Questions tagged [socat]
The socat tag has no usage guidance.
52
questions
1
vote
0answers
524 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 ...
0
votes
0answers
504 views
Squid IPV4:PORT to IPv6 HTTP PROXY SERVER
Hello friends I'm new to the forum. My purpose is to create ipv6 http proxy server. I couldn't do it when I tried to do it with Squid. Ipv4: will be port ----> Ipv6. After setting the squid.conf file, ...
0
votes
1answer
466 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 ...
0
votes
1answer
297 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 ...
1
vote
1answer
784 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:
...
1
vote
0answers
306 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,...
1
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0answers
421 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 ...
0
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0answers
72 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:...
1
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0answers
46 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 ...
1
vote
0answers
153 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 ...
0
votes
1answer
509 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 ...
0
votes
1answer
63 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 ...
10
votes
2answers
2k 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, ...
0
votes
0answers
591 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:server@example.net:9987
...
0
votes
0answers
642 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 ...
1
vote
0answers
397 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 ...
5
votes
1answer
7k 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-...
1
vote
0answers
710 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 ...
0
votes
1answer
84 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 ...
1
vote
1answer
4k 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 ...
1
vote
2answers
3k 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 ...
2
votes
1answer
4k 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. ...
0
votes
0answers
776 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 ...
0
votes
1answer
1k 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[...
2
votes
0answers
704 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,...
0
votes
0answers
379 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 ...
1
vote
1answer
5k 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,...
4
votes
2answers
4k 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&...
5
votes
1answer
5k 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 ...
1
vote
1answer
1k 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 ...
2
votes
1answer
4k 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:...
2
votes
0answers
502 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 ...
0
votes
1answer
570 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 mylogin@server.com
-R [bind_address:]port:host:hostport
Specifies that the ...
1
vote
1answer
3k 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 ...
6
votes
2answers
17k 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-...
0
votes
2answers
111 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 ...
0
votes
1answer
1k 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 ...
6
votes
1answer
6k 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 ...
7
votes
2answers
5k views
Access D-Bus remotely using socat
Description:
I'd like to access a D-Bus system service from another machine, knowing only machine's IP address and the service to connect to.
What I have recently found is Gabriel (D-Bus over SSH). ...
2
votes
2answers
596 views
Resolving HAProxy BADREQs using socat
I'm trying to figure out why i'm getting BADREQs from time to time, by using "show errors" in socat. The problem is that it only shows the last error. I want to be able to see all of them ( like using ...
5
votes
1answer
29k views
How do i use socat as a proxy server?
I'd like my .NET app to use a proxy which I know how to do except .net doesn't support sock4a/sock5. I know how to setup my app but, how do I setup socat to listen at as a TCP proxy on port 1234 and ...
6
votes
2answers
5k views
Forwarding serial port over network and back to serial char device on remote host (socat?)
I'm working with a linux application which needs to talk with a remotely-located serial (rs-232) device. I've worked out how to use socat on the remote end to send the device's serial data over an IP ...
0
votes
2answers
1k views
Redirect to port based on requested (sub)domain (1 IP, non-HTTP request) [duplicate]
Possible Duplicate:
How to use DNS to redirect domain to specific port on my server
So I've been trying to figure out how to redirect a subdomain to a specific port.
Let's assume the application ...
7
votes
1answer
14k views
Forwarding linux terminal from serial port to TCP with socat
I'm working on embedded ARM platform, Slackware. I'm using G24 Java modem which is configured to forward data between ports /dev/ttyS1 and /dev/ttyACM0, so anything that goes onto any of these ports ...
7
votes
1answer
12k views
socat: Show incoming connections
I am slightly going mad. Even if I call socat like this:
socat -vvvv tcp4-listen:9000 tcp4-listen:9001
it works perfectly, but doesn't inform me about incoming TCP connections! Is there an ...
1
vote
1answer
1k views
Need help in Haproxy socat for cacti
am using the haproxy socat to get the sessions data to plot it in cacti, /var/run/socket-haproxy is owned by www-data (the user which cacti uses) but when I try to execute this command as www-data am ...
23
votes
6answers
53k views
echo server with netcat or socat
I want a UDP echo server to get packets, and reply exactly what it has received. How can I simply do this using netcat or socat? It should stay alive forever and handle packets coming from several ...
4
votes
2answers
7k views
socat connect-connect “proxy” two inbound TCP connections to expose a firewalled service?
I'm struggling a bit trying to see how to use socat (or a similar TCP port redirector) to expose a firewalled service on a PC.
Here's the scenario: I have a server PC which will be acting as a ...
47
votes
3answers
28k views
What's the difference between socat and netcat?
I understand that socat is described as a "more advanced" version of netcat, but what is the actual difference?
Would it be correct to say that everything you can do in netcat you can also do in ...
4
votes
1answer
2k views
Can socat be used to forward an ssh-agent socket into a chroot?
I'm building custom Debian environments on a remote server, which I connect to over SSH. This involves building a debootstrap environment, then chrooting into it to run a custom installer. As part of ...
