Jul 05, 2015
With netcat you can check whether a port is open like this:. nc my.example.com 80 < /dev/null The return value of nc will be success if the TCP port was opened, and failure (typically the return code 1) if it could not make the TCP connection.. Some versions of nc will hang when you try this, because they do not close the sending half of their socket even after receiving the end-of-file from Test if remote TCP port is open from a shell script If bash can open the connection within the timeout, cat will just close it immediately (since it's reading from /dev/null) and exit with a status code of 0 which will propagate through bash and then timeout. If bash gets a connection failure prior to the specified timeout, then bash will exit with an exit code of 1 which timeout will also [SOLVED] All port tests report timed out/ - General Sending outbound packet and waiting for reply probe (timeout=5000) Sending outbound packet and waiting for reply probe (timeout=10000) Sending outbound packet and waiting for reply probe (timeout…
Port Forwarding - Connection Timed Out! : HomeNetworking
Mar 02, 2018
CanYouSeeMe.org
Jul 07, 2015 Trouble with Port Forwarding / connection timed out error Feb 18, 2019