What this does is a for loop from 1 to 254, $i takes the value of the current iteration so in the first one it will be 1 then 2, 3… and so on, then we tell it to call the ping command with the -c option which means only ping once otherwise it would ping forever after that we pipe the output to grep so we only see the hosts that actually responded and the & at the end send it to the background so it will launch all the pings in parallel. You can enter nc -l -p 2222 to tell system one to listen on port 2222. In essence, it establishes a communications session between two systems. This is because its function is so elegantly simple that it has many uses. With a for loop we can launch a ping for a whole class C in about 3 min in windows and in about 10 sec in Linux.įor i in do (ping -c 1 192.168.1.$i | grep "bytes from" &) done Netcat has often been described as the 'Swiss Army knife' of troubleshooting tools. Well, you can still do it by leveraging the OS built-in tools.
#Socat tutorial install
If you want to learn more, check out the socat man page, section “ADDRESS TYPES” or the online documentation.Įver wanted to do a ping sweep in this new network you just broke in but you don’t want (or can’t, for some reason, AVs etc…) to upload any tools? Or even in your own network but you don’t have time to install nmap for whatever reason? I hope you enjoyed this quick socat tutorial. socat TCP4-LISTEN:5000,fork OPENSSL:localhost:443įinally if you are tunneling a connection between servers using socat you can use the -v option to print all the traffic to stdout. You should also check out the options that you can apply, for example you can use fork to tell socat to listen and handle multiple clients. SSL server socat OPENSSL-LISTEN:443,cert=/cert.pem - SSL client socat - OPENSSL:localhost:443īoth addresses don’t have to use the same protocol, so you can do “ssl server -> non-ssl server”. Openssl req -new -x509 -days 365 -nodes -out cert.pem -keyout cert.key Now we can go beyond netcat with some ssl examples, but first we need to generate a ssl cert for the server. Socat TCP4-LISTEN:700 STDOUT nc -lp localhost 700 -e /bin/bash Socat - TCP4:localhost:80 OR socat STDIN TCP4:localhost:80 nc -lp localhost 700 First I want to show you how you can get the same functionality as with netcat. You have to provide both addresses in order for it to work, now these addresses look like this: protocol:ip:port
#Socat tutorial serial
The device with the current IP is a Serial to Ethernet Converter, as seen here.
#Socat tutorial how to
In this tutorial, I will show you how to install and configure Percona XtraDB Cluster on a CentOS 7 server.
Step 6 - Start the Percona XtraDB Cluster Server. Step 5 - Configure Percona XtraDB Cluster. The first thing you will notice with this tool is that it has a different syntax on what you are used to with netcat or other standard unix tools. sudo socat gopen:/dev/ttyGS0,raw tcp:192.168.1.31:2000 This command redirects all the data from and to the device with IP 192.168.1.31 to the Raspberry PI’s ttyGS0 serial port. Step 3 - Install the Epel Repository and Socat. Socat supports ipv6 and ssl and is available for both windows and linux. Socat is a network utility similar to netcat.
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