Questions tagged [socat]
The socat tag has no usage guidance.
67 questions
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Is it possible to forward ports between two servers using socat and socks5 proxy?
We have server1 and server2
on server2 a socks5 proxy server is installed and listens on TCP port
1080
on server2 an openvpn server is installed that listens on TCP port
1194
server1 is connected ...
- 3
0
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1
answer
155
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Basic auth with socat for plain http traffic
My question is as follows: I need to organize some sort of authorization between http server and client, provided I have no access to their configuration. That needs to be as simple as possible ...
- 25
0
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1
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824
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ERR_SSL_PROTOCOL_ERROR when trying to tunnel IPv4 https traffic to a caddy server runing on an IPv6-only machine via socat
I have a home server that is only provided a public IPv6 adress. It serves a searxng (dockerized) behind a caddy reverse proxy (also dockerized). Access from the outside if the accessing device has ...
- 31
0
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1
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496
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How to measure network throughput with IPerf3 and multiple socat proxies
I have a particular device which acts as a "strange" TLS proxy and I want to measure the throughput of it with IPerf3.
The device under test is "Peter". It has an API to trigger ...
- 101
0
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1
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2k
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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 ...
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1
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4k
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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 ...
- 139
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2
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2k
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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 ...
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190
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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 ...
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1
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539
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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.
...
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0
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1
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2k
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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 ...
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3k
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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 ...
- 113
2
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1
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1k
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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 ...
- 158
0
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1
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607
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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 ...
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444
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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 ...
2
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1
answer
5k
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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&...
- 23
1
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792
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'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 ...
- 223
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0
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2k
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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 ...
- 260
1
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1
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2k
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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 ...
- 113
1
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1
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2k
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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 ...
- 351
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1
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3k
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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:
...
- 2,323
1
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0
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787
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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,...
- 11
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1
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4k
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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 ...
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268
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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:...
- 292
1
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0
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65
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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 ...
- 11
1
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1
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685
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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 ...
- 363
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1
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2k
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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 ...
- 145
0
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1
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211
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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 ...
- 153
11
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2
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3k
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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, ...
- 643
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1k
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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
...
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0
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0
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2k
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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 ...
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0
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1k
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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 ...
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3
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15k
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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-...
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1k
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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 ...
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1
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199
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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 ...
- 111
2
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1
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5k
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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 ...
- 195
2
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2
answers
5k
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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 ...
- 151
2
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1
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6k
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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. ...
- 245
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0
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1k
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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 ...
- 377
1
vote
1
answer
2k
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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[...
- 1,855
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1k
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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,...
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0
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645
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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 ...
user65677
2
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1
answer
9k
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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,...
- 143
4
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3
answers
6k
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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&...
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7
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1
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14k
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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 ...
- 193
1
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1
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2k
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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 ...
- 113
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1
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5k
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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:...
- 141
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0
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720
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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 ...
- 221
1
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1
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1k
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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 ...
- 155
1
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1
answer
6k
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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 ...
- 117
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2
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20k
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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-...
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