henri · November 27, 2023 02:37
diff --git a/socat_cheat_sheet.bash b/socat_cheat_sheet.bash
 # this example sets up a tunnel on the remote system on port 8090 to the system initiating the ssh connection on port 8080
 #
 # starting socat ipv4 tunnel between ports on remote system (forking and lock file enabled with socat)
 # and killing socat with control-c / tunnel close
 #
 # tags : proxy port 

 # most direct approach 
 ssh -t [email protected] -R 8080:127.0.0.1:8080 "socat -L/tmp/socat.lock tcp4-listen:8090,reuseaddr,fork tcp:localhost:8080"

 # more complex
 ssh -t [email protected] -R 8080:127.0.0.1:8080 "(socat -L/tmp/socat.lock tcp4-listen:8090,reuseaddr,fork tcp:localhost:8080 & ) 2> /dev/null ; sleep infinity"

 # more compatible
 ssh -t [email protected] -R 8080:127.0.0.1:8080 "(socat -L/tmp/socat.lock tcp4-listen:8090,reuseaddr,fork tcp:localhost:8080 & ) 2> /dev/null ; trap 'exit 0' SIGINT ; while true ; do sleep 100 ; done"
	# this example sets up a tunnel on the remote system on port 8090 to the system initiating the ssh connection on port 8080
	#
	# starting socat ipv4 tunnel between ports on remote system (forking and lock file enabled with socat)
	# and killing socat with control-c / tunnel close
	#
	# tags : proxy port

	# most direct approach
	ssh -t [email protected] -R 8080:127.0.0.1:8080 "socat -L/tmp/socat.lock tcp4-listen:8090,reuseaddr,fork tcp:localhost:8080"

	# more complex
	ssh -t [email protected] -R 8080:127.0.0.1:8080 "(socat -L/tmp/socat.lock tcp4-listen:8090,reuseaddr,fork tcp:localhost:8080 & ) 2> /dev/null ; sleep infinity"

	# more compatible
	ssh -t [email protected] -R 8080:127.0.0.1:8080 "(socat -L/tmp/socat.lock tcp4-listen:8090,reuseaddr,fork tcp:localhost:8080 & ) 2> /dev/null ; trap 'exit 0' SIGINT ; while true ; do sleep 100 ; done"