It has no response when I use command:
telnet taobao.com 80
I use termux.apk on my phone.
Try with
telnet
And after
open taobao.com 80
If cursor is blinking indefinitely, the port is open and listening. Otherwise no.
Related
I was following along with a tutorial on Youtube and everything was going well until I started the service for Apache24. I realized that something was running on port 80. I looked in my command prompt and I realized that there are two things that were with port 80. The first one was Apache24 which is listening to port 80 and the other is chrome which is established on port 80. What should I do?
Try finding out which service hogs port 80 and stop that service. Or, kill the offending process.
netstat -tulpen will show you which process (it's process ID is listed as PID on the very right of the output) uses port 80 (listed underneath Local Address, look for the :80 part). Note the PID.
Do a kill {PID}, so if the PID is, for example, 123, do kill 123. If that does not work, try to be be more ride and issue a kill -9 {PID}.
So something is using port 80, I know this because I am trying to start a process that uses port 80 and it wont start because port 80 is occupied, I dont know what is using port 80, all I know is that it is being used and I need to end whatever process is using it so I can start this other process.
How can I do that? I already checked task manager and it says nothing is using port 80.
If you're familiar with the command prompt, you can type the following to see what is using port 80:
netstat -anb | findstr :80
Then you can use task manager to end the process that is using it (as long as you have permissions).
I am trying to connect to another windows system using telnet as follows:
1.I open cmd.
2.type "telnet"
3.then type telnet "ip-address of remote system" e.g telnet 15.228.40.25.14
Now when I hit enter get error as:
Could not open connection to the host, on port 23:connect failed
So, please suggest how do i resolve it.
Try to make the telnet connection as
telnet 192.168.10.10 3333
without using :
What you did is correct, but the other computer has to be running a telnet server for you to connect to it on port 23.
i using mac os..
i tried
ssh -fNg -L 5985:127.0.0.1:5984 wawansetiawan#192.168.1.249
but there's command like this:
bind: Address already in use
channel_setup_fwd_listener: cannot listen to port: 5985
Could not request local forwarding.
any one can help me??
This is nothing to do with couchdb, it's an ssh question. ssh cannot open port 5985 because there's already something running on your local machine listening on that port. Use a different port or close whatever process has port 5985 open.
An application/Process is already running on your machine with port 5985. Use a different port or close whatever application/process has port 5985 & start the ssh tunnel again.
Try to use different port
ssh -fNg -L 5986:127.0.0.1:5984 wawansetiawan#192.168.1.249
Or You can kill application/process has port 5985.
netstat -nap | grep 5985
kill -9 <pid-of-5985-process>
Start the ssh tunnel again.
ssh -fNg -L 5985:127.0.0.1:5984 wawansetiawan#192.168.1.249
I want to very SMTP connectivity from an AS400 in a VM to a mailserver on port 25
The native telnet command on the as400 does not seem to support a port specification.
Any ideas how to telnet from as400 to port 25 on my mailserver?
I can ping the mailserver from the as400
I can telnet in from other boxes (non as400)
I just tried this on an i5/OS V5R4:
TELNET RMTSYS(hostname) ASCOPRMOD(*VT100) PORT(25)
I also found an IBM manual about telnet support in V5R2 that suggests you can also specify a port in older versions.
Type "TELNET" on the command line, press F4, fill out the remote system name, press F10, page down, page down, locate "Port" field. Change it from "*DFT" to "25". Press Enter.
When done, press F9 to get the corresponding command line invocation.