup for IPv6, but I've fixed that ...
user3249281's user avatar
1 vote
2 answers
5k views

How to tunnel the serial port from a remote machine?

I'm trying to access a remote serial console (a tty port on a remote machine) as if it's on a local machine. This is necessary for a serial-port only application to work on my machine. The remote tty ...
crististm's user avatar
  • 141
2 votes
1 answer
6k views

UDP multicast send/receive: Routing or socat issues?

I'm using 'socat' on Linux Centos 7 to diagnose some problems. Server and clients are all linux centos7, they all have multiple interfaces. Server 10.1.1.1 is on Switch 1, 10.1.1.2 is on Switch 2. ...
surfcode's user avatar
  • 245
0 votes
0 answers
1k views

multiplexing a TCP connection through a dumb shell connection?

I am connecting to a VPN whose gateway is sufficiently misconfigured that basically the only useful thing I can do with it is to ssh to a specific Linux host set up for my usage inside the VPN, and ...
Dan Lenski's user avatar
1 vote
1 answer
2k views

socat CREATE returning Bad file descriptor

I'm trying to build a quick script which listens for one UDP packet, stores it to a file, and exits. socat to the rescue! $ socat UDP-RECVFROM:9999 CREATE:/tmp/results_9999 2016/04/08 11:56:59 socat[...
tudor -Reinstate Monica-'s user avatar
2 votes
0 answers
1k views

socat Resource temporarily unavailable

I am using socat as a bridge between some devices and running socat (a couple hundreds of instances) like this: socat -d -d -d -x -d -lf "/var/log/some_log_file" TCP4-LISTEN:6126,fork,max-children=1,...
Tiago Queiroz's user avatar
0 votes
0 answers
587 views

zabbix_agent + socat hanging with close_wait

I have the following setup: remote devices running active zabbix_agentd (version 2.0) using socat to tunnel through an HTTPS proxy. On the server side: Apache with a proxy service allowing CONNECT to ...
user avatar
1 vote
1 answer
8k views

socat udp packet forwarding with source address

I am trying to use socat (instead of iptables) for UDP port forwarding. I just need to redirect some traffic from UDP port 162 to 33162. I am using something like this: socat udp-listen:162,pktinfo,...
Rade_303's user avatar
  • 133
4 votes
3 answers
6k views

socat TCP file server

I'm trying to set up a simple socat fileserver using TCP to send small files (~100KB). Here are the one-line servers and client for one file: Server: socat -u -d -d OPEN:file.dat TCP-LISTEN:<port&...
jean-loup's user avatar
  • 126
7 votes
1 answer
11k views

Always keep socat alive

I have a socat running nicely, executing my command when a connection comes in with the arguments provided. However, the issue I am having is that the socket is at EOF and the next time a connection ...
Robbie Trencheny's user avatar
1 vote
1 answer
2k views

Why Socat is sending back the input to client?

I am using this command socat -lm -d -d TCP4-LISTEN:5555,reuseaddr,fork EXEC:/bin/myscript,chroot=/root/,su=root,pty,stderr to start a server but when i send the i connect to it through netcat and ...
user2001987's user avatar
2 votes
1 answer
5k views

Simulate tcp disconnect using socat

I am trying to use socat command to simulate a tcp disconnect between my client service and EMS broker process on a remote host. I am running this socat command socat TCP-LISTEN:8123,fork TCP:...
Bhaskar's user avatar
  • 141
2 votes
0 answers
628 views

use socat to provide password to bsign

I have many servers, where I deploy various binaries. For this purpose I use a script that packs them into archives, publishes to the local repository and then ssh-es to the target servers and ...
gluk47's user avatar
  • 220
1 vote
1 answer
979 views

with socat, given port on the remote (server) host is to be forwarded to the given host and port on the local side

Is it possible to use socat to achieve the following, without the need of using ssh? > ssh -N -R 8080:localhost:1080 [email protected] -R [bind_address:]port:host:hostport Specifies that the ...
David Portabella's user avatar
1 vote
1 answer
5k views

Forwarding SNMP ports over SSH

I access my work network through a VPN and have access to every host in there through SSH. Currently I need to access around 3000 hosts via SNMP, but corporate sec policies restrict SNMP access ...
Megaslav's user avatar
  • 117
6 votes
2 answers
19k views

Windows/Linux socat to share a serial device over IP

I have a scenario where I demonstrated to my group @ work how to share a very expensive USB patient simulator plugged into a Raspberry Pi (Debian) using socat. The group wants to be able to have an on-...
wxfield's user avatar
  • 61
0 votes
2 answers
146 views

Dumping the contents of HTTP packets between two VPNs

Here's my setup: Client ---> VPN 1 (my pc, same subnet of the client) --> VPN 2 (external VPN) --> Internet Both VPNs are L2TP/IPSec and the first one is an Ubuntu server with Openswan. I need to ...
StepTNT's user avatar
  • 123
0 votes
1 answer
2k views

Using socat to exec php cli

There are multiple client programs that periodically connect to a port on my server and send a single line of text. When a connection to the port is made I need to start a PHP CLI script that ...
RoyHB's user avatar
  • 163
7 votes
1 answer
8k views

Socat to share a serial link between multiple processes

I have a scenario where multiple processes on the same box want to communicate with a serial device. Process A needs two-way communications with the serial port, and Process B only needs to be able ...
John Walthour's user avatar